(2)解析游标(dbms_sql.parse) Parse cursor: A SQL statement is associated with thecursor. Its parsed representation that includes the execution plan (whichdescribes how the SQL engine will execute the SQL statement) is loaded in theshared pool, specifically, in the library cache. The structure i...
dbms_output.put_line('姓名:'||v_ename||',岗位:'||v_job||',工资:'||v_sal); END LOOP; CLOSE emp_cursor; END; / --- 15-2:使用pl/sql纪录变量接收游标数据 DECLARE CURSOR emp_cursor IS SELECT ename,sal FROM emp ORDER BY sal DESC; emp_record emp_cursor%ROWTYPE; BEGIN OPEN emp_...
(2)解析游标(dbms_sql.parse) Parse cursor: A SQL statement is associated with thecursor. Its parsed representation that includes the execution plan (whichdescribes how the SQL engine will execute the SQL statement) is loaded in theshared pool, specifically, in the library cache. The structure i...
dbms_output.put_line('the Policy is updated successfully.');commit;else dbms_output.put_line('...
(1)打开游标(dbms_sql.open_cursor) Open cursor: A memory structure for the cursor isallocated in the server-side private memory of the server process associatedwith the session, the user global area (UGA). Note that no SQL statement isassociated with the cursor yet. ...
dbms_xplan.display_cursor 1) sql tunning asking01 Note: example for reading execution plan, dbms_xplan.display_cursor('sql_id',child_number,'mode') 1@@@ sql script [oracle@station78 ~]$ sqlplus / as sysdba; SQL*Plus: Release 11.2.0.1.0 Production on Sun Mar 3 13:48:02 2013 ...
dbms_output.put_line('the policy is updated failed.'); end if; end; / 在PL/SQL中run: Sql代码 SQL> the policyisupdated failed. PL/SQLproceduresuccessfully completed 2. 显式Cursor: (1) 对于从数据库中提取多行数据,就需要使用显式Cursor。显式Cursor的属性包含: ...
dbms_output.put_line('the policy is updated failed.'); endif; end; / 在PL/SQL中run: Sql代码 SQL> the policyisupdated failed. PL/SQLproceduresuccessfully completed 2. 显式Cursor: (1) 对于从数据库中提取多行数据,就需要使用显式Cursor。显式Cursor的属性包含: ...
dbms_output.put_line(姓名:||emp_table(i).ename|| ,工资:||emp_table(i).sal); ENDLOOP; CLOSEemp_cursor; END; / 15-4:在游标for循环中引用已定义游标 DECLARE CURSORemp_cursorISSELECTename,hiredateFROMemp ORDERBYhiredateDESC; BEGIN FORemp_recordINemp_cursorLOOP dbms_output.put_line(姓名:|...
dbms_output.put_line('the policy is updated failed.'); end if; end; 在PL/SQL中run: SQL> the policy is updated failed. PL/SQL procedure successfully completed 2. 显式Cursor: (1) 对于从数据库中提取多行数据,就需要使用显式Cursor。显式Cursor的属性包含: ...