WHERE NOT EXISTS ( SELECT 1 FROM T_S_TASK_MONITOR_LOG WHERE START_TIME > TBL.startTime AND TBL.ID = TASKCONFIGID ) order by startTime desc
SELECT 列名 FROM 表名 WHERE NOT EXISTS (子查询) 其中,子查询是一个嵌套在WHERE NOT EXISTS语句中的查询,它用于检查是否存在满足特定条件的记录。如果子查询返回的结果集为空,即没有记录满足条件,那么WHERE NOT EXISTS条件将返回真,否则返回假。 Where not exists条件语法的优势在于它可以方便地进行复杂的条件判断...
SELECT where not exists语句的语法如下: 代码语言:txt 复制 SELECT column1, column2, ... FROM table1 WHERE NOT EXISTS (SELECT column1 FROM table2 WHERE condition); 其中,table1和table2是查询的表,column1, column2, ...是要返回的列,condition是一个可选的条件用于限制查询。
SQL语句关联删除delete d from tb_clfb dwhere not exists( select 1 from ( select c.CAR_NO,a.r
insert into 和 where not exists 错误的语法 INSERTINTO[dbo].[geo_asso_type]([geo_asso_type_id],[bound_asso_type],[updated_date])VALUES(11,'Province to City',GETDATE()WHERENOTEXISTS(SELECT1FROM[dbo].[geo_asso_type]WHERE[geo_asso_type_id]=11)...
"WHERE NOT EXISTS"是SQL查询中的一个子句,用于检查一个表是否存在满足指定条件的记录。它常用于查询那些在另一个表中没有匹配的记录。 它的语法如下: ``` SELECT column1, column2, ... FROM table1 WHERE NOT EXISTS (SELECT column1 FROM table2 WHERE condition); ``` 其中: - `column1, column2,...
extremely slow: WHERE not exists (select 1 from... failed because it contains a derived or constant field. Failed to retrieve data for this request. Failed to update database because the database is read-only. Failure when converting character string to uniqueidentifier fast way to join on "...
0)select name from employee where name not in (select name from student) select name from employee where not exists (select name from student) 第一句SQL语句的执行效率不如第二句。 通过使用EXISTS,Oracle会首先检查主查询,然后运行子查询直到它找到第一个匹配项,这就节省了时间。
where not exists (select * from 选课 where 课程.课程号=选课.课程号 )相关知识点: 试题来源: 解析 从教学库中查询出学生号为@s1旳学生所选修、而学生号为@s2旳学生没有选修旳所有课程。结果一 题目 select *From课程Wherenotexists(select *From 选课Where 课程.课程号=选课.课程号) 答案 从教学库中查询...
How can I write a "not exists" query in HQL? I am trying to get an HQL not exists query which returns the same results as this Oracle SQL query: select*fromSCHOOL awherenotexists(select1fromSTUDENT bwhereB.SCHOOL_ID=a.idandB.STATUS_IDnotin(0,1,2,3,4)) ...