NAME

       SPI_register_trigger_data - make ephemeral trigger data available in SPI queries

SYNOPSIS

       int SPI_register_trigger_data(TriggerData *tdata)

DESCRIPTION

       SPI_register_trigger_data makes any ephemeral relations captured by a trigger available to queries
       planned and executed through the current SPI connection. Currently, this means the transition tables
       captured by an AFTER trigger defined with a REFERENCING OLD/NEW TABLE AS ... clause. This function should
       be called by a PL trigger handler function after connecting.

ARGUMENTS

       TriggerData *tdata
           the TriggerData object passed to a trigger handler function as fcinfo->context

RETURN VALUE

       If the execution of the command was successful then the following (nonnegative) value will be returned:

       SPI_OK_TD_REGISTER
           if the captured trigger data (if any) has been successfully registered

       On error, one of the following negative values is returned:

       SPI_ERROR_ARGUMENT
           if tdata is NULL

       SPI_ERROR_UNCONNECTED
           if called from an unconnected C function

       SPI_ERROR_REL_DUPLICATE
           if the name of any trigger data transient relation is already registered for this connection

PostgreSQL 17.6                                       2025                          SPI_REGISTER_TRIGGER_DATA(3)