we will see how we could create a temporary table. The temporary table is just like another table but we have to use the keyword ‘GLOBAL TEMPORARY’ in the create table query. For this example, we will create a temporary table named temp_table having...
创建方式1: create global temporary table temp2(id number) on commit delete rows; insert into temp2 values(200); select * from temp2; 创建方式2: create global temporary table temp2 as select id from 另一个表;(默认创建的就是事务级别的) select * from temp2; 这时当你执行了commit和rollbac...
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...
create tablespace userdata;---use OMF status to create tablespace; drop tablespace userdata;---user OMF status to drop tablespace; select * from dba_tablespace/v$tablespace/dba_data_files; /*将表的某分区移动到另一个表空间*/ alter table table_name move partition partition_name tablespace tablespa...
oracle SQL学习总结 1.候选键、主键和外键约束: create table Employee( id int primary key, name char(20), birthday Date, address varchar(30), city varchar(10), sex char(2), salary numeric(10,2), dno int, pno int unique(name,birthday) ...
--拼接关联SQLTARGET_RESULTS :=TARGET_RESULTS||'LEFT JOIN (SELECT DISTINCT '||QUERY_ITEMS||','||TEMP.QUERY_CONTENT||' AS A'||TEMP.ID||' FROM '||TEMP.TABLE_NAME||' WHERE '||TEMP.PARAMETER||') B'||TEMP.ID||' ON '||CONDITIONS;ENDLOOP;--执行建表语句EXECUTEIMMEDIATE TARGET_...
Create global temporary table Temp_user (ID NUMBER(12) Primary key,name varchar2(10)); 笔者建议: 这个创建临时表的语句中,虽然没有显性的指明该表是事务临时表,但是,默认的情况下,若没有指明是什么临时表的话,系统默认是事务临时表。我们要创建事务临时表时,可以不指定关键字。但是,这查看起来比较麻烦。
create table table_name (colimn_name datatype,...) oracle数据库基本语句[2] 一、Oracle数据库操作 1、创建数据库 create database databasename 2、删除数据库 drop database dbname 3、备份数据库 完全备份 exp demo/demo@orclbuffer=1024 file=d: ack.dmp full=y ...
If you ommit "on commit " clause, Oracle will create transaction-sepecif by default. you can query the temporary table info by below sql: select TABLE_NAME, TEMPORARY, DURATION from dba_tables where table_name in ('TEMP_1', 'TEMP_2'); ...
BEGIN EXECUTE IMMEDIATE 'TRUNCATE TABLE schema1.QUERY_TABLE' ; end ; / 输入在过程使用TRUNCATE TABLE DSC不会为动态PL/SQL语句添加模式名称。 CREATE OR REPLACE PROCEDURE schemName.sp_dd_table ( itablename VARCHAR2 ) IS l_table VARCHAR ( 255 ) ; BEGIN l_table :='truncatetable ' || i...