EXPLAIN PLAN FOR SELECT * from * where.... 再执行: select * from table(dbms_xplan.display) 方法二: 这种方式更简单,把SQL框起来点按钮就行了。 附:Oracle Explain Plan中各种信息的含义: Plan hash value是该语句的哈希值。SQL 语句和执行计划会存储在库缓存中,
方法一: 比如要查看解释计划的SQL是:select * from hy_emp 那么在输入窗口输入: EXPLAIN PLAN FOR select * from hy_emp 之后执行,输出窗口会出现 Explained. 字样,如下图: 之后执行select * from table(dbms_xplan.display); 如下: 总结步骤如下: 执行: EXPLAIN PLAN FOR SELECT * from * where... 再...
SELECT * from * where... 再执行: select * from table(dbms_xplan.display) 方法二: 这种方式更简单,把SQL框起来点按钮就行了。 附:Oracle Explain Plan中各种信息的含义: Plan hash value是该语句的哈希值。SQL 语句和执行计划会存储在库缓存中,哈希值相同的语句可以重用已有的执行计划,也就是软解析; Id...
Hello All, I am planning to get explain plan for the below statement from sql developer but it errors out with error "ORA-22905: cannot access rows from a non-nested table item". Can someone let me know the solution to this issue if it exists? Definition of n...
在执行的sql前面加上EXPLAIN PLAN FOR SQL>EXPLAINPLANFORSELECT*FROMEMP; 已解释。 SQL>SELECTplan_table_outputFROMTABLE(DBMS_XPLAN.DISPLAY('PLAN_TABLE')); 或者: SQL>select*fromtable(dbms_xplan.display); 1.3 使用PL/SQL Developer,Navicat, Toad等客户端工具 ...
SQL> 1.2使用SQL SQL>EXPLAIN PLAN FOR sql语句; SQL>SELECT plan_table_output FROM TABLE(DBMS_XPLAN.DISPLAY('PLAN_TABLE')); 示例: SQL>EXPLAIN PLAN FOR SELECT * FROM DAVE; 已解释。 SQL>SELECT plan_table_output FROM TABLE(DBMS_XPLAN.DISPLAY('PLAN_TABLE')); ...
Generating the Oracle Explain Plan Type SQL into editor, hit the Explain Plan button. The plan will display below in the ‘Explain Plan’ panel. Now before we go any farther, let me say that if you liked the old plan, you can keep your plan. ...
So for version 4.0 of SQL Developer, when you’re in the worksheet and you want to see a plan, you now have the option to look at the plans in V$SQL_PLAN for your query. From thedocs: After the statement has executed, you can display the plan by querying the V$SQL_PLAN vie...
1.2使用SQL SQL>EXPLAIN PLAN FOR sql语句; SQL>SELECT plan_table_output FROM TABLE(DBMS_XPLAN.DISPLAY('PLAN_TABLE')); 示例: SQL>EXPLAIN PLAN FOR SELECT * FROM DAVE; 已解释。 SQL>SELECT plan_table_output FROM TABLE(DBMS_XPLAN.DISPLAY('PLAN_TABLE')); ...
SQL> 1.2使用SQL SQL>EXPLAIN PLAN FOR sql语句; SQL>SELECT plan_table_output FROM TABLE(DBMS_XPLAN.DISPLAY('PLAN_TABLE')); 示例: SQL>EXPLAIN PLAN FOR SELECT * FROM DAVE; 已解释。 SQL>SELECT plan_table_output FROM TABLE(DBMS_XPLAN.DISPLAY('PLAN_TABLE')); ...