PostgreSQL 8.4.2 Documentation
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# SPI_saveplan

## Name

SPI_saveplan -- save a plan

## Synopsis

    SPIPlanPtr SPI_saveplan(SPIPlanPtr plan)

## Description

`SPI_saveplan` saves a passed plan (prepared by `SPI_prepare`) in memory that will not be freed by `SPI_finish` nor by the transaction manager, and returns a pointer to the saved plan. This gives you the ability to reuse prepared plans in the subsequent invocations of your procedure in the current session.

## Arguments

`SPIPlanPtr `plan``

  the plan to be saved

## Return Value

Pointer to the saved plan; `NULL` if unsuccessful. On error, `SPI_result` is set thus:

`SPI_ERROR_ARGUMENT`

  if `plan` is `NULL` or invalid

`SPI_ERROR_UNCONNECTED`

  if called from an unconnected procedure

## Notes

The passed-in plan is not freed, so you might wish to do `SPI_freeplan` on it to avoid leaking memory until `SPI_finish`.

If one of the objects (a table, function, etc.) referenced by the prepared plan is dropped or redefined, then future executions of `SPI_execute_plan` may fail or return different results than the plan initially indicates.

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