jonahgao commented on issue #13649:
URL: https://github.com/apache/datafusion/issues/13649#issuecomment-2519430082
Do you enclose the column name in quotes when creating the table? similar to
the table `t2` in the example below.
```sh
DataFusion CLI v43.0.0
> create table t1(userId text);
0 row(s) fetched.
Elapsed 0.012 seconds.
> select userid from t1;
+--------+
| userid |
+--------+
+--------+
0 row(s) fetched.
Elapsed 0.006 seconds.
> create table t2("userId" text);
0 row(s) fetched.
Elapsed 0.012 seconds.
> select userid from t2;
Schema error: No field named userid. Valid fields are t2."userId".
```
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