SQL> create global temporary table t_global_temp(a int) on commit preserve rows; Table created. SQL> insert into t_global_temp values(1); 1 row created. ---提交前查询 SQL> select * from t_global_temp; A --- 1 SQL> select segment_name,segment_type from user_segments where segment_...
SQL> create global temporary table t_global_temp(a int) on commit preserve rows; Table created. SQL> insert into t_global_temp values(1); 1 row created. ---提交前查询 SQL> select * from t_global_temp; A --- 1 SQL> select segment_name,segment_type from user_segments where segment_...
Specify GLOBAL TEMPORARY to indicate that the table is temporary and that its definition is visible to all sessions with appropriate privileges. The data in a temporary table is visible only to the session that inserts the data into the table. When you first create a temporary table, its table...
create table t1 parallel 8 nologging compress as select * from table1; 创建临时表 临时表为事务级,事务提交或回滚时,数据即被删除 create global temporary table t1(name varchar(10)) on commit delete rows; 临时表为会话级,表中数据一致保留直到当前会话结束。 create global temporary table t1(name ...
Global temporary table - The following command is used to compare a table definition in the XDF file wf_local_users_temp.xdf with the definition in the database db_name and run SQL statements to remove the differences so that the object definition in the database matches the definition in ...
SELECT SEGMENT_CREATED,TABLE_NAME FROM USER_TABLES WHERE SEGMENT_CREATED = 'NO'; 延迟段创建的限制条件有: ① 延迟段创建不支持的表类型包括:索引组织表(Index-Organized Tables)、簇表(Clustered Tables)、全局临时表(Global Temporary Tables)、会话级临时表(Session-Specific Temporary Tables)、内部表(Internal...
Global temporary tables store data in the Oracle temporary tablespace. DDL operations on a temporary table are permitted includingALTER TABLE,DROP TABLE, andCREATE INDEX. Temporary tables can’t be partitioned, clustered, or created as index-organized tables. Also, they don’t su...
E、往如下全局临时表(GLOBAL TEMPORARY TABLE)插入数值型记录时,会话表GT_SESS_TAB(DBA_TABLES.DURATION='SYS$SESSION')和事务表GT_TRANS_TAB(DBA_TABLES.DURATION='SYS$TRANSACTION')这2类全局临时表均会生产临时段,且临时段类型为DATA(V$SORT_USAGE.SGTYPE='DATA') INSERT INTO GT_SESS_TAB(TMP_ID) VALUES...
2.copy an existing table sql> create table table_name [logging|nologging] as subquery 3.create temporary table sql> create global temporary table xay_temp as select * from xay; on commit preserve rows/on commit delete rows 4.pctfree = (average row size - initial row size) *100 /average...
2.copy an existing table sql> create table table_name [logging|nologging] as subquery 3.create temporary table sql> create global temporary table xay_temp as select * from xay; on commit preserve rows/on commit delete rows 4.pctfree = (average row size - initial row size) *100 /average...