if you have already created an association between one or more columnsof a temporary table and a user-defined statistics type, then you canuse ANALYZE to collect the user-defined statistics on the temporarytable.
If you want tovalidate a partitioned table, then you must have the INSERT objectprivilege on the table into which you list analyzed rowids, or you must havethe INSERT ANY TABLE system privilege. 三. Syntax 详细语法如下: ANALYZE TABLE tablenameCOMPUTE|ESTIMATE|DELETE STATISTICS ptnOption options ...
if you have already created an association between one or more columnsof a temporary table and a user-defined statistics type, then you canuse ANALYZE to collect the user-defined statistics on the temporarytable.
Use the ANALYZE statement to collect non-optimizer statistics, for example, to: --使用analyze功能可以收集一些没有进行优化的统计信息,例如: Collect or delete statistics about an index or index partition, table or table partition, --聚集或删除索引或索引分区,表或表分区 index-organized table, cluster...
这篇只看官网对Analyze命令的相关说明。 一.Purpose Use theANALYZEstatement tocollect statistics, for example, to: --使用analyze命令可以收集统计信息,如: (1)Collect ordelete statistics about an index or index partition, table or table partition,index-organized table, cluster, or scalar object attribut...
2) analyze table tableName compute statistics; 执行时间与表的数据量有关 3) select * from all_tables where table_name=' TEMP_TABLE '; 之前为空的部分字段,现在查询已经有值 3. oracle的联机文档描述了analyze的做用: Use the ANALYZE statement to collect non-optimizer statistics, for example, to:...
An example of the ANALYZE TABLE command is shown here: ANALYZE TABLE scott.emp COMPUTE STATISTICS FOR TABLE; When you analyze a table, Oracle populates the following columns in the DBA_TABLES, ALL_TABLES, and USER_TABLES data dictionary views: ...
SQL> analyze table DEPT_COPY2 compute statistics; 查看某个表属于哪个表空间: SQL> select tablespace_name from all_tables where table_name='SYS_EXPORT_FULL_01'; 创建表时指定表空间: SQL>create table a (name varchar(10)) tablespace test; ...
For example, you can analyze a table while other users are updating the table. Oracle implicitly commits the current transaction before and after every DDL statement. Many DDL statements may cause Oracle to recompile or reauthorize schema objects.DDL Statements are...
SCOTT@PROD>create table testasselect*from emp;SCOTT@PROD>insert into test select*from test;SCOTT@PROD>/ 代码语言:javascript 复制 SCOTT@PROD>deletefrom test;SCOTT@PROD>commit; 代码语言:javascript 复制 SCOTT@PROD>analyze table test compute statistics;SCOTT@PROD>selecttable_name,blocks,empty_blocks fr...