What it does is:
test=# SELECT row_number(), relname FROM pg_class LIMIT 3;
row_number | relname
------------+----------------
1 | pg_description
2 | pg_group
3 | pg_proc
(3 rows)This makes sense to me and I need this feature from time to time. My question is: How do I find out when a query starts? Inside a table function I can call SRF_IS_FIRSTCALL() to see when it is called first. Is there an easy way to check that inside an "ordinary" C function returning just one value?
Currently my function counts the number of times it has been called per connection. I could write a second function for resetting the counter but this is not too smart ...
Regards,
Hans
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