diff options
Diffstat (limited to 'src/backend/parser/gram.y')
| -rw-r--r-- | src/backend/parser/gram.y | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y index 4558c02f6a6..b16ffb9bf7f 100644 --- a/src/backend/parser/gram.y +++ b/src/backend/parser/gram.y @@ -741,10 +741,9 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query); %nonassoc '<' '>' '=' LESS_EQUALS GREATER_EQUALS NOT_EQUALS %nonassoc BETWEEN IN_P LIKE ILIKE SIMILAR NOT_LA %nonassoc ESCAPE /* ESCAPE must be just above LIKE/ILIKE/SIMILAR */ -%left POSTFIXOP /* dummy for postfix Op rules */ /* * To support target_el without AS, we must give IDENT an explicit priority - * between POSTFIXOP and Op. We can safely assign the same priority to + * between ESCAPE and Op. We can safely assign the same priority to * various unreserved keywords as needed to resolve ambiguities (this can't * have any bad effects since obviously the keywords will still behave the * same as if they weren't keywords). We need to do this: @@ -12993,8 +12992,6 @@ a_expr: c_expr { $$ = $1; } { $$ = (Node *) makeA_Expr(AEXPR_OP, $2, $1, $3, @2); } | qual_Op a_expr %prec Op { $$ = (Node *) makeA_Expr(AEXPR_OP, $1, NULL, $2, @1); } - | a_expr qual_Op %prec POSTFIXOP - { $$ = (Node *) makeA_Expr(AEXPR_OP, $2, $1, NULL, @2); } | a_expr AND a_expr { $$ = makeAndExpr($1, $3, @2); } @@ -13408,8 +13405,6 @@ b_expr: c_expr { $$ = (Node *) makeA_Expr(AEXPR_OP, $2, $1, $3, @2); } | qual_Op b_expr %prec Op { $$ = (Node *) makeA_Expr(AEXPR_OP, $1, NULL, $2, @1); } - | b_expr qual_Op %prec POSTFIXOP - { $$ = (Node *) makeA_Expr(AEXPR_OP, $2, $1, NULL, @2); } | b_expr IS DISTINCT FROM b_expr %prec IS { $$ = (Node *) makeSimpleA_Expr(AEXPR_DISTINCT, "=", $1, $5, @2); @@ -14665,11 +14660,7 @@ target_el: a_expr AS ColLabel } /* * We support omitting AS only for column labels that aren't - * any known keyword. There is an ambiguity against postfix - * operators: is "a ! b" an infix expression, or a postfix - * expression and a column label? We prefer to resolve this - * as an infix expression, which we accomplish by assigning - * IDENT a precedence higher than POSTFIXOP. + * any known keyword. */ | a_expr IDENT { |