CREATE PROCEDURE sp_table_records ( table_name in VARCHAR2 --变量有in/ out/ in out ) AS sql VARCHAR2(500); BEGIN sql := ' SELECT * FROM ' || table_name; -- --或者 /* select concat(sql,' SELECT * FROM ') from dual; select concat(sql,table_name) from dual; */ --这里要调用包来执行SQL了吧。 END sp_table_records;
pl/sql怎么返回数据集? CREATE OR REPLACE PACKAGE pkg_test AS TYPE myrctype IS REF CURSOR; PROCEDURE get (p_id NUMBER, p_rc OUT myrctype); END pkg_test; /CREATE OR REPLACE PACKAGE BODY pkg_test AS PROCEDURE get (p_id NUMBER, p_rc OUT myrctype) IS sqlstr VARCHAR2 (500); BEGIN IF p_id = 0 THEN OPEN p_rc FOR SELECT ID, NAME, sex, address, postcode, birthday FROM student; ELSE sqlstr := 'select id,name,sex,address,postcode,birthday from student where id=:w_id'; OPEN p_rc FOR sqlstr USING p_id; END IF; END get; END pkg_test; /
(
table_name in VARCHAR2 --变量有in/ out/ in out
)
AS
sql VARCHAR2(500);
BEGIN
sql := ' SELECT * FROM ' || table_name;
--
--或者
/*
select concat(sql,' SELECT * FROM ') from dual;
select concat(sql,table_name) from dual;
*/
--这里要调用包来执行SQL了吧。
END sp_table_records;
CREATE OR REPLACE PACKAGE pkg_test
AS
TYPE myrctype IS REF CURSOR; PROCEDURE get (p_id NUMBER, p_rc OUT myrctype);
END pkg_test;
/CREATE OR REPLACE PACKAGE BODY pkg_test
AS
PROCEDURE get (p_id NUMBER, p_rc OUT myrctype)
IS
sqlstr VARCHAR2 (500);
BEGIN
IF p_id = 0 THEN
OPEN p_rc FOR
SELECT ID, NAME, sex, address, postcode, birthday
FROM student;
ELSE
sqlstr :=
'select id,name,sex,address,postcode,birthday
from student where id=:w_id';
OPEN p_rc FOR sqlstr USING p_id;
END IF;
END get;
END pkg_test;
/
v_sql varchar2(100);
v_sql := ...;
execute immediate v_sql; --这样v_sql 就能执行了。
--还可以用into 了句
execute immediate v_sql into 变量名 来得到执行结果。
CREATE PROCEDURE sp_table_records(table_name in VARCHAR2)
AS
sqlstr VARCHