随笔分类 -  数据库

关于sql语句和脚本的创建
摘要:declare i integer ; --定义变量 begin i := 1; loop /* 插入数据 */ insert into test (student, username, password )values(concat('100',replace(lpad(i,3),' ','0') 阅读全文
posted @ 2021-01-12 13:41 mandy3651423 阅读(884) 评论(0) 推荐(0)
摘要:SELECT TO_CHAR (to_date(substr(PAY_TIME,12,2), 'hh24'),'hh24') || ':' || LPAD ( FLOOR (TO_CHAR(TO_DATE(SUBSTR(PAY_TIME,15,2),'mi'), 'mi') / 5) * 5, 2, 阅读全文
posted @ 2020-09-18 14:58 mandy3651423 阅读(155) 评论(0) 推荐(1)
摘要:DECLARE num NUMBER ;BEGIN SELECT COUNT (1) INTO num FROM user_tables WHERE TABLE_NAME = 'LTXGL01' ; IF num = 1 THEN EXECUTE IMMEDIATE 'drop table LTXG 阅读全文
posted @ 2017-04-28 15:41 mandy3651423 阅读(180) 评论(0) 推荐(0)