declare v_sal ) :; begin --if you could not see the output in console, you should set output on first use the command in command line : set serveroutput on dbms_output.put_line(v_sal); end;…

declare v_empno scott.emp.empno%type; v_sal scott.emp.sal%type; ) is select t.empno, t.sal from scott.emp t where t.empno = v_empno; begin ); loop fetch cur_emp into v_empno, v_sal; exit when cur_emp%notfound; dbms_output.put_line(v_empno || ' ' || v…

CREATE OR REPLACE PACKAGE BODY temp_package_demo is FUNCTION f_demo(userid NUMBER) RETURN BOOLEAN IS v_temp ); BEGIN INTO v_temp FROM scott.emp WHERE empno = userid; RETURN TRUE; EXCEPTION WHEN NO_DATA_FOUND THEN RETURN FALSE; END; PROCEDURE p_demo_1…

CREATE OR REPLACE PACKAGE temp_package_demo is v_demo ); PROCEDURE p_demo_1(userid NUMBER DEFAULT v_demo, SAL number); FUNCTION f_demo(userid NUMBER) RETURN BOOLEAN; END temp_package_demo;…

declare v_empno scott.emp.empno%type; v_sal scott.emp.sal%type; cursor cur_emp is select t.empno, t.sal from scott.emp t; begin open cur_emp; loop fetch cur_emp into v_empno, v_sal; exit when cur_emp%notfound; dbms_output.put_line(v_empno || ' ' || v…

CREATE OR REPLACE FUNCTION function_name RETURN DATE AS v_date DATE; BEGIN ; dbms_output.put_line(v_date); RETURN v_date; END function_name;…

--PACKAGE CREATE OR REPLACE PACKAGE test_141213 is TYPE type_ref IS record( ENAME ), WORK_CITY ), SAL )); TYPE t_type_ref IS TABLE OF type_ref; FUNCTION retrieve(v_name varchar2) RETURN t_type_ref PIPELINED; END test_141213; -- PACKAGE BODY CREATE OR…

目的:如何在pl/sql中定义基本类型,引用类型,记录型变量? 以下plsql程序用的scott用户的dept,emp表. 定义基本类型的变量 set serveroutput on ; --使用基本类型的变量 declare --定义基本变量类型 --定义基本数据类型 pnumber ,); --字符变量 pname ); --日期类型变量 pdate date; begin pnumber :; DBMS_OUTPUT.PUT_LINE(pnumber); pname := 'Tom'; D…

参考文章:https://www.cnblogs.com/huyong/archive/2011/05/04/2036377.html 在 PL/SQL 程序中,对于处理多行记录的事务经常使用游标来实现 使用有四个步骤:定义.打开.提取.关闭 例子: 09:52:04 SCOTT@std1> DECLARE 09:52:07 2 CURSOR c_cursor 09:52:07 3 IS SELECT ename, sal 09:52:07 4 FROM emp 09:52:07 5 WHERE…

DECLARE v_sql ) := ''; v_count NUMBER; BEGIN v_sql := v_sql || 'select count(1) from scott.emp t'; EXECUTE IMMEDIATE v_sql INTO v_count; dbms_output.put_line(v_count); END;…