Postgresql 中文操作指南

SPI_gettype

SPI_gettype — 返回指定列的数据类型名称

SPI_gettype — return the data type name of the specified column

Synopsis

char * SPI_gettype(TupleDesc rowdesc, int colnumber)

Description

SPI_gettype 返回指定列的数据类型名称的副本。(在不再需要时,可以使用 pfree 来释放名称的副本。)

SPI_gettype returns a copy of the data type name of the specified column. (You can use pfree to release the copy of the name when you don’t need it anymore.)

Arguments

  • TupleDesc _rowdesc_

    • input row description

  • int _colnumber_

    • column number (count starts at 1)

Return Value

指定列的数据类型名称,或者在出错时为 NULL 。出错时, SPI_result 设置为 SPI_ERROR_NOATTRIBUTE

The data type name of the specified column, or NULL on error. SPI_result is set to SPI_ERROR_NOATTRIBUTE on error.