mingmwang commented on PR #5264:
URL: 
https://github.com/apache/arrow-datafusion/pull/5264#issuecomment-1437070399

   One more thing, looks like the SubqueryAlias logic is not consistent between 
the two rules `DecorrelateWhereExists` and `DecorrelateWhereIn`
   https://github.com/apache/arrow-datafusion/pull/4767
   
   I think you can make them consistent in the refactoring work.
   
   ```rust
    let sql = "SELECT t1_id, t1_name FROM t1 WHERE t1_id IN (SELECT t2_id FROM 
t2) ORDER BY t1_id";
           let msg = format!("Creating logical plan for '{sql}'");
           let dataframe = ctx.sql(&("explain ".to_owned() + 
sql)).await.expect(&msg);
           let plan = dataframe.into_optimized_plan()?;
           let expected = vec![
               "Explain [plan_type:Utf8, plan:Utf8]",
               "  Sort: t1.t1_id ASC NULLS LAST [t1_id:UInt32;N, 
t1_name:Utf8;N]",
               "    Projection: t1.t1_id, t1.t1_name [t1_id:UInt32;N, 
t1_name:Utf8;N]",
               "      LeftSemi Join: t1.t1_id = __correlated_sq_1.t2_id 
[t1_id:UInt32;N, t1_name:Utf8;N]",
               "        TableScan: t1 projection=[t1_id, t1_name] 
[t1_id:UInt32;N, t1_name:Utf8;N]",
               "        SubqueryAlias: __correlated_sq_1 [t2_id:UInt32;N]",
               "          Projection: t2.t2_id AS t2_id [t2_id:UInt32;N]",
               "            TableScan: t2 projection=[t2_id] [t2_id:UInt32;N]",
           ];
   
   ```
   
   ```rust
   let sql = "SELECT t1_id, t1_name FROM t1 WHERE NOT EXISTS (SELECT 1 FROM t2 
WHERE t1_id = t2_id and t1_id > 11) ORDER BY t1_id";
           let msg = format!("Creating logical plan for '{sql}'");
           let dataframe = ctx.sql(&("explain ".to_owned() + 
sql)).await.expect(&msg);
           let plan = dataframe.into_optimized_plan()?;
           let expected = vec![
               "Explain [plan_type:Utf8, plan:Utf8]",
               "  Sort: t1.t1_id ASC NULLS LAST [t1_id:UInt32;N, 
t1_name:Utf8;N]",
               "    Projection: t1.t1_id, t1.t1_name [t1_id:UInt32;N, 
t1_name:Utf8;N]",
               "      LeftAnti Join: t1.t1_id = t2.t2_id Filter: t1.t1_id > 
UInt32(11) [t1_id:UInt32;N, t1_name:Utf8;N]",
               "        TableScan: t1 projection=[t1_id, t1_name] 
[t1_id:UInt32;N, t1_name:Utf8;N]",
               "        Projection: t2.t2_id [t2_id:UInt32;N]",
               "          TableScan: t2 projection=[t2_id] [t2_id:UInt32;N]",
           ];
   ```


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