Checks if a result set column or output parameter has the SQL null value.
Parameters
MimerStatement statementhandle,
int16_t paramno_colno)
statementhandle
in
A handle returned by MimerBeginStatement[C|8], identifying a statement that have been executed.
paramno_colno
in
The parameter number or column number to check for null in. First column/parameter is 1.
Returns
If the column or parameter is the SQL null value, a positive value is returned. If it is not the SQL null value zero is returned. If an error occurred, a negative error code is returned.
Return value
Description
> 0
Null is returned.
0
Not null.
MIMER_HANDLE_INVALID
The statementhandle parameter was not recognized as a handle.
MIMER_NONEXISTENT_COLUMN_PARAMETER
The supplied column or parameter number did not exist.
MIMER_PARAMETER_NOT_OUTPUT
The referenced parameter is not an output or input/output parameter, which is required when calling a data output routine.
MIMER_SEQUENCE_ERROR
If the statement cursor is not open, or the current row is before the first row of the result set, or after the last row of the result set.
Notes
Micro API compatible.
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