jayzhan211 commented on PR #11724:
URL: https://github.com/apache/datafusion/pull/11724#issuecomment-2267520733

   I rethink about the issue we want to solve, is there any valid query that 
shows the ambiguity between the identifier and column?
   
   ```
   statement ok
   create table t1(a int, "t1.a" int) as values (100, 1), (101, 2), (102, 3), 
(101, 2);
   
   query II
   select t1.a, "t1.a" from t1;
   ----
   100 1
   101 2
   102 3
   101 2
   
   query TT
   explain select t1.a, "t1.a" from t1; 
   ----
   logical_plan TableScan: t1 projection=[a, t1.a]
   physical_plan MemoryExec: partitions=1, partition_sizes=[1]
   ```


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