cleanup

diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 51c1d037885aed79f4a76a53fc1cadbf698b160c..b5e8d6db771e42c17ddf9fd84506cd9be99a32dc 100644 (file)
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -3702,6 +3702,7 @@ a_expr:  attr opt_indirection
                                {       $$ = makeA_Expr(OP, "<", $1, $3); }
                | a_expr '>' a_expr
                                {       $$ = makeA_Expr(OP, ">", $1, $3); }
+               /* We allow this for standards-broken SQL products, like MS stuff */
                | a_expr '=' NULL_P
                                {       $$ = makeA_Expr(ISNULL, NULL, $1, NULL); }
                | a_expr '=' a_expr