javaEEday07-DML-SQL-update

2026-10-11 11:19:15 +08:00
parent a1bc25eb63
commit eea26bafd0
1 changed files with 8 additions and 1 deletions
@@ -43,3 +43,10 @@ values
    ('wuji3','张无忌3',1,now(),now()),
    ('wuji4','张无忌4',1,now(),now())
 ;
+
+-- DML : 更新数据 - update
+-- 1. 将 tb_emp 表的ID为1员工 姓名name字段更新为 '张四'
+update tb_emp set name = '张四' where id = 1;
+update tb_emp set name = '张四' ;
+-- 2. 将 tb_emp 表的所有员工的入职日期更新为 '2010-01-01'
+update tb_emp set entrydate='2010-01-01',update_time=now();