From ea28c48b4eab4d4ef1dddb54f2f19685b5e2f36b Mon Sep 17 00:00:00 2001 From: xiangwb Date: Sat, 16 Dec 2017 17:19:48 +0800 Subject: [PATCH] sql demo --- boot-service/src/main/java/com/xwbing/demo/oracle/day02.sql | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/boot-service/src/main/java/com/xwbing/demo/oracle/day02.sql b/boot-service/src/main/java/com/xwbing/demo/oracle/day02.sql index 7e38294..c1cab3c 100644 --- a/boot-service/src/main/java/com/xwbing/demo/oracle/day02.sql +++ b/boot-service/src/main/java/com/xwbing/demo/oracle/day02.sql @@ -161,6 +161,6 @@ SELECT ENAME,SAL,SAL+IFNULL(BOUNS,0) FROM EMP_XWBING;//MYSQL NVL2(P1,P2,P3) 若p1不为NULL值为p2,p1为NULL值为p3 查看每个员工的奖金情况? SELECT ENAME,SAL,NVL2(BOUNS,'有奖金','无奖金') FROM EMP_XWBING; -IF(ISNULL(p1),p2,p3) 若p1为null -SELECT ENAME,SAL,IF(ISNULL(BOUNS),'无奖金','有奖金') FROM EMP_XWBING;//MYSQL ISNULL(字段) true返回1 +IF(ISNULL(p1),p2,p3) 若p1为null值为p2,p1不为null值为p3 //MYSQL ISNULL(字段) true返回1 +SELECT ENAME,SAL,IF(ISNULL(BOUNS),'无奖金','有奖金') FROM EMP_XWBING;