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Showing content from https://www.yiiframework.com/doc/api/2.0/yii-db-oci-querybuilder below:

QueryBuilder, yii\db\oci\QueryBuilder | API Documentation for Yii 2.0

QueryBuilder is the query builder for Oracle databases.

Defined in: yii\base\BaseObject::__call()

Calls the named method which is not a class method.

Do not call this method directly as it is a PHP magic method that will be implicitly called when an unknown method is being invoked.

Source code

                public function __call($name, $params)
{
    throw new UnknownMethodException('Calling unknown method: ' . get_class($this) . "::$name()");
}

public void __construct ( $connection, $config = [] ) $connection yii\db\Connection

The database connection.

$config array

Name-value pairs that will be used to initialize the object properties

Source code

                public function __construct($connection, $config = [])
{
    $this->db = $connection;
    parent::__construct($config);
}

Defined in: yii\base\BaseObject::__get()

Returns the value of an object property.

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing $value = $object->property;.

See also __get().

Source code

                public function __set($name, $value)
{
    $setter = 'set' . $name;
    if (method_exists($this, $setter)) {
        $this->$setter($value);
    } elseif (method_exists($this, 'get' . $name)) {
        throw new InvalidCallException('Setting read-only property: ' . get_class($this) . '::' . $name);
    } else {
        throw new UnknownPropertyException('Setting unknown property: ' . get_class($this) . '::' . $name);
    }
}

Defined in: yii\base\BaseObject::__unset()

Sets an object property to null.

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing unset($object->property).

Note that if the property is not defined, this method will do nothing. If the property is read-only, it will throw an exception.

Source code

                public function __unset($name)
{
    $setter = 'set' . $name;
    if (method_exists($this, $setter)) {
        $this->$setter(null);
    } elseif (method_exists($this, 'get' . $name)) {
        throw new InvalidCallException('Unsetting read-only property: ' . get_class($this) . '::' . $name);
    }
}

public string addCheck ( $name, $table, $expression ) $name string

The name of the check constraint. The name will be properly quoted by the method.

$table string

The table that the check constraint will be added to. The name will be properly quoted by the method.

$expression string

The SQL of the CHECK constraint.

return string

The SQL statement for adding a check constraint to an existing table.

Source code

                public function addCheck($name, $table, $expression)
{
    return 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' ADD CONSTRAINT '
        . $this->db->quoteColumnName($name) . ' CHECK (' . $this->db->quoteSql($expression) . ')';
}

public string addColumn ( $table, $column, $type ) $table string

The table that the new column will be added to. The table name will be properly quoted by the method.

$column string

The name of the new column. The name will be properly quoted by the method.

$type string

The column type. The getColumnType() method will be invoked to convert abstract column type (if any) into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL. For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'.

return string

The SQL statement for adding a new column.

Source code

                public function addColumn($table, $column, $type)
{
    return 'ALTER TABLE ' . $this->db->quoteTableName($table)
        . ' ADD ' . $this->db->quoteColumnName($column) . ' '
        . $this->getColumnType($type);
}

public string addDefaultValue ( $name, $table, $column, $value ) $name string

The name of the default value constraint. The name will be properly quoted by the method.

$table string

The table that the default value constraint will be added to. The name will be properly quoted by the method.

$column string

The name of the column to that the constraint will be added on. The name will be properly quoted by the method.

$value mixed

Default value.

return string

The SQL statement for adding a default value constraint to an existing table.

throws yii\base\NotSupportedException

if this is not supported by the underlying DBMS.

Source code

                public function addDefaultValue($name, $table, $column, $value)
{
    throw new NotSupportedException($this->db->getDriverName() . ' does not support adding default value constraints.');
}

Builds a SQL statement for adding a foreign key constraint to an existing table.

The method will properly quote the table and column names.

public string addForeignKey ( $name, $table, $columns, $refTable, $refColumns, $delete = null, $update = null ) $name string

The name of the foreign key constraint.

$table string

The table that the foreign key constraint will be added to.

$columns string|array

The name of the column to that the constraint will be added on. If there are multiple columns, separate them with commas or use an array to represent them.

$refTable string

The table that the foreign key references to.

$refColumns string|array

The name of the column that the foreign key references to. If there are multiple columns, separate them with commas or use an array to represent them.

$delete string|null

The ON DELETE option. Most DBMS support these options: RESTRICT, CASCADE, NO ACTION, SET DEFAULT, SET NULL

$update string|null

The ON UPDATE option. Most DBMS support these options: RESTRICT, CASCADE, NO ACTION, SET DEFAULT, SET NULL

return string

The SQL statement for adding a foreign key constraint to an existing table.

Source code

                public function addForeignKey($name, $table, $columns, $refTable, $refColumns, $delete = null, $update = null)
{
    $sql = 'ALTER TABLE ' . $this->db->quoteTableName($table)
        . ' ADD CONSTRAINT ' . $this->db->quoteColumnName($name)
        . ' FOREIGN KEY (' . $this->buildColumns($columns) . ')'
        . ' REFERENCES ' . $this->db->quoteTableName($refTable)
        . ' (' . $this->buildColumns($refColumns) . ')';
    if ($delete !== null) {
        $sql .= ' ON DELETE ' . $delete;
    }
    if ($update !== null) {
        throw new Exception('Oracle does not support ON UPDATE clause.');
    }
    return $sql;
}

public string addPrimaryKey ( $name, $table, $columns ) $name string

The name of the primary key constraint.

$table string

The table that the primary key constraint will be added to.

$columns string|array

Comma separated string or array of columns that the primary key will consist of.

return string

The SQL statement for adding a primary key constraint to an existing table.

Source code

                public function addPrimaryKey($name, $table, $columns)
{
    if (is_string($columns)) {
        $columns = preg_split('/\s*,\s*/', $columns, -1, PREG_SPLIT_NO_EMPTY);
    }
    foreach ($columns as $i => $col) {
        $columns[$i] = $this->db->quoteColumnName($col);
    }
    return 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' ADD CONSTRAINT '
        . $this->db->quoteColumnName($name) . ' PRIMARY KEY ('
        . implode(', ', $columns) . ')';
}

public string addUnique ( $name, $table, $columns ) $name string

The name of the unique constraint. The name will be properly quoted by the method.

$table string

The table that the unique constraint will be added to. The name will be properly quoted by the method.

$columns string|array

The name of the column to that the constraint will be added on. If there are multiple columns, separate them with commas. The name will be properly quoted by the method.

return string

The SQL statement for adding an unique constraint to an existing table.

