SPI_getvalue
庘昄劉
SPI_getvalue -- 誫啂弄滯庖枕䔇庖严婾唚
寘傋
char * SPI_getvalue(HeapTuple row, TupleDesc rowdesc, int colnumber)
柟誄
SPI_getvalue 誫啂弄滯䔇庖枕䔇昄唚䔇庖严婾臘䯄嘵嚟㔗
䂷悩滇櫆婘䫘 palloc 彖陉䔇喙庻麯䔇㔗婘嘹婉驔襕垄幋劯嘹埇傖嘪䫘 pfree 麪櫆喙庻㔗
埗昄
- HeapTuple row
襕演昖䔇膷噖臯
- TupleDesc rowdesc
膷噖臯柟誄
- int colnumber
庖枕䚡埙(傯 1 嚔哋)
誫啂唚
庖枕唚套悩庖枕滇䷺潡蔙 colnumber 轙庺评啘(SPI_result 螆䘞婺 SPI_ERROR_NOATTRIBUTE)潡蔙澇橬埇䫘䔇膷庺庘昄(SPI_result 螆䘞婺 SPI_ERROR_NOOUTFUNC)䔇施唍誫啂 NULL