select * from s_user t where t.user_name like '%z%'
查詢、刪除某個字段是空空的
select * from s_user t where t.user_pwd is null
select * from s_user t where t.user_name like '%z%'
select * from s_user t where t.user_pwd is null
1.查找當前表級鎖的SQL如下:select sess.sid, sess.serial#, lo.oracle_username,
//1.數據結構:表:stu_list 主鍵ID,姓名,語文,數學,英語 1 ,張三, 80, 90, 70 2 ,李四,