Source code

                public function addUnique($name, $table, $columns)
{
    if (is_string($columns)) {
        $columns = preg_split('/\s*,\s*/', $columns, -1, PREG_SPLIT_NO_EMPTY);
    }
    foreach ($columns as $i => $col) {
        $columns[$i] = $this->db->quoteColumnName($col);
    }
    return 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' ADD CONSTRAINT '
        . $this->db->quoteColumnName($name) . ' UNIQUE ('
        . implode(', ', $columns) . ')';
}

Builds a SQL statement for changing the definition of a column.

public string alterColumn ( $table, $column, $type ) $table string

The table whose column is to be changed. The table name will be properly quoted by the method.

$column string

The name of the column to be changed. The name will be properly quoted by the method.

$type string

The new column type. The getColumnType() method will be invoked to convert abstract column type (if any) into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL. For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'.

return string

The SQL statement for changing the definition of a column.

Source code

                public function alterColumn($table, $column, $type)
{
    $type = $this->getColumnType($type);
    return 'ALTER TABLE ' . $this->db->quoteTableName($table) . ' MODIFY ' . $this->db->quoteColumnName($column) . ' ' . $this->getColumnType($type);
}

Generates a batch INSERT SQL statement.

For example,

$sql = $queryBuilder->batchInsert('user', ['name', 'age'], [
    ['Tom', 30],
    ['Jane', 20],
    ['Linda', 25],
]);

Note that the values in each row must match the corresponding column names.

public string batchInsert ( $table, $columns, $rows, &$params = [] ) $table string

The table that new rows will be inserted into.

$columns array

The column names

$rows array|Generator

The rows to be batch inserted into the table

$params return string

The batch INSERT SQL statement

Source code

                public function batchInsert($table, $columns, $rows, &$params = [])
{
    if (empty($rows)) {
        return '';
    }
    $schema = $this->db->getSchema();
    if (($tableSchema = $schema->getTableSchema($table)) !== null) {
        $columnSchemas = $tableSchema->columns;
    } else {
        $columnSchemas = [];
    }
    $values = [];
    foreach ($rows as $row) {
        $vs = [];
        foreach ($row as $i => $value) {
            if (isset($columns[$i], $columnSchemas[$columns[$i]])) {
                $value = $columnSchemas[$columns[$i]]->dbTypecast($value);
            }
            if (is_string($value)) {
                $value = $schema->quoteValue($value);
            } elseif (is_float($value)) {
                
                $value = StringHelper::floatToString($value);
            } elseif ($value === false) {
                $value = 0;
            } elseif ($value === null) {
                $value = 'NULL';
            } elseif ($value instanceof ExpressionInterface) {
                $value = $this->buildExpression($value, $params);
            }
            $vs[] = $value;
        }
        $values[] = '(' . implode(', ', $vs) . ')';
    }
    if (empty($values)) {
        return '';
    }
    foreach ($columns as $i => $name) {
        $columns[$i] = $schema->quoteColumnName($name);
    }
    $tableAndColumns = ' INTO ' . $schema->quoteTableName($table)
    . ' (' . implode(', ', $columns) . ') VALUES ';
    return 'INSERT ALL ' . $tableAndColumns . implode($tableAndColumns, $values) . ' SELECT 1 FROM SYS.DUAL';
}

Source code

                public function bindParam($value, &$params)
{
    $phName = self::PARAM_PREFIX . count($params);
    $params[$phName] = $value;
    return $phName;
}

public array build ( $query, $params = [] ) $query yii\db\Query

The yii\db\Query object from which the SQL statement will be generated.

$params array

The parameters to be bound to the generated SQL statement. These parameters will be included in the result with the additional parameters generated during the query building process.

return array

The generated SQL statement (the first array element) and the corresponding parameters to be bound to the SQL statement (the second array element). The parameters returned include those provided in $params.

Source code

                public function build($query, $params = [])
{
    $query = $query->prepare($this);
    $params = empty($params) ? $query->params : array_merge($params, $query->params);
    $clauses = [
        $this->buildSelect($query->select, $params, $query->distinct, $query->selectOption),
        $this->buildFrom($query->from, $params),
        $this->buildJoin($query->join, $params),
        $this->buildWhere($query->where, $params),
        $this->buildGroupBy($query->groupBy),
        $this->buildHaving($query->having, $params),
    ];
    $sql = implode($this->separator, array_filter($clauses));
    $sql = $this->buildOrderByAndLimit($sql, $query->orderBy, $query->limit, $query->offset);
    if (!empty($query->orderBy)) {
        foreach ($query->orderBy as $expression) {
            if ($expression instanceof ExpressionInterface) {
                $this->buildExpression($expression, $params);
            }
        }
    }
    if (!empty($query->groupBy)) {
        foreach ($query->groupBy as $expression) {
            if ($expression instanceof ExpressionInterface) {
                $this->buildExpression($expression, $params);
            }
        }
    }
    $union = $this->buildUnion($query->union, $params);
    if ($union !== '') {
        $sql = "($sql){$this->separator}$union";
    }
    $with = $this->buildWithQueries($query->withQueries, $params);
    if ($with !== '') {
        $sql = "$with{$this->separator}$sql";
    }
    return [$sql, $params];
}

Deprecated since 2.0.14. Use buildCondition() instead.

public string buildAndCondition ( $operator, $operands, &$params ) $operator string

The operator to use for connecting the given operands

$operands array

The SQL expressions to connect.

$params array

The binding parameters to be populated

return string

The generated SQL expression

Source code

                public function buildAndCondition($operator, $operands, &$params)
{
    array_unshift($operands, $operator);
    return $this->buildCondition($operands, $params);
}

Deprecated since 2.0.14. Use buildCondition() instead.

public string buildBetweenCondition ( $operator, $operands, &$params ) $operator string

The operator to use (e.g. BETWEEN or NOT BETWEEN)

$operands array

The first operand is the column name. The second and third operands describe the interval that column value should be in.

$params array

The binding parameters to be populated

return string

The generated SQL expression

throws yii\base\InvalidArgumentException

if wrong number of operands have been given.

