Returns the smallest non-NULL value from a list of expressions. LEAST_IGNORE_NULLS supports all data types, including VARIANT.
LEAST_IGNORE_NULLS( <expr1> [ , <expr2> ... ] )
Copy
Arguments¶exprN
The arguments must include at least one expression. All the expressions should be of the same type or compatible types.
The first argument determines the return type:
If the first type is numeric, then the return type is ‘widened’ according to the numeric types in the list of all arguments.
If the first type is not numeric, then all other arguments must be convertible to the first type.
If all arguments are NULL, returns NULL.
Collation details¶The collation specifications of all input arguments must be compatible.
The comparisons follow the collation based on the input arguments’ collations and precedences.
The collation of the result of the function is the highest-precedence collation of the inputs.
Create a table and insert some values:
CREATE TABLE test_least_ignore_nulls ( col_1 INTEGER, col_2 INTEGER, col_3 INTEGER, col_4 FLOAT); INSERT INTO test_least_ignore_nulls (col_1, col_2, col_3, col_4) VALUES (1, 2, 3, 4.25), (2, 4, -1, NULL), (3, 6, NULL, -2.75);
Copy
Run a SELECT statement that returns the lowest non-null value in each row of the table:
SELECT col_1,
col_2,
col_3,
col_4,
LEAST_IGNORE_NULLS(col_1, col_2, col_3, col_4) AS least_ignore_nulls
FROM test_least_ignore_nulls
ORDER BY col_1;
Copy
+-------+-------+-------+-------+--------------------+ | COL_1 | COL_2 | COL_3 | COL_4 | LEAST_IGNORE_NULLS | |-------+-------+-------+-------+--------------------| | 1 | 2 | 3 | 4.25 | 1 | | 2 | 4 | -1 | NULL | -1 | | 3 | 6 | NULL | -2.75 | -2.75 | +-------+-------+-------+-------+--------------------+
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4