The EXTFNAPIV4_DESCRIBE_COL_IS_CONSTANT attribute indicates if the column is constant. Used in a describe_column_set scenario.
Description
True, if the column is constant for the lifetime of the statement. This property is valid only for input table arguments.
Usage
This is a read only property. All attempts to set it return EXTFNAPIV4_DESCRIBE_INVALID_ATTRIBUTE.
Returns
- EXTFNAPIV4_DESCRIBE_INVALID ATTRIBUTE –
this is a read-only property; all attempts to set return this error.
- EXTFNAPIV4_DESCRIBE_INVALID_STATE
–
set error returned, if the state is not Optimization.
- EXTFNAPIV4_DESCRIBE_INVALID_PARAMETER –
set error returned, if the arg_num is not zero.
- EXTFNAPIV4_DESCRIBE_INVALID_ATTRIBUTE_VALUE –
set error returned, if the UDF attempts to set this attribute to a value other than 0 or 1.
Query Processing States
Not applicable.