如果前导列object_name也是in,因为选择性好,这里也不用第二列,前导列in转为or,调用INLIST ITERATOR: 点击(此处)折叠或打开 select * from t1 where t1.object_name in ('DBA_OBJECTS','DBA_TABLES') and t1.owner in ('SYS','DINGJUN123'); Execution Plan --- Plan hash value: 1236450337 ---...
1. in如何与list绑定: 一个带in子查询的语句相信对很多人来说都是司空见惯了的,例如:「select * from normaltbl_ora where pk in (1,2,3,4)」、「select * from normaltbl_ora where name in (“manhong”,”yihuan”,”gongyangyu”,”yaolingling”) 」。但是如果in的查询字段上没有建立索引或者无...
select * from A where id in(select id from B) 以上查询使用了in语句,in()只执行一次,它查出B表中的所有id字段并缓存起来.之后,检查A表的id是否与B表中的id相等,如果相等则将A表的记录加入结果集中,直到遍历完A表的所有记录. 它的查询过程类似于以下过程 List resultSet=[]; Array A=(select * from...
51CTO博客已为您找到关于oracle sql in list的相关内容,包含IT学习相关文档代码介绍、相关教程视频课程,以及oracle sql in list问答内容。更多oracle sql in list相关解答可以来51CTO博客参与分享和学习,帮助广大IT技术人实现成长和进步。
Try it on LiveSQL.oracle.com Read the latest guidance and start coding. Get started now Try Oracle Cloud Free Tier Build, test, and deploy applications on Oracle Cloud Infrastructure Platform. Try it for free Contact us Interested in learning more? Contact one of our industry-leading expert...
代码语言:sql 复制 LOCKTABLE<表名>[,<表名>]...INEXCLUSIVEMODE[NOWAIT] 独占方式的表级锁也可以在用户执行 DML 语句 INSERT、UPDATE、DELETE时隐含获得。 拥有独占方式表封锁的事务,在出现如下条件之一时,便释放该封锁: ( 1)执行 COMMIT 或 ROLLBACK 语句。 (...
说实话，不知道你想干什么，，，select * from sys_entity_group where id =4270 union all select * from sys_entity_group where id =4270 要这样显示成2条？
SELECT aa, bb, cc FROM AaaaTable T <where> <if test="namesList != null and namesList.size() > 0 "> T.NAME in <foreach collection="namesList" item="name" separator="," open="(" close=")"> #{name} </foreach> </if> ...
Search Loading...
sql>create userprefixuseridentified by externally defaulttablespace system quota 1m on system;sql>grant connect, resource toprefixuser;sql>grant select on v_$sysstat toprefixuser;sql>grant select on v_$archive_dest toprefixuser;sql>grant create session toprefixuser;sql>grant create table toprefix...