I'm trying to figure out the SPI and need a bit of help, because the docs do not mention (that I can find) some parts of the interface. - SPI_exec(char * sql, int count): this function seems to execute the query. Is the `count' parameter the maximum number of tuples to return? Does count=0 imply return everything? Return value are the SPI_* flags defined in spi.h? - SPI_processed: number of tuples processed during execution of SPI_exec? Does this equate to N in the INSERT/DELETE/UPDATE N messages that are emitted by psql? - Are there any restrictions on what types of queries may be executed by a trigger using SPI_exec? Thanks for the help. Cheers, Brook
