PostgreSQL 7.1.2 Documentation
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SPI_modifytuple

Name

SPI_modifytuple -- Modifies tuple of relation

Synopsis

SPI_modifytuple(rel, tuple , nattrs
, attnum , Values , Nulls)

Inputs

Relation rel

HeapTuple tuple

Input tuple to be modified

int nattrs

Number of attribute numbers in attnum

int * attnum

Array of numbers of the attributes that are to be changed

Datum * Values

New values for the attributes specified

char * Nulls

Which attributes are NULL, if any

Outputs

HeapTuple

New tuple with modifications

non-NULL if tuple is not NULL and the modify was successful
NULL only if tuple is NULL

SPI_result

SPI_ERROR_ARGUMENT if rel is NULL or tuple is NULL or natts ≤ 0 or attnum is NULL or Values is NULL.
SPI_ERROR_NOATTRIBUTE if there is an invalid attribute number in attnum (attnum ≤ 0 or > number of attributes in tuple)

Description

SPI_modifytuple Modifies a tuple in upper Executor context. See the section on Memory Management.

Usage

If successful, a pointer to the new tuple is returned. The new tuple is allocated in upper Executor context (see Memory management). Passed tuple is not changed.

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