Hi,
Consider following testcase,
CREATE TABLE footable(id int4, name varchar2(10));
CREATE FUNCTION foofunc(a footable, b integer DEFAULT 10)
RETURNS integer AS $$ SELECT 123; $$ LANGUAGE SQL;
CREATE FUNCTION foofunc(a footable, b numeric DEFAULT 10)
RETURNS integer AS $$ SELECT 123; $$ LANGUAGE SQL;
SELECT (footable.*).foofunc FROM footable;
ERROR: column footable.foofunc does not exist
LINE 1: SELECT (footable.*).foofunc FROM footable;
^
The error message thrown is seems to be wrong. When I dig into the code, I
found in function ParseFuncOrColumn(), if we just add small condition it
will throw correct error message. i.e. " function foofunc(footable) is not
unique". I have made a slight change in code, which is throwing the correct
error message now. The code changes are attached in the patch.
--
Piyush S Newe
Principal Engineer
EnterpriseDB
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diff --git a/src/backend/parser/parse_func.c b/src/backend/parser/parse_func.c
index 39123a7..0536b58 100644
--- a/src/backend/parser/parse_func.c
+++ b/src/backend/parser/parse_func.c
@@ -265,7 +265,7 @@ ParseFuncOrColumn(ParseState *pstate, List *funcname, List *fargs,
* If we are dealing with the attribute notation rel.function, let the
* caller handle failure.
*/
- if (is_column)
+ if (is_column && fdresult != FUNCDETAIL_MULTIPLE)
return NULL;
/*
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