mkmik opened a new issue #1771:
URL: https://github.com/apache/arrow-datafusion/issues/1771
**Describe the bug**
Since we claim postgresql dialect compatibility, table identifiers in SQL
should be normalized to lowercase unless quoted.
**To Reproduce**
```console
> create table t1 as select * from (values (11, 'a')) as sq;
> select column1 from T1;
Plan("Table or CTE with name 'T1' not found")
```
**Expected behavior**
```console
> create table t1 as select * from (values (11, 'a')) as sq;
> select column1 from T1;
+---------+
| column1 |
+---------+
| 11 |
+---------+
> select column1 from "T1";
Plan("Table or CTE with name 'T1' not found")
```
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