Source code

                public function buildBetweenCondition($operator, $operands, &$params)
{
    array_unshift($operands, $operator);
    return $this->buildCondition($operands, $params);
}

Source code

                public function buildColumns($columns)
{
    if (!is_array($columns)) {
        if (strpos($columns, '(') !== false) {
            return $columns;
        }
        $rawColumns = $columns;
        $columns = preg_split('/\s*,\s*/', $columns, -1, PREG_SPLIT_NO_EMPTY);
        if ($columns === false) {
            throw new InvalidArgumentException("$rawColumns is not valid columns.");
        }
    }
    foreach ($columns as $i => $column) {
        if ($column instanceof ExpressionInterface) {
            $columns[$i] = $this->buildExpression($column);
        } elseif (strpos($column, '(') === false) {
            $columns[$i] = $this->db->quoteColumnName($column);
        }
    }
    return implode(', ', $columns);
}

Source code

                public function buildCondition($condition, &$params)
{
    if (is_array($condition)) {
        if (empty($condition)) {
            return '';
        }
        $condition = $this->createConditionFromArray($condition);
    }
    if ($condition instanceof ExpressionInterface) {
        return $this->buildExpression($condition, $params);
    }
    return (string)$condition;
}

Deprecated since 2.0.14. Use buildCondition() instead.

Source code

                public function buildExistsCondition($operator, $operands, &$params)
{
    array_unshift($operands, $operator);
    return $this->buildCondition($operands, $params);
}

Source code

                public function buildExpression(ExpressionInterface $expression, &$params = [])
{
    $builder = $this->getExpressionBuilder($expression);
    return $builder->build($expression, $params);
}

Source code

                public function buildFrom($tables, &$params)
{
    if (empty($tables)) {
        return '';
    }
    $tables = $this->quoteTableNames($tables, $params);
    return 'FROM ' . implode(', ', $tables);
}

Source code

                public function buildGroupBy($columns)
{
    if (empty($columns)) {
        return '';
    }
    foreach ($columns as $i => $column) {
        if ($column instanceof ExpressionInterface) {
            $columns[$i] = $this->buildExpression($column);
        } elseif (strpos($column, '(') === false) {
            $columns[$i] = $this->db->quoteColumnName($column);
        }
    }
    return 'GROUP BY ' . implode(', ', $columns);
}

Deprecated since 2.0.14. Use buildCondition() instead.

Source code

                public function buildHashCondition($condition, &$params)
{
    return $this->buildCondition(new HashCondition($condition), $params);
}

Source code

                public function buildHaving($condition, &$params)
{
    $having = $this->buildCondition($condition, $params);
    return $having === '' ? '' : 'HAVING ' . $having;
}

Deprecated since 2.0.14. Use buildCondition() instead.

public string buildInCondition ( $operator, $operands, &$params ) $operator string

The operator to use (e.g. IN or NOT IN)

$operands array

The first operand is the column name. If it is an array a composite IN condition will be generated. The second operand is an array of values that column value should be among. If it is an empty array the generated expression will be a false value if operator is IN and empty if operator is NOT IN.

$params array

The binding parameters to be populated

return string

The generated SQL expression

throws yii\db\Exception

if wrong number of operands have been given.

Source code

                public function buildInCondition($operator, $operands, &$params)
{
    array_unshift($operands, $operator);
    return $this->buildCondition($operands, $params);
}

Source code

                public function buildJoin($joins, &$params)
{
    if (empty($joins)) {
        return '';
    }
    foreach ($joins as $i => $join) {
        if (!is_array($join) || !isset($join[0], $join[1])) {
            throw new Exception('A join clause must be specified as an array of join type, join table, and optionally join condition.');
        }
        
        list($joinType, $table) = $join;
        $tables = $this->quoteTableNames((array)$table, $params);
        $table = reset($tables);
        $joins[$i] = "$joinType $table";
        if (isset($join[2])) {
            $condition = $this->buildCondition($join[2], $params);
            if ($condition !== '') {
                $joins[$i] .= ' ON ' . $condition;
            }
        }
    }
    return implode($this->separator, $joins);
}

Deprecated since 2.0.14. Use buildCondition() instead.

public string buildLikeCondition ( $operator, $operands, &$params ) $operator string

The operator to use (e.g. LIKE, NOT LIKE, OR LIKE or OR NOT LIKE)

$operands array

An array of two or three operands

The first operand is the column name.
The second operand is a single value or an array of values that column value should be compared with. If it is an empty array the generated expression will be a false value if operator is LIKE or OR LIKE, and empty if operator is NOT LIKE or OR NOT LIKE.
An optional third operand can also be provided to specify how to escape special characters in the value(s). The operand should be an array of mappings from the special characters to their escaped counterparts. If this operand is not provided, a default escape mapping will be used. You may use false or an empty array to indicate the values are already escaped and no escape should be applied. Note that when using an escape mapping (or the third operand is not provided), the values will be automatically enclosed within a pair of percentage characters.

$params array

The binding parameters to be populated

return string

The generated SQL expression

throws yii\base\InvalidArgumentException

if wrong number of operands have been given.

Source code

                public function buildLikeCondition($operator, $operands, &$params)
{
    array_unshift($operands, $operator);
    return $this->buildCondition($operands, $params);
}

Source code

                public function buildLimit($limit, $offset)
{
    $sql = '';
    if ($this->hasLimit($limit)) {
        $sql = 'LIMIT ' . $limit;
    }
    if ($this->hasOffset($offset)) {
        $sql .= ' OFFSET ' . $offset;
    }
    return ltrim($sql);
}

Deprecated since 2.0.14. Use buildCondition() instead.

Source code

                public function buildNotCondition($operator, $operands, &$params)
{
    array_unshift($operands, $operator);
    return $this->buildCondition($operands, $params);
}

Source code

                public function buildOrderBy($columns)
{
    if (empty($columns)) {
        return '';
    }
    $orders = [];
    foreach ($columns as $name => $direction) {
        if ($direction instanceof ExpressionInterface) {
            $orders[] = $this->buildExpression($direction);
        } else {
            $orders[] = $this->db->quoteColumnName($name) . ($direction === SORT_DESC ? ' DESC' : '');
        }
    }
    return 'ORDER BY ' . implode(', ', $orders);
}

Builds the ORDER BY and LIMIT/OFFSET clauses and appends them to the given SQL.

