sql example 6 – update
insert into user1 (id, username) values (99, ‘test‘); update user1 set username=‘I am 99‘ where id=99; select * from user1;
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insert into user1 (id, username) values (99, ‘test‘); update user1 set username=‘I am 99‘ where id=99; select * from user1;
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原文地址：http://www.cnblogs.com/sunznx/p/4575108.html
