morrySnow opened a new pull request, #17813:
URL: https://github.com/apache/doris/pull/17813
# Proposed changes
Issue Number: close #xxx
## Problem summary
consider the query like this:
```sql
SELECT
k3, k4
FROM
test
WHERE
EXISTS( SELECT
d.*
FROM
(SELECT
k1 AS _1234, SUM(k2)
FROM
`test` d
GROUP BY _1234) d
LEFT JOIN
(SELECT
k1 AS _1234,
SUM(k2)
FROM
`test`
GROUP BY _1234) temp ON d._1234 = temp._1234)
ORDER BY k3, k4
```
when we analyze group by exprs in `temp` inline view. we bind the `_1234` on
`d._1234` by mistake.
that because, when we do analyze in a **SUB-QUERY**, we will resolve SlotRef
by itself **AND** parent's tuple. in the meanwhile, we register child's tuple
to parent's analyzer. So, in a **SUB-QUERY**, the brother's tuple will affect
the resolve result of current inlineview's slot.
This PR:
1. add a flag on the function `resolveColumnRef` in `Analyzer`
```java
private TupleDescriptor resolveColumnRef(String colName, boolean
requestFromChild);
private TupleDescriptor resolveColumnRef(TableName tblName, String colName,
boolean requestByChild);
```
2. add a flag to specify whether the tuple is from child.
```java
// alias name -> <from child, tupleDesc>
private final Multimap<String, Pair<Boolean, TupleDescriptor>> tupleByAlias;
```
when `requestByChild == true`, we **SKIP** the tuple from other child to
avoid resolve error.
## Checklist(Required)
* [ ] Does it affect the original behavior
* [ ] Has unit tests been added
* [ ] Has document been added or modified
* [ ] Does it need to update dependencies
* [ ] Is this PR support rollback (If NO, please explain WHY)
## Further comments
If this is a relatively large or complex change, kick off the discussion at
[[email protected]](mailto:[email protected]) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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