婋麵䔇变傴镖儖录傺劉婺 test_table 䔇臘臖臘橬婴婻䌂傋彖彆婺 int4 启 text 䔇庖枕 cola 启 colb 䇽劯劏臖臘某噖婴臯㔗
create test_table 420 (cola = int4, colb = text) open test_table insert OID=421 ( 1 "value1" ) insert OID=422 ( 2 _null_ ) close test_table