Allows the contract function writer to set the HASH BY specification when developing table operators.
void FNC_TblOpSetHashByDef(int streamno, FNC_Names_t *colNames);
- the input stream number.
- a pointer to the HASH BY metadata.
For details about the FNC_Names_t structure, see Table Operator Data Structures.
This function can only run if called from the contract function. It will error if the stream number is invalid or the HASH BY metadata was already set.