SPI_register_trigger_data - make ephemeral trigger data available in SPI queries

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

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.

SPI_register_trigger_data - make ephemeral trigger data available in SPI queries

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 17.5 2025 SPI_REGISTER_TRIGGER_DATA(3)

int SPI_register_trigger_data(TriggerData *tdata)