morrySnow commented on code in PR #15369:
URL: https://github.com/apache/doris/pull/15369#discussion_r1057297402
##########
fe/fe-core/src/main/antlr4/org/apache/doris/nereids/DorisParser.g4:
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@@ -226,6 +226,7 @@ multipartIdentifier
// -----------------Expression-----------------
namedExpression
: expression (AS? name=errorCapturingIdentifier)?
+ | constant (AS? strName = STRING+)?
Review Comment:
not just constant, all expression should support string alias
```sql
SELECT c1 AS 'string_alias' FROM tbl;
```
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