The _fetch_block_extfn v4 API method fetches a block that is allocated and configured by the UDF.
short _fetch_block_extfn( a_v4_extfn_table_context *cntxt, a_v4_extfn_row_block ** )
The UDF should implement this method, if it has a preferred layout for its transfer area.
Parameter | Description |
---|---|
cntxt | The procedure context object |
row_block | The row block object to fetch into |
1 if successful, 0 otherwise.