# pg-make-test This tool extracts a subset of SQL statements which work as expected from Postgres' regression tests located in yql/essentials/tests/postgresql/original/cases. The extracted tests are normally saved into yql/essentials/tests/postgresql/cases. The tests could optionally get patched. For each .sql test file the tool expects a matching .out file(s) in the same dir. For each pair of .sql/.out files the working subset of SQL statements is written to the output dir.