SPI_getvalue
Description
SPI_getvalue
returns the string representation
of the value of the specified column.
The result is returned in memory allocated using
palloc
. (You can use
pfree
to release the memory when you don't
need it anymore.)
Arguments
- HeapTuple row
-
input row to be examined
- TupleDesc rowdesc
-
input row description
- int colnumber
-
column number (count starts at 1)
Return Value
Column value, or NULL if the column is null, colnumber is out of range ( SPI_result is set to SPI_ERROR_NOATTRIBUTE ), or no output function is available ( SPI_result is set to SPI_ERROR_NOOUTFUNC ).