Oracle 动态SQL有两种写法：用 DBMS_SQL 或 execute immediate，建议使用后者。试验步骤如下：1. DDL 和 DML/**//*** DDL ***/begin EXECUTE IMMEDIATE 'drop table temp_1'; EXECUTE IMMEDIATE 'create table temp_1(name varchar2(8))'; end; /**//*** DML ***/declare v_1 varchar2(8); v_2 varchar2(10); str varchar2(50); begin v_1:='测试人员'; v_2:='北京'; str := 'INSERT INTO test (name ,address) VALUES (:1, :2)'; EXECUTE IMMEDIATE str USING v_1, v_2; commit; end; 2. 返回单条结果declare str varchar2(500); c_1 varchar2(10); r_1 test%rowtype; begin c_1:='测试人员'; str:='select * from test where name=:c WHERE ROWNUM=1'; execute immediate str into r_1 using c_1; DBMS_OUTPUT.PUT_LINE(R_1.NAME||R_1.ADDRESS); end ; 3. 返回结果集CREATE OR REPLACE package pkg_test as /**//* 定义ref cursor类型 不加return类型，为弱类型，允许动态sql查询， 否则为强类型，无法使用动态sql查询; */ type myrctype is ref cursor; --函数申明 function get(intID number) return myrctype; end pkg_test; / CREATE OR REPLACE package body pkg_test as --函数体 function get(intID number) return myrctype is rc myrctype; --定义ref cursor变量 sqlstr varchar2(500); begin if intID=0 then --静态测试，直接用select语句直接返回结果 open rc for select id,name,sex,address,postcode,birthday from student; else --动态sql赋值，用:w_id来申明该变量从外部获得 sqlstr := 'select id,name,sex,address,postcode,birthday from student where id=:w_id'; --动态测试，用sqlstr字符串返回结果，用using关键词传递参数 open rc for sqlstr using intid; end if; return rc; end get; end pkg_test; /
