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Make procedure OUT parameters work with JDBC 

The JDBC driver sends OUT parameters with type void.  This makes sense
when calling a function, so that the parameters are ignored in
ParseFuncOrColumn().  For a procedure call we want to treat them as
unknown.

Reviewed-by: Andrew Dunstan <andrew@dunslane.net>
Discussion: https://www.postgresql.org/message-id/flat/d7e49540-ea92-b4e2-5fff-42036102f968%402ndquadrant.com
This commit is contained in:
Peter Eisentraut 2020-10-27 08:58:48 +01:00
parent 8fed2eadb8
commit 9213462c53
1 changed files with 9 additions and 0 deletions
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9
src/backend/parser/parse_param.c
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@ -163,6 +163,15 @@ variable_paramref_hook(ParseState *pstate, ParamRef *pref)
if (*pptype == InvalidOid)
*pptype = UNKNOWNOID;
/*
* If the argument is of type void and it's procedure call, interpret it
* as unknown. This allows the JDBC driver to not have to distinguish
* function and procedure calls. See also another component of this hack
* in ParseFuncOrColumn().
*/
if (*pptype == VOIDOID && pstate->p_expr_kind == EXPR_KIND_CALL_ARGUMENT)
*pptype = UNKNOWNOID;
param = makeNode(Param);
param->paramkind = PARAM_EXTERN;
param->paramid = paramno;