Source code

                public function buildOrderByAndLimit($sql, $orderBy, $limit, $offset)
{
    $orderBy = $this->buildOrderBy($orderBy);
    if ($orderBy !== '') {
        $sql .= $this->separator . $orderBy;
    }
    $filters = [];
    if ($this->hasOffset($offset)) {
        $filters[] = 'rowNumId > ' . $offset;
    }
    if ($this->hasLimit($limit)) {
        $filters[] = 'rownum <= ' . $limit;
    }
    if (empty($filters)) {
        return $sql;
    }
    $filter = implode(' AND ', $filters);
    return <<<EOD
 USER_SQL AS ($sql),
PAGINATION AS (SELECT USER_SQL.*, rownum as rowNumId FROM USER_SQL)
CT *
 PAGINATION
E $filter

}

Source code

                public function buildSelect($columns, &$params, $distinct = false, $selectOption = null)
{
    $select = $distinct ? 'SELECT DISTINCT' : 'SELECT';
    if ($selectOption !== null) {
        $select .= ' ' . $selectOption;
    }
    if (empty($columns)) {
        return $select . ' *';
    }
    foreach ($columns as $i => $column) {
        if ($column instanceof ExpressionInterface) {
            if (is_int($i)) {
                $columns[$i] = $this->buildExpression($column, $params);
            } else {
                $columns[$i] = $this->buildExpression($column, $params) . ' AS ' . $this->db->quoteColumnName($i);
            }
        } elseif ($column instanceof Query) {
            list($sql, $params) = $this->build($column, $params);
            $columns[$i] = "($sql) AS " . $this->db->quoteColumnName($i);
        } elseif (is_string($i) && $i !== $column) {
            if (strpos($column, '(') === false) {
                $column = $this->db->quoteColumnName($column);
            }
            $columns[$i] = "$column AS " . $this->db->quoteColumnName($i);
        } elseif (strpos($column, '(') === false) {
            if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)([\w\-_\.]+)$/', $column, $matches)) {
                $columns[$i] = $this->db->quoteColumnName($matches[1]) . ' AS ' . $this->db->quoteColumnName($matches[2]);
            } else {
                $columns[$i] = $this->db->quoteColumnName($column);
            }
        }
    }
    return $select . ' ' . implode(', ', $columns);
}

Deprecated since 2.0.14. Use buildCondition() instead.

Source code

                public function buildSimpleCondition($operator, $operands, &$params)
{
    array_unshift($operands, $operator);
    return $this->buildCondition($operands, $params);
}

Source code

                public function buildUnion($unions, &$params)
{
    if (empty($unions)) {
        return '';
    }
    $result = '';
    foreach ($unions as $i => $union) {
        $query = $union['query'];
        if ($query instanceof Query) {
            list($unions[$i]['query'], $params) = $this->build($query, $params);
        }
        $result .= 'UNION ' . ($union['all'] ? 'ALL ' : '') . '( ' . $unions[$i]['query'] . ' ) ';
    }
    return trim($result);
}

Source code

                public function buildWhere($condition, &$params)
{
    $where = $this->buildCondition($condition, $params);
    return $where === '' ? '' : 'WHERE ' . $where;
}

public string buildWithQueries ( $withs, &$params ) $withs array

Of configurations for each WITH query

$params array

The binding parameters to be populated

return string

Compiled WITH prefix of query including nested queries

Source code

                public function buildWithQueries($withs, &$params)
{
    if (empty($withs)) {
        return '';
    }
    $recursive = false;
    $result = [];
    foreach ($withs as $i => $with) {
        if ($with['recursive']) {
            $recursive = true;
        }
        $query = $with['query'];
        if ($query instanceof Query) {
            list($with['query'], $params) = $this->build($query, $params);
        }
        $result[] = $with['alias'] . ' AS (' . $with['query'] . ')';
    }
    return 'WITH ' . ($recursive ? 'RECURSIVE ' : '') . implode(', ', $result);
}

Defined in: yii\base\BaseObject::canGetProperty()

Returns a value indicating whether a property can be read.

A property is readable if:

the class has a getter method associated with the specified name (in this case, property name is case-insensitive);
the class has a member variable with the specified name (when $checkVars is true);

See also canGetProperty().

public boolean canSetProperty ( $name, $checkVars = true ) $name string

The property name

$checkVars boolean

Whether to treat member variables as properties

return boolean

Whether the property can be written

Source code

                public function canSetProperty($name, $checkVars = true)
{
    return method_exists($this, 'set' . $name) || $checkVars && property_exists($this, $name);
}

public string checkIntegrity ( $check = true, $schema = '', $table = '' ) $check boolean

Whether to turn on or off the integrity check.

$schema string

The schema of the tables. Defaults to empty string, meaning the current or default schema.

$table string

The table name. Defaults to empty string, meaning that no table will be changed.

return string

The SQL statement for checking integrity

throws yii\base\NotSupportedException

if this is not supported by the underlying DBMS

Source code

                public function checkIntegrity($check = true, $schema = '', $table = '')
{
    throw new NotSupportedException($this->db->getDriverName() . ' does not support enabling/disabling integrity check.');
}

Deprecated since 2.0.14. On PHP >=5.5, use ::class instead.

Source code

                public static function className()
{
    return get_called_class();
}

Source code

                public function createConditionFromArray($condition)
{
    if (isset($condition[0])) { 
        $operator = strtoupper(array_shift($condition));
        if (isset($this->conditionClasses[$operator])) {
            $className = $this->conditionClasses[$operator];
        } else {
            $className = 'yii\db\conditions\SimpleCondition';
        }
        
        return $className::fromArrayDefinition($operator, $condition);
    }
    
    return new HashCondition($condition);
}

public string createIndex ( $name, $table, $columns, $unique = false ) $name string

The name of the index. The name will be properly quoted by the method.

$table string

The table that the new index will be created for. The table name will be properly quoted by the method.

$columns string|array

The column(s) that should be included in the index. If there are multiple columns, separate them with commas or use an array to represent them. Each column name will be properly quoted by the method, unless a parenthesis is found in the name.

$unique boolean

Whether to add UNIQUE constraint on the created index.

return string

The SQL statement for creating a new index.

Source code

                public function createIndex($name, $table, $columns, $unique = false)
{
    return ($unique ? 'CREATE UNIQUE INDEX ' : 'CREATE INDEX ')
        . $this->db->quoteTableName($name) . ' ON '
        . $this->db->quoteTableName($table)
        . ' (' . $this->buildColumns($columns) . ')';
}

Defined in: yii\db\QueryBuilder::createTable()

Builds a SQL statement for creating a new DB table.

The columns in the new table should be specified as name-definition pairs (e.g. 'name' => 'string'), where name stands for a column name which will be properly quoted by the method, and definition stands for the column type which must contain an abstract DB type. The getColumnType() method will be invoked to convert any abstract type into a physical one.

If a column is specified with definition only (e.g. 'PRIMARY KEY (name, type)'), it will be directly inserted into the generated SQL.

For example,

$sql = $queryBuilder->createTable('user', [
 'id' => 'pk',
 'name' => 'string',
 'age' => 'integer',
 'column_name double precision null default null', 
]);

public string createTable ( $table, $columns, $options = null ) $table string

The name of the table to be created. The name will be properly quoted by the method.

$columns array

The columns (name => definition) in the new table.

$options string|null

Additional SQL fragment that will be appended to the generated SQL.

return string

The SQL statement for creating a new DB table.

