seawinde opened a new pull request, #53329:
URL: https://github.com/apache/doris/pull/53329
### What problem does this PR solve?
the table def is as following, the first final field col name is 'STORE',
the col name is invalid because it contains '''
```sql
CREATE TABLE IF NOT EXISTS set_operation_table_test2
PROPERTIES ( "replication_num" = "1")
AS
SELECT 'STORE',
date_add(ss_sold_date_sk, INTERVAL 2 DAY),
ss_item_sk as item_sk,
ss_sales_price as sales_price,
'STORE()##'
FROM store_sales
UNION ALL
SELECT 'WEB',
ws_sold_date_sk as date_sk,
ws_item_sk as item_sk,
ws_sales_price as sales_price,
''
FROM web_sales;
```
the pr fix this , the final output col names are as following
`"__literal_0", "__cast_1", "item_sk", "sales_price", "__literal_4"`
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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