SPI_getvalue -- return the string value of the specified column
Synopsis
char * SPI_getvalue(HeapTuple row, TupleDesc rowdesc, int colnumber)
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).
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