Source code

                public function createTable($table, $columns, $options = null)
{
    $cols = [];
    foreach ($columns as $name => $type) {
        if (is_string($name)) {
            $cols[] = "\t" . $this->db->quoteColumnName($name) . ' ' . $this->getColumnType($type);
        } else {
            $cols[] = "\t" . $type;
        }
    }
    $sql = 'CREATE TABLE ' . $this->db->quoteTableName($table) . " (\n" . implode(",\n", $cols) . "\n)";
    return $options === null ? $sql : $sql . ' ' . $options;
}

Source code

                public function createView($viewName, $subQuery)
{
    if ($subQuery instanceof Query) {
        list($rawQuery, $params) = $this->build($subQuery);
        array_walk(
            $params,
            function (&$param) {
                $param = $this->db->quoteValue($param);
            }
        );
        $subQuery = strtr($rawQuery, $params);
    }
    return 'CREATE VIEW ' . $this->db->quoteTableName($viewName) . ' AS ' . $subQuery;
}

Source code

                protected function defaultConditionClasses()
{
    return [
        'NOT' => 'yii\db\conditions\NotCondition',
        'AND' => 'yii\db\conditions\AndCondition',
        'OR' => 'yii\db\conditions\OrCondition',
        'BETWEEN' => 'yii\db\conditions\BetweenCondition',
        'NOT BETWEEN' => 'yii\db\conditions\BetweenCondition',
        'IN' => 'yii\db\conditions\InCondition',
        'NOT IN' => 'yii\db\conditions\InCondition',
        'LIKE' => 'yii\db\conditions\LikeCondition',
        'NOT LIKE' => 'yii\db\conditions\LikeCondition',
        'OR LIKE' => 'yii\db\conditions\LikeCondition',
        'OR NOT LIKE' => 'yii\db\conditions\LikeCondition',
        'EXISTS' => 'yii\db\conditions\ExistsCondition',
        'NOT EXISTS' => 'yii\db\conditions\ExistsCondition',
    ];
}

Contains array of default expression builders. Extend this method and override it, if you want to change default expression builders for this query builder. See $expressionBuilders docs for details.

Source code

                protected function defaultExpressionBuilders()
{
    return array_merge(parent::defaultExpressionBuilders(), [
        'yii\db\conditions\InCondition' => 'yii\db\oci\conditions\InConditionBuilder',
        'yii\db\conditions\LikeCondition' => 'yii\db\oci\conditions\LikeConditionBuilder',
    ]);
}

Defined in: yii\db\QueryBuilder::delete()

Creates a DELETE SQL statement.

For example,

$sql = $queryBuilder->delete('user', 'status = 0');

The method will properly escape the table and column names.

public string delete ( $table, $condition, &$params ) $table string

The table where the data will be deleted from.

$condition array|string

The condition that will be put in the WHERE part. Please refer to yii\db\Query::where() on how to specify condition.

$params array

The binding parameters that will be modified by this method so that they can be bound to the DB command later.

return string

The DELETE SQL

Source code

                public function delete($table, $condition, &$params)
{
    $sql = 'DELETE FROM ' . $this->db->quoteTableName($table);
    $where = $this->buildWhere($condition, $params);
    return $where === '' ? $sql : $sql . ' ' . $where;
}

public string dropCheck ( $name, $table ) $name string

The name of the check constraint to be dropped. The name will be properly quoted by the method.

$table string

The table whose check constraint is to be dropped. The name will be properly quoted by the method.

return string

The SQL statement for dropping a check constraint.

Source code

                public function dropCheck($name, $table)
{
    return 'ALTER TABLE ' . $this->db->quoteTableName($table)
        . ' DROP CONSTRAINT ' . $this->db->quoteColumnName($name);
}

public string dropColumn ( $table, $column ) $table string

The table whose column is to be dropped. The name will be properly quoted by the method.

$column string

The name of the column to be dropped. The name will be properly quoted by the method.

return string

The SQL statement for dropping a DB column.

Source code

                public function dropColumn($table, $column)
{
    return 'ALTER TABLE ' . $this->db->quoteTableName($table)
        . ' DROP COLUMN ' . $this->db->quoteColumnName($column);
}

public string dropDefaultValue ( $name, $table ) $name string

The name of the default value constraint to be dropped. The name will be properly quoted by the method.

$table string

The table whose default value constraint is to be dropped. The name will be properly quoted by the method.

return string

The SQL statement for dropping a default value constraint.

throws yii\base\NotSupportedException

if this is not supported by the underlying DBMS.

Source code

                public function dropDefaultValue($name, $table)
{
    throw new NotSupportedException($this->db->getDriverName() . ' does not support dropping default value constraints.');
}

public string dropForeignKey ( $name, $table ) $name string

The name of the foreign key constraint to be dropped. The name will be properly quoted by the method.

$table string

The table whose foreign is to be dropped. The name will be properly quoted by the method.

return string

The SQL statement for dropping a foreign key constraint.

Source code

                public function dropForeignKey($name, $table)
{
    return 'ALTER TABLE ' . $this->db->quoteTableName($table)
        . ' DROP CONSTRAINT ' . $this->db->quoteColumnName($name);
}

Builds a SQL statement for dropping an index.

public string dropIndex ( $name, $table ) $name string

The name of the index to be dropped. The name will be properly quoted by the method.

$table string

The table whose index is to be dropped. The name will be properly quoted by the method.

return string

The SQL statement for dropping an index.

Source code

                public function dropIndex($name, $table)
{
    return 'DROP INDEX ' . $this->db->quoteTableName($name);
}

public string dropPrimaryKey ( $name, $table ) $name string

The name of the primary key constraint to be removed.

$table string

The table that the primary key constraint will be removed from.

return string

The SQL statement for removing a primary key constraint from an existing table.

Source code

                public function dropPrimaryKey($name, $table)
{
    return 'ALTER TABLE ' . $this->db->quoteTableName($table)
        . ' DROP CONSTRAINT ' . $this->db->quoteColumnName($name);
}

public string dropTable ( $table ) $table string

The table to be dropped. The name will be properly quoted by the method.

return string

The SQL statement for dropping a DB table.

Source code

                public function dropTable($table)
{
    return 'DROP TABLE ' . $this->db->quoteTableName($table);
}

public string dropUnique ( $name, $table ) $name string

The name of the unique constraint to be dropped. The name will be properly quoted by the method.

$table string

The table whose unique constraint is to be dropped. The name will be properly quoted by the method.

return string

The SQL statement for dropping an unique constraint.

