统计信息
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编辑 删除
统计信息的备份恢复
SQL> create table t1 as select * from dba_objects; Table created SQL> create table t2 as select * from dba_objects; Table createdSQL> select (select count(*) from t1) t1,(select count(...
-
编辑 删除
统计信息的备份恢复
SQL> create table t1 as select * from dba_objects; Table created SQL> create table t2 as select * from dba_objects; Table createdSQL> select (select count(*) from t1) t1,(select count(...
