06 2019 档案

遍历List 中 Map 的值
摘要：实现思路:List list = new ArrayList(); Map map = new HashMap(); for(i=0;i> list = economicMappers.selectKsqyData();for (int i = 0; i map = list.get(i);//遍历单挑的数据 for (String key : map.keySet()) { if (... 阅读全文
posted @ 2019-06-06 17:03 胖头陀春天 阅读(1773) 评论(0) 推荐(0) 编辑
查询MySQL中某个数据库中有多少张表
摘要：SELECT COUNT(*) TABLES, table_schema FROM information_schema.TABLES WHERE table_schema = '数据库' GROUP BY table_schema; SELECT COUNT(*) TABLES, table_sc 阅读全文
posted @ 2019-06-03 17:11 胖头陀春天 阅读(8581) 评论(2) 推荐(0) 编辑