PostgreSQL 9.6.9 Documentation
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# SPI_execute_plan

## Name

SPI_execute_plan -- execute a statement prepared by `SPI_prepare`

## Synopsis

    int SPI_execute_plan(SPIPlanPtr plan, Datum * values, const char * nulls,
                         bool read_only, long count)

## Description

`SPI_execute_plan` executes a statement prepared by `SPI_prepare` or one of its siblings. `read_only` and `count` have the same interpretation as in `SPI_execute`.

## Arguments

`SPIPlanPtr `plan``

  prepared statement (returned by `SPI_prepare`)

`Datum * `values``

  An array of actual parameter values. Must have same length as the statement's number of arguments.

`const char * `nulls``

  An array describing which parameters are null. Must have same length as the statement's number of arguments.

  If `nulls` is `NULL` then `SPI_execute_plan` assumes that no parameters are null. Otherwise, each entry of the `nulls` array should be `' '` if the corresponding parameter value is non-null, or `'n'` if the corresponding parameter value is null. (In the latter case, the actual value in the corresponding `values` entry doesn't matter.) Note that `nulls` is not a text string, just an array: it does not need a `'\0'` terminator.

`bool `read_only``

  `true` for read-only execution

`long `count``

  maximum number of rows to return, or `0` for no limit

## Return Value

The return value is the same as for `SPI_execute`, with the following additional possible error (negative) results:

`SPI_ERROR_ARGUMENT`

  if `plan` is `NULL` or invalid, or `count` is less than 0

`SPI_ERROR_PARAM`

  if `values` is `NULL` and `plan` was prepared with some parameters

`SPI_processed` and `SPI_tuptable` are set as in `SPI_execute` if successful.

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