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SPI_getvalue
Name
SPI_getvalue -- Returns the string value
of the specified attribute
Synopsis
SPI_getvalue(tuple, tupdesc, fnumber)
Inputs
- HeapTuple tuple
-
Input tuple to be examined
- TupleDesc tupdesc
-
Input tuple description
- int fnumber
-
Attribute number
Outputs
- char *
-
Attribute value or NULL if
| attribute is NULL |
| fnumber is out of range (SPI_result set to
SPI_ERROR_NOATTRIBUTE) |
| no output function available (SPI_result set to
SPI_ERROR_NOOUTFUNC) |
Description
SPI_getvalue returns an external
(string) representation of the value of the specified
attribute.
Usage
Attribute numbers are 1 based.
Algorithm
The result is returned as a palloc'd string. (Use pfree() to
release the string when done with it.)