Thanks everyone. Your tips about casting my arg to round() as ::numeric worked just fine. I guess I was surprised that plpgsql didn't that on it's own! I'm used to too many forgiving c compilers, and such.
TJ
Christoph Haller wrote:
TJ O'Donnell wrote:
I received the following error when executing a SQL statement:
SQL error: ERROR: function round(double precision, integer) does not exist
In statement:
select id,smiles,smarts,parameter,oe_count_matches(smiles,smarts) as count, round((parameter*oe_count_matches(smiles,smarts)),2) as psa,tpsa(smiles) as ctpsa,tpsa from structure,tpsa where id < 237610 and oe_count_matches(smiles,smarts) > 0
order by id;
The functions described at: http://www.postgresql.org/docs/7.4/static/functions-math.html show that round(numeric,int) should work ok. If I use round() without a second argument, it works OK, but this gives a loss of precision which I do not want.
Can anyone help me with this?
Thanks, TJ
And round(numeric,int) does work ok. The error message is telling you there is double precision argument where a numeric is expected. And with 7.4.5 it says in addition HINT: No function matches the given name and argument types. You may need to add explicit type casts.
Try round((parameter*oe_count_matches(smiles,smarts))::numeric,2)
Works for me with double precision arguments.
Regards, Christoph
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