Source code

                public function dropUnique($name, $table)
{
    return 'ALTER TABLE ' . $this->db->quoteTableName($table)
        . ' DROP CONSTRAINT ' . $this->db->quoteColumnName($name);
}

public string dropView ( $viewName ) $viewName string

The name of the view to be dropped.

return string

The DROP VIEW SQL statement.

Source code

                public function dropView($viewName)
{
    return 'DROP VIEW ' . $this->db->quoteTableName($viewName);
}

Execute a SQL statement for resetting the sequence value of a table's primary key.

Reason for execute is that some databases (Oracle) need several queries to do so. The sequence is reset such that the primary key of the next new row inserted will have the specified value or the maximum existing value +1.

public void executeResetSequence ( $table, $value = null ) $table string

The name of the table whose primary key sequence is reset

$value array|string|null

The value for the primary key of the next new row inserted. If this is not set, the next new row's primary key will have the maximum existing value +1.

throws yii\base\NotSupportedException

if this is not supported by the underlying DBMS

Source code

                public function executeResetSequence($table, $value = null)
{
    $tableSchema = $this->db->getTableSchema($table);
    if ($tableSchema === null) {
        throw new InvalidArgumentException("Unknown table: $table");
    }
    if ($tableSchema->sequenceName === null) {
        throw new InvalidArgumentException("There is no sequence associated with table: $table");
    }
    if ($value !== null) {
        $value = (int) $value;
    } else {
        if (count($tableSchema->primaryKey) > 1) {
            throw new InvalidArgumentException("Can't reset sequence for composite primary key in table: $table");
        }
        
        $value = $this->db->useMaster(function (Connection $db) use ($tableSchema) {
            return $db->createCommand(
                'SELECT MAX("' . $tableSchema->primaryKey[0] . '") FROM "' . $tableSchema->name . '"'
            )->queryScalar();
        }) + 1;
    }
    
    $this->db->createCommand('DROP SEQUENCE "' . $tableSchema->sequenceName . '"')->execute();
    $this->db->createCommand('CREATE SEQUENCE "' . $tableSchema->sequenceName . '" START WITH ' . $value
        . ' INCREMENT BY 1 NOMAXVALUE NOCACHE')->execute();
}

Defined in: yii\db\QueryBuilder::getColumnType()

Converts an abstract column type into a physical column type.

The conversion is done using the type map specified in $typeMap. The following abstract column types are supported (using MySQL as an example to explain the corresponding physical types):

pk: an auto-incremental primary key type, will be converted into "int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY"
bigpk: an auto-incremental primary key type, will be converted into "bigint(20) NOT NULL AUTO_INCREMENT PRIMARY KEY"
upk: an unsigned auto-incremental primary key type, will be converted into "int(10) UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY"
char: char type, will be converted into "char(1)"
string: string type, will be converted into "varchar(255)"
text: a long string type, will be converted into "text"
smallint: a small integer type, will be converted into "smallint(6)"
integer: integer type, will be converted into "int(11)"
bigint: a big integer type, will be converted into "bigint(20)"
boolean: boolean type, will be converted into "tinyint(1)"
float`: float number type, will be converted into "float"
decimal: decimal number type, will be converted into "decimal"
datetime: datetime type, will be converted into "datetime"
timestamp: timestamp type, will be converted into "timestamp"
time: time type, will be converted into "time"
date: date type, will be converted into "date"
money: money type, will be converted into "decimal(19,4)"
binary: binary data type, will be converted into "blob"

If the abstract type contains two or more parts separated by spaces (e.g. "string NOT NULL"), then only the first part will be converted, and the rest of the parts will be appended to the converted result. For example, 'string NOT NULL' is converted to 'varchar(255) NOT NULL'.

For some of the abstract types you can also specify a length or precision constraint by appending it in round brackets directly to the type. For example string(32) will be converted into "varchar(32)" on a MySQL database. If the underlying DBMS does not support these kind of constraints for a type it will be ignored.

If a type cannot be found in $typeMap, it will be returned without any change.

Source code

                public function getColumnType($type)
{
    if ($type instanceof ColumnSchemaBuilder) {
        $type = $type->__toString();
    }
    if (isset($this->typeMap[$type])) {
        return $this->typeMap[$type];
    } elseif (preg_match('/^(\w+)\((.+?)\)(.*)$/', $type, $matches)) {
        if (isset($this->typeMap[$matches[1]])) {
            return preg_replace('/\(.+\)/', '(' . $matches[2] . ')', $this->typeMap[$matches[1]]) . $matches[3];
        }
    } elseif (preg_match('/^(\w+)\s+/', $type, $matches)) {
        if (isset($this->typeMap[$matches[1]])) {
            return preg_replace('/^\w+/', $this->typeMap[$matches[1]], $type);
        }
    }
    return $type;
}

Source code

                public function getExpressionBuilder(ExpressionInterface $expression)
{
    $className = get_class($expression);
    if (!isset($this->expressionBuilders[$className])) {
        foreach (array_reverse($this->expressionBuilders) as $expressionClass => $builderClass) {
            if (is_subclass_of($expression, $expressionClass)) {
                $this->expressionBuilders[$className] = $builderClass;
                break;
            }
        }
        if (!isset($this->expressionBuilders[$className])) {
            throw new InvalidArgumentException('Expression of class ' . $className . ' can not be built in ' . get_class($this));
        }
    }
    if ($this->expressionBuilders[$className] === __CLASS__) {
        return $this;
    }
    if (!is_object($this->expressionBuilders[$className])) {
        $this->expressionBuilders[$className] = new $this->expressionBuilders[$className]($this);
    }
    return $this->expressionBuilders[$className];
}

protected boolean hasLimit ( $limit ) $limit mixed

The given limit

return boolean

Whether the limit is effective

Source code

                protected function hasLimit($limit)
{
    return ($limit instanceof ExpressionInterface) || ctype_digit((string)$limit);
}

Defined in: yii\base\BaseObject::hasMethod()

Returns a value indicating whether a method is defined.

The default implementation is a call to php function method_exists(). You may override this method when you implemented the php magic method __call().

Source code

                public function hasMethod($name)
{
    return method_exists($this, $name);
}

protected boolean hasOffset ( $offset ) $offset mixed

The given offset

return boolean

Whether the offset is effective

Source code

                protected function hasOffset($offset)
{
    return ($offset instanceof ExpressionInterface) || ctype_digit((string)$offset) && (string)$offset !== '0';
}

Defined in: yii\base\BaseObject::hasProperty()

Returns a value indicating whether a property is defined.

