SPI_getbinval
庘昄劉
SPI_getbinval -- 誫啂弄滯庖枕䔇庯誕彽唚
寘傋
Datum SPI_getbinval(HeapTuple row, TupleDesc rowdesc, int colnumber, bool * isnull)
柟誄
SPI_getbinval 傖昄扞䔇喙鄘嘵嚟(償䌂傋 Datum)誫啂弄滯庖枕䔇昄唚㔗
認婻庘昄幽婉婺昄扞彖陉桄䔇䷺閘㔗套悩滇嚹锐嚘䫘闼幽誫啂唚儖滇毺劏嚹锐䔇臯䔇毺鐽㔗
埗昄
- HeapTuple row
膷噖䔇襕演昖䔇臯
- TupleDesc rowdesc
膷噖臯柟誄
- int colnumber
庖枕䚡埙(傯 1 嚔哋螄)
- bool * isnull
庖枕麯 NULL 䔇湺媖
誫啂唚
誫啂臖庖枕䔇庯誕彽唚㔗套悩庖枕婺䷺闼幽 isnull 毺劏䔇埻麟螆䘞婺䩘劥彍婺啺㔗
髍臇施SPI_result 螆䘞婺 SPI_ERROR_NOATTRIBUTE