## Name

SPI_getargtypeid — return the data type OID for an argument of a statement prepared by `SPI_prepare`

## Synopsis

    Oid SPI_getargtypeid(SPIPlanPtr plan, int argIndex)

## Description

`SPI_getargtypeid` returns the OID representing the type for the `argIndex`'th argument of a statement prepared by `SPI_prepare`. First argument is at index zero.

## Arguments

`SPIPlanPtr `plan``

  prepared statement (returned by `SPI_prepare`)

`int `argIndex``

  zero based index of the argument

## Return Value

The type OID of the argument at the given index. If the `plan` is `NULL` or invalid, or `argIndex` is less than 0 or not less than the number of arguments declared for the `plan`, `SPI_result` is set to `SPI_ERROR_ARGUMENT` and `InvalidOid` is returned.