PostgreSQL

SPI_copytuple — make a copy of a row in the upper executor context

SPI_copytuple makes a copy of a row in the upper executor context. This is normally used to return a modified row from a trigger. In a function declared to return a composite type, use SPI_returntuple instead.

This function can only be used while connected to SPI. Otherwise, it returns NULL and sets SPI_result to SPI_ERROR_UNCONNECTED.

the copied row, or NULL on error (see SPI_result for an error indication)

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