SPI_gettype - return the data type name of the specified column

TupleDesc rowdesc input row description int colnumber column number (count starts at 1)

SPI_gettype returns a copy of the data type name of the specified column. (You can use pfree to release the copy of the name when you don't need it anymore.)

SPI_gettype - return the data type name of the specified column

The data type name of the specified column, or NULL on error. SPI_result is set to SPI_ERROR_NOATTRIBUTE on error. PostgreSQL 17.5 2025 SPI_GETTYPE(3)

char * SPI_gettype(TupleDesc rowdesc, int colnumber)