Hi,
I need to extract a text string representation of a timestamp from a
user-defined row type; e.g., from the composite type ('1980-01-01
12:00:00', 'Random Comment'), I'd like to extract the C string
1980-01-01 12:00:00 in my user-defined C function.
As I understand it, I should be able to do something like (assuming
"time" is the attribute name):
bool isNull;
HeapTupleHeader t = DatumGetHeapTupleHeader(row);
Datum var = GetAttributeByName( row, "time", & isNull );
// Check for null
char * ret = DatumGetCString( DirectFunctionCall1(textout, var ) );
However, the code above (and every other variant I've tried) invariable
segmentation faults the postmaster. so obviously I am doing something
wrong. Can someone explain (or point to an example that works) of how to
do this?
Regards,
Michael A.
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