diff options
Diffstat (limited to 'src/backend/parser/gram.y')
| -rw-r--r-- | src/backend/parser/gram.y | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y index 7afc2d90075..a94adbb00a5 100644 --- a/src/backend/parser/gram.y +++ b/src/backend/parser/gram.y @@ -10,7 +10,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.58 1999/03/07 03:34:10 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.59 1999/03/14 05:15:08 momjian Exp $ * * HISTORY * AUTHOR DATE MAJOR EVENT @@ -3702,6 +3702,8 @@ a_expr: attr opt_indirection { $$ = makeA_Expr(OP, "<", $1, $3); } | a_expr '>' a_expr { $$ = makeA_Expr(OP, ">", $1, $3); } + | a_expr '=' NULL_P + { $$ = makeA_Expr(ISNULL, NULL, $1, NULL); } | a_expr '=' a_expr { $$ = makeA_Expr(OP, "=", $1, $3); } | ':' a_expr |