Function winref_checkspec

src/backend/parser/parse_clause.c:224–237

* winref_checkspec * * See if any WindowFuncss using this spec are DISTINCT qualified. * * In addition, we're going to check winrequireorder / winallowframe. * You might want to do it in ParseFuncOrColumn, * but we need to do this here after all the transformations * (especially parent inheritance) was done. */

 * (especially parent inheritance) was done.
 */
static bool
winref_checkspec(ParseState *pstate, List *targetlist, Index winref,
				 bool has_order, bool has_frame)
{
	winref_check_ctx ctx;

	ctx.pstate = pstate;
	ctx.winref = winref;
	ctx.has_order = has_order;
	ctx.has_frame = has_frame;

	return expression_tree_walker((Node *) targetlist,
								  winref_checkspec_walker, (void *) &ctx);
}

/*
 * setTargetTable