摘要:
import java.util.*; class Fruit { public String toString() { return "Fruit"; } } class Apple extends Fruit { public String toString(){ return "Apple"; 阅读全文
摘要:
-- 获取所有table名 SELECT tablename FROM pg_tables WHERE tablename NOT LIKE 'pg%' AND tablename NOT LIKE 'sql_%' AND schemaname = 'public' ORDER BY tablena 阅读全文