Temporary tables are same as permanent tables. Temporary tables are created in temporary database. Temporary Tables are deleted automatically when they are not used for long time. We should make a note that table name begin with '#' is a temporary table
全域暂存表(Global Temporary Tables) 在表格名字前面, 加入两个"#", 比如"##YakHerders", 则表示这是个全域暂存表, 也就是说… cbw0731.pixnet.net|基于6个网页 3. 全域暂存资料表 全域暂存资料表(Global Temporary Tables) SQL Server 2005 降转到 SQL Server 2000 自订SQL Server 2005扩充用 FAQ S… ...
I don't think that counts as a global temp table. I'm already past my bedtime, so I don't have the time to test. But since you have the table in a schema, I would think that the database is in the same database as the source table. Which I guess is fully logged, so ...
SELECT id, description FROM temp2;Code language: SQL (Structured Query Language) (sql) It returned no row because Oracle truncated all rows of the temp2 table after the session ended. Oracle global temporary tables & indexes Oracle allows you to create indexes on global temporary tables. Howeve...
Temp Table 数据的时效性 (1)On Commit DeleteRows: 数据在 Transaction 期间有效,一旦COMMIT后,数据就被自动 TRUNCATE 掉了; SQL> CREATE GLOBAL TEMPORARY TABLE QCUI_Temp_Trans 2 ON COMMIT DELETE ROWS 3 AS 4 SELECT * FROM t_Department;
关于Oracle全局临时表 Global Temporary Tables 的使用 1.创建SQL语句 CREATE GLOBAL TEMPORARY TABLE tablename (columns) [ ON COMMIT PRESERVE | DELETE ROWS ] SQL> create global temporary table emp_temp(eno number) on commit delete rows; -- transaction level duration,事务级别,此为默认选项...
必须存在用户临时表空间,然后才能声明已声明的临时表 (SQLSTATE 42727)。 引用已声明的临时表:已声明的临时表的描述不会显示在数据库目录 (SYSCAT.TABLES) 中;因此,它不是持久的,并且在数据库连接中不可共享。 这意味着,定义了名为table-name的已声明临时表的每个会话都对这个已声明全局临时表提供了自己的唯一描...
This enables any SQL statement in the application process to reference a declared temporary table that has already been defined in that application process. Referring to a declared temporary table in other SQL statements Many SQL statements support declared temporary tables. To refer to a declared ...
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'); TABLE_NAME TEM DURATION --- --- --- TEMP_2 Y SYS$SESSION TEMP_1 Y SYS$TRANSACTION You can't query the temporary...
SQL> select count(*) from session_temp_tab ; COUNT(*) --- 14 SQL> select count(*) from transaction_temp_tab ; COUNT(*) --- 0 当COMMIT之后事务级临时表中的数据自动清除,所以再次查询的时候得到结果为0; SQL> disconnect ; Not logged on SQL> ...