Describe the bug
Since we claim postgresql dialect compatibility, table identifiers in SQL should be normalized to lowercase unless quoted.
To Reproduce
> 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
> 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")