[GitHub] [incubator-doris] littleeleventhwolf commented on a diff in pull request #8906: [feat](sql) support star except modifier

[GitBox <gi...@apache.org>]

littleeleventhwolf commented on code in PR #8906:
URL: https://github.com/apache/incubator-doris/pull/8906#discussion_r847029355


##########
fe/fe-core/src/main/cup/sql_parser.cup:
##########
@@ -544,6 +544,7 @@ precedence left KW_LIKE, KW_REGEXP;
 precedence left EQUAL, LESSTHAN, GREATERTHAN;
 precedence left ADD, SUBTRACT;
 precedence left AT, STAR, DIVIDE, MOD, KW_DIV;
+precedence left KW_EXCEPT;

Review Comment:
   Because `select * except (field)` always match syntax below. 
   ```
   select_list ::=
   ... ...
       | STAR
       {:
           SelectList list = new SelectList();
           list.addItem(SelectListItem.createStarItem(null));
           RESULT = list;
       :}
   ```



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