SPI_gettype — return the data type name of the specified column
char * SPI_gettype(TupleDesc
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.)
input row description
column number (count starts at 1)
The data type name of the specified column, or
NULL on error.
SPI_result is set to
SPI_ERROR_NOATTRIBUTE on error.
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