Wolfgang

_PostgreSQL_ treats unquoted identifiers as lowercase, but the xhgui schema creates columns with specific case (e.g., `SERVER` in uppercase). This causes SQL errors when filtering results: ``` SQLSTATE[42703]: Undefined column:...

## Problem _xhgui_ fails with _PostgreSQL_ databases when filtering or viewing traces, showing: ``` SQLSTATE[42703]: Undefined column: column "server" does not exist ``` PostgreSQL treats unquoted identifiers as lowercase, but...