declarel_sql varchar2(4000):='select * from hr.regions';l_row hr.regions%rowtype;typecurisrefcursor;curs cur;beginopencursforl_sql;loopfetchcursintol_row;exitwhencurs%notfound;dbms_output.put_line(l_row.region_
the dynamic PL/SQL block is an anonymous PL/SQL block that invokes a subprogram that has a formal parameter of the PL/SQL (but not SQL) data type RECORD. The record type is declared in a package specification, and the subprogram is declared in the package specification and defined in the...
2、WHILE...LOOP结构 WHILE...LOOP结构和基本的LOOP语句不同,它本身可以结束LOOP循环。WHILE关键词后面需要有布尔表达式,当WHILE后面的布尔表达式为TRUE时,则循环体重的语句序列被执行1次,然后会重新判断WHILE后面的表达式是否为TRUE,只有当WHILE后的布尔表达式为FALSE时,才结束整个LOOP循环。 该语句结构的相关语法如下:...
LOOP、EXIT和EXIT WHEN、END LOOP 循环控制的三种类型: LOOP -基本循环 WHILE -根据条件循环 FOR -固定次数的循环 create table T_TEST ( id number(5), num number(10) ); 1. 2. 3. 4. 5. LOOP 语法 LOOP sequence_of_statements END LOOP; 1. 2. 3. 4. 5. 示例 DECLARE v_count NUMBER(5)...
Oracle中的三种循环(For、While、Loop) GOTO用法,以下是SQL源码: DECLARE x number;BEGIN x := 0; <<repeat_loop>> --循环点 x := x + 1; DBMS_OUTPUT.PUT_LINE(X); IF x < 9 THEN --当x的值小于9时,就goto到repeat_loop GOTO repeat_loop; END IF;END;...
This chapter shows you how to use Oracle Dynamic SQL, an advanced programming technique that adds flexibility and functionality to your applications. You will learn four methods for writing programs that accept and process SQL statements at run time. This chapter contains the following topics:...
1)、概述 使用forall语句,可允许在动态SQL语句中为输入变量同时提供多个数据, 但forall语句只适用于动态的insert\update\delete语句, 不适用于动态select语句,并且forall语句是和execute immediate结合使用的。 2)、语法 forall index in lower bound…upper bound execute immediate dynamic_name using bind_name | ...
Oracle DBMS_SQL Version 10.2 General Note:DMBS_SQL is the traditional form of dynamic SQL in Oracle. For most purposes native dynamic sql (NDS) will suffice but there are some things the DBMS_SQL package does that can not be done any other way. This page emphasizes those areas where ther...
execute immediate vSqlStrBULKCOLLECTINTOl_data;vIndxLyt:='';FORiINl_data.FIRST..l_data.LASTLOOPvIndxLyt:=vIndxLyt||l_data(i).rows_per_block||' - '||l_data(i).cnt_blocks||chr(10);ENDLOOP;selectcount(*)into vCnt from index_log where owner=aIndexOwner and index_name=aIndexName...
LOOP display 'Employee number? '; read emp_number; IF emp_number = 0 THEN exit loop; EXEC ORACLE OPTION (HOLD_CURSOR=YES); EXEC SQL SELECT ENAME, SAL INTO :emp_name, :salary FROM EMP WHERE EMPNO = :emp_number; display 'Salary for ', emp_name, ' is ', salary; ENDLOOP; ... ...