A property is defined if:

the class has a getter or setter method associated with the specified name (in this case, property name is case-insensitive);
the class has a member variable with the specified name (when $checkVars is true);

See also:

public boolean hasProperty ( $name, $checkVars = true ) $name string

The property name

$checkVars boolean

Whether to treat member variables as properties

return boolean

Whether the property is defined

Source code

                public function hasProperty($name, $checkVars = true)
{
    return $this->canGetProperty($name, $checkVars) || $this->canSetProperty($name, false);
}

Defined in: yii\db\QueryBuilder::init()

Initializes the object.

This method is invoked at the end of the constructor after the object is initialized with the given configuration.

Source code

                public function init()
{
    parent::init();
    $this->expressionBuilders = array_merge($this->defaultExpressionBuilders(), $this->expressionBuilders);
    $this->conditionClasses = array_merge($this->defaultConditionClasses(), $this->conditionClasses);
}

Defined in: yii\db\QueryBuilder::insert()

Creates an INSERT SQL statement.

For example, `php $sql = $queryBuilder->insert('user', [

'name' => 'Sam',
'age' => 30,

], $params); ` The method will properly escape the table and column names.

public string insert ( $table, $columns, &$params ) $table string

The table that new rows will be inserted into.

$columns array|yii\db\Query

The column data (name => value) to be inserted into the table or instance of Query to perform INSERT INTO ... SELECT SQL statement. Passing of Query is available since version 2.0.11.

$params array

The binding parameters that will be generated by this method. They should be bound to the DB command later.

return string

The INSERT SQL

Source code

                public function insert($table, $columns, &$params)
{
    list($names, $placeholders, $values, $params) = $this->prepareInsertValues($table, $columns, $params);
    return 'INSERT INTO ' . $this->db->quoteTableName($table)
        . (!empty($names) ? ' (' . implode(', ', $names) . ')' : '')
        . (!empty($placeholders) ? ' VALUES (' . implode(', ', $placeholders) . ')' : $values);
}

protected array prepareInsertSelectSubQuery ( $columns, $schema, $params = [] ) $columns yii\db\Query

Object, which represents select query.

$schema yii\db\Schema

Schema object to quote column name.

$params array

The parameters to be bound to the generated SQL statement. These parameters will be included in the result with the additional parameters generated during the query building process.

return array

Array of column names, values and params.

throws yii\base\InvalidArgumentException

if query's select does not contain named parameters only.

Source code

                protected function prepareInsertSelectSubQuery($columns, $schema, $params = [])
{
    if (!is_array($columns->select) || empty($columns->select) || in_array('*', $columns->select)) {
        throw new InvalidArgumentException('Expected select query object with enumerated (named) parameters');
    }
    list($values, $params) = $this->build($columns, $params);
    $names = [];
    $values = ' ' . $values;
    foreach ($columns->select as $title => $field) {
        if (is_string($title)) {
            $names[] = $schema->quoteColumnName($title);
        } elseif (preg_match('/^(.*?)(?i:\s+as\s+|\s+)([\w\-_\.]+)$/', $field, $matches)) {
            $names[] = $schema->quoteColumnName($matches[2]);
        } else {
            $names[] = $schema->quoteColumnName($field);
        }
    }
    return [$names, $values, $params];
}

Prepares a VALUES part for an INSERT SQL statement.

protected array prepareInsertValues ( $table, $columns, $params = [] ) $table string

The table that new rows will be inserted into.

$columns array|yii\db\Query

The column data (name => value) to be inserted into the table or instance of Query to perform INSERT INTO ... SELECT SQL statement.

$params array

The binding parameters that will be generated by this method. They should be bound to the DB command later.

return array

Array of column names, placeholders, values and params.

Source code

                protected function prepareInsertValues($table, $columns, $params = [])
{
    list($names, $placeholders, $values, $params) = parent::prepareInsertValues($table, $columns, $params);
    if (!$columns instanceof Query && empty($names)) {
        $tableSchema = $this->db->getSchema()->getTableSchema($table);
        if ($tableSchema !== null) {
            $columns = !empty($tableSchema->primaryKey) ? $tableSchema->primaryKey : [reset($tableSchema->columns)->name];
            foreach ($columns as $name) {
                $names[] = $this->db->quoteColumnName($name);
                $placeholders[] = 'DEFAULT';
            }
        }
    }
    return [$names, $placeholders, $values, $params];
}

protected array prepareUpdateSets ( $table, $columns, $params = [] ) $table string

The table to be updated.

$columns array

The column data (name => value) to be updated.

$params array

The binding parameters that will be modified by this method so that they can be bound to the DB command later.

return array

An array SET parts for an UPDATE SQL statement (the first array element) and params (the second array element).

Source code

                protected function prepareUpdateSets($table, $columns, $params = [])
{
    $tableSchema = $this->db->getTableSchema($table);
    $columnSchemas = $tableSchema !== null ? $tableSchema->columns : [];
    $sets = [];
    foreach ($columns as $name => $value) {
        $value = isset($columnSchemas[$name]) ? $columnSchemas[$name]->dbTypecast($value) : $value;
        if ($value instanceof ExpressionInterface) {
            $placeholder = $this->buildExpression($value, $params);
        } else {
            $placeholder = $this->bindParam($value, $params);
        }
        $sets[] = $this->db->quoteColumnName($name) . '=' . $placeholder;
    }
    return [$sets, $params];
}

Source code

                protected function prepareUpsertColumns($table, $insertColumns, $updateColumns, &$constraints = [])
{
    if ($insertColumns instanceof Query) {
        list($insertNames) = $this->prepareInsertSelectSubQuery($insertColumns, $this->db->getSchema());
    } else {
        $insertNames = array_map([$this->db, 'quoteColumnName'], array_keys($insertColumns));
    }
    $uniqueNames = $this->getTableUniqueColumnNames($table, $insertNames, $constraints);
    $uniqueNames = array_map([$this->db, 'quoteColumnName'], $uniqueNames);
    if ($updateColumns !== true) {
        return [$uniqueNames, $insertNames, null];
    }
    return [$uniqueNames, $insertNames, array_diff($insertNames, $uniqueNames)];
}

public string renameColumn ( $table, $oldName, $newName ) $table string

The table whose column is to be renamed. The name will be properly quoted by the method.

$oldName string

The old name of the column. The name will be properly quoted by the method.

$newName string

The new name of the column. The name will be properly quoted by the method.

return string

The SQL statement for renaming a DB column.

Source code

                public function renameColumn($table, $oldName, $newName)
{
    return 'ALTER TABLE ' . $this->db->quoteTableName($table)
        . ' RENAME COLUMN ' . $this->db->quoteColumnName($oldName)
        . ' TO ' . $this->db->quoteColumnName($newName);
}

Defined in: yii\db\QueryBuilder::resetSequence()

Creates a SQL statement for resetting the sequence value of a table's primary key.

The sequence will be reset such that the primary key of the next new row inserted will have the specified value or the maximum existing value +1.

public string resetSequence ( $table, $value = null ) $table string

The name of the table whose primary key sequence will be reset

$value array|string|null

The value for the primary key of the next new row inserted. If this is not set, the next new row's primary key will have the maximum existing value +1.

return string

The SQL statement for resetting sequence

throws yii\base\NotSupportedException

if this is not supported by the underlying DBMS

Source code

                public function resetSequence($table, $value = null)
{
    throw new NotSupportedException($this->db->getDriverName() . ' does not support resetting sequence.');
}

Creates a SELECT EXISTS() SQL statement.

Source code

                public function selectExists($rawSql)
{
    return 'SELECT CASE WHEN EXISTS(' . $rawSql . ') THEN 1 ELSE 0 END FROM DUAL';
}

public void setConditionClasses ( $classes ) $classes string[]

Map of condition aliases to condition classes. For example:

['LIKE' => yii\db\condition\LikeCondition::class]

Source code

                public function setConditionClasses($classes)
{
    $this->conditionClasses = array_merge($this->conditionClasses, $classes);
}

Source code

                public function setExpressionBuilders($builders)
{
    $this->expressionBuilders = array_merge($this->expressionBuilders, $builders);
}

public string truncateTable ( $table ) $table string

The table to be truncated. The name will be properly quoted by the method.

return string

The SQL statement for truncating a DB table.

Source code

                public function truncateTable($table)
{
    return 'TRUNCATE TABLE ' . $this->db->quoteTableName($table);
}

Defined in: yii\db\QueryBuilder::update()

Creates an UPDATE SQL statement.

For example,

$params = [];
$sql = $queryBuilder->update('user', ['status' => 1], 'age > 30', $params);

The method will properly escape the table and column names.

public string update ( $table, $columns, $condition, &$params ) $table string

The table to be updated.

$columns array

The column data (name => value) to be updated.

$condition array|string

The condition that will be put in the WHERE part. Please refer to yii\db\Query::where() on how to specify condition.

$params array

The binding parameters that will be modified by this method so that they can be bound to the DB command later.

return string

The UPDATE SQL

Source code

                public function update($table, $columns, $condition, &$params)
{
    list($lines, $params) = $this->prepareUpdateSets($table, $columns, $params);
    $sql = 'UPDATE ' . $this->db->quoteTableName($table) . ' SET ' . implode(', ', $lines);
    $where = $this->buildWhere($condition, $params);
    return $where === '' ? $sql : $sql . ' ' . $where;
}

Creates an SQL statement to insert rows into a database table if they do not already exist (matching unique constraints), or update them if they do.

For example,

$sql = $queryBuilder->upsert('pages', [
    'name' => 'Front page',
    'url' => 'https://example.com/', 
    'visits' => 0,
], [
    'visits' => new \yii\db\Expression('visits + 1'),
], $params);

The method will properly escape the table and column names.

public string upsert ( $table, $insertColumns, $updateColumns, &$params ) $table string

The table that new rows will be inserted into/updated in.

$insertColumns array|yii\db\Query

The column data (name => value) to be inserted into the table or instance of yii\db\Query to perform INSERT INTO ... SELECT SQL statement.

$updateColumns array|boolean

The column data (name => value) to be updated if they already exist. If true is passed, the column data will be updated to match the insert column data. If false is passed, no update will be performed if the column data already exists.

$params array

The binding parameters that will be generated by this method. They should be bound to the DB command later.

return string

The resulting SQL.

throws yii\base\NotSupportedException

if this is not supported by the underlying DBMS.

Source code

                public function upsert($table, $insertColumns, $updateColumns, &$params)
{
    
    list($uniqueNames, $insertNames, $updateNames) = $this->prepareUpsertColumns($table, $insertColumns, $updateColumns, $constraints);
    if (empty($uniqueNames)) {
        return $this->insert($table, $insertColumns, $params);
    }
    if ($updateNames === []) {
        
        $updateColumns = false;
    }
    $onCondition = ['or'];
    $quotedTableName = $this->db->quoteTableName($table);
    foreach ($constraints as $constraint) {
        $constraintCondition = ['and'];
        foreach ($constraint->columnNames as $name) {
            $quotedName = $this->db->quoteColumnName($name);
            $constraintCondition[] = "$quotedTableName.$quotedName=\"EXCLUDED\".$quotedName";
        }
        $onCondition[] = $constraintCondition;
    }
    $on = $this->buildCondition($onCondition, $params);
    list(, $placeholders, $values, $params) = $this->prepareInsertValues($table, $insertColumns, $params);
    if (!empty($placeholders)) {
        $usingSelectValues = [];
        foreach ($insertNames as $index => $name) {
            $usingSelectValues[$name] = new Expression($placeholders[$index]);
        }
        $usingSubQuery = (new Query())
            ->select($usingSelectValues)
            ->from('DUAL');
        list($usingValues, $params) = $this->build($usingSubQuery, $params);
    }
    $mergeSql = 'MERGE INTO ' . $this->db->quoteTableName($table) . ' '
        . 'USING (' . (isset($usingValues) ? $usingValues : ltrim($values, ' ')) . ') "EXCLUDED" '
        . "ON ($on)";
    $insertValues = [];
    foreach ($insertNames as $name) {
        $quotedName = $this->db->quoteColumnName($name);
        if (strrpos($quotedName, '.') === false) {
            $quotedName = '"EXCLUDED".' . $quotedName;
        }
        $insertValues[] = $quotedName;
    }
    $insertSql = 'INSERT (' . implode(', ', $insertNames) . ')'
        . ' VALUES (' . implode(', ', $insertValues) . ')';
    if ($updateColumns === false) {
        return "$mergeSql WHEN NOT MATCHED THEN $insertSql";
    }
    if ($updateColumns === true) {
        $updateColumns = [];
        foreach ($updateNames as $name) {
            $quotedName = $this->db->quoteColumnName($name);
            if (strrpos($quotedName, '.') === false) {
                $quotedName = '"EXCLUDED".' . $quotedName;
            }
            $updateColumns[$name] = new Expression($quotedName);
        }
    }
    list($updates, $params) = $this->prepareUpdateSets($table, $updateColumns, $params);
    $updateSql = 'UPDATE SET ' . implode(', ', $updates);
    return "$mergeSql WHEN MATCHED THEN $updateSql WHEN NOT MATCHED THEN $insertSql";
}

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