oracle Update a table with data from another table UPDATEtable1 t1SET(name,desc)=(SELECTt2.name, t2.descFROMtable2 t2WHEREt1.id=t2.id)WHEREEXISTS(SELECT1FROMtable2 t2WHEREt1.id=t2.id ) Assuming thejoinresultsinakey-preservedview, you could alsoUPDATE(SELECTt1.id, t1.name name1, t1.descdesc1, t2.name name...
oracle文章分类 UPDATEtable1 t1SET(name,desc)=(SELECT, t2.descFROMtable2 t2WHERE=)WHEREEXISTS(SELECT1FROMtable2 t2WHERE=) Assuming thejoinresultsinakey-preservedview, you could alsoUPDATE(SELECT, name1, t1.descdesc1, name2, t2.descdesc2FROMtable1 t1, table2 t2WHERE=)SETname1=name2, de...
oracle中用一个table update另一个table的写法 Shally @ 2004-11-05 12:54update test a set (a.prdn_st,avg_yield)=(select b.prd_st,b.avg_yield from test11 b where a.prd_no=b.prd_no and a.plant=b.plant ) 但是需要注意的是必须要一对一,否则oracle会报错: ORA-01427: single-row ...
This lock, also called a subexclusive table lock (SX), generally indicates that the transaction holding the lock has updated table rows or issued SELECT ... FOR UPDATE. An SX lock allows other transactions to query, insert, update, delete, or lock rows concurrently in the same table. There...
Oracle 会自动维护分区索引,对于全局索引,如果在对分区表操作时,没有指定update index,则会导致全局索引失效,需要重建。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 SQL>select owner,index_name,table_name,status from dba_indexes whereINDEX_NAME=‘IX_PDBA_GLOBAL’;owner index_name table_name stat...
table1的field1和table2的field1将需要建立主键或唯一索引才行 关于ORACLE的UPDATE更新多表的问题-电脑资料 关于Oracle的UPDATE更新多表的问题 有以下几种方式可以实现: 一种是: update table1 set (field1,field2...) = (Select Field1,field2... from table2 where table1.field1=table2.field1) where ...
PLAN_TABLE DBA_SOURCE_ALL NLS_DATABASE_PARAMETERS NLS_INSTANCE_PARAMETERS NLS_SESSION_PARAMETERS 其他短名称视图 DICTIONARY DICT COLS IND OBJ TAB DUAL (For 2.0 and above) 动态性能视图: GV$, V$ [GV,V]$DATABASE -- V$DATABASE 查看当前库, GV$DATABASE 查看所有库 ...
在INSERT/UPDATE/MERGE/DELETE 语句中支持子查询分解子句 在多路径或循环引用的情况下,ON DELETE SET NULL 子句的转换消息 优化了从动态 SQL 字符串中创建的游标的转换过程。 将ODP.NET 更新到 v19.8 SSMA v8.11 SSMA for Oracle 的 v8.11 版本包含以下更改: 支持INSERT ... VALUES 语句中的子查询 改进了 CO...
Get rows This operation gets rows from a table. Get tables This operation gets tables from a database. Insert row This operation inserts a new row into a table. Update row This operation updates an existing row in a table.Delete rowOperation...
crate table 表名 ( --结构); insert into 表名 as select ... from ... ; --向表中插入一个结果集 修改数据 update 更新 语法: update 表名 set 列名=值, 列名=值 ... where 条件 ; 删除数据 delete 删除 语法: delete from 表名 where 条件; ...