declarel_sqlvarchar2(123);--variable that contains a queryl_c sys_refcursor;--cursor variable(weak cursor).l_res your_table%rowtype;--variable containing fetching databeginl_sql :='select * from your_table';--Open the cursor and fetching data explicitly--in the LOOP.openl_cforl_sql; ...
This Oracle tutorial explains how to use theCURSOR FOR LOOPin Oracle with syntax and examples. Description You would use a CURSOR FOR LOOP when you want to fetch and process every record in a cursor. The CURSOR FOR LOOP will terminate when all of the records in the cursor have been fetche...
You would use aCURSOR FOR Loopwhen you want to fetch and process every record in a cursor. TheCURSOR FOR Loopwill terminate when all of the records in the cursor have been fetched. 译:当你每次想通过cursor来对每条记录进行取及操作时,就可以使用CURSOR FOR Loop。当cursor中所有的记录都取后,CUR...
declarel_sqlvarchar2(123);--variable that contains a queryl_c sys_refcursor;--cursor variable(weak cursor).l_res your_table%rowtype;--variable containing fetching databeginl_sql :='select * from your_table';--Open the cursor and fetching data explicitly--in the LOOP.openl_cforl_sql; ...
Oracle/PLSQL: FOR Loop: http://www.techonthenet.com/oracle/loops/for_loop.php Loops with PL/SQL: http://www.adp-gmbh.ch/ora/plsql/loops.html The syntax for the FOR Loop is: FOR loop_counter IN [REV ...
CURSOR cur IS是定义一个游标,然后把游标里定义的查询语句存储到游标里 因为查询语句查出来的数据往往是几条记录 但是你用的时候缺只能一条一条取出来用 这时游标的好处就体现出来了 游标存储时 存的是几条记录 但是读取时 他是一条记录一条记录读取的 然后再使用FOR IN循环一下 就可以将你存储在...
oracle pl sql for循环游标 EMP表在SCOTT用户下。用SCOTT/TIGER登录。 代码: DECLARE CURSOR C_JOB IS SELECT EMPNO, ENAME, JOB, SAL FROM EMP WHERE JOB = 'MANAGER'; C_ROW C_JOB%ROWTYPE; BEGIN FOR C_ROW IN C_JOB LOOP DBMS_OUTPUT.put_line(C_ROW.EMPNO || '-' || C_ROW.ENAME || '...
oracle中open cursor for 和for cursor in的区别如下:open cursor for 是直接打开游标查询结果,适用于单表查询,结果集一般不会太大。for cursor in是从大量数据中循环获取满足条件的记录,放入游标1、open cursor for 用法:CREATE OR REPLACE PROCEDURE AMLS.TEST(C_RES OUT SYS_REFCURSOR) ASBEGIN OPEN C_RES ...
In this case, the cursorFOR LOOPdeclares, opens, fetches from, and closes an implicit cursor. However, the implicit cursor is internal; therefore, you cannot reference it. Note that Oracle Database automatically optimizes a cursorFOR LOOPto work similarly to aBULK COLLECTquery. Although your co...
不要将参数命名为列名；使用一些前缀，例如。par_或者p_在cursor for循环中，不能有两个同名的列(...