text: -- Constraint: FKey_$%{}[]()&*^!@"'`\/#
  
  -- ALTER TABLE testschema.test_second_table DROP CONSTRAINT "FKey_$%{}[]()&*^!@""'`\/#";
  
  ALTER TABLE testschema.test_second_table
      ADD CONSTRAINT "FKey_$%{}[]()&*^!@""'`\/#" FOREIGN KEY (so_id)
      REFERENCES testschema.test_first_table (id) MATCH SIMPLE
      ON UPDATE SET NULL
      ON DELETE SET NULL
      NOT VALID;
  