Implement all TODO test cases for ClickHouse SQL parser#5

kyleconroy merged 1 commit intomainsqlc-dev/doubleclick:mainfrom

claude/implement-test-queries-01PSv1mS8YbGrNsMw4sR4tHEsqlc-dev/doubleclick:claude/implement-test-queries-01PSv1mS8YbGrNsMw4sR4tHECopy head branch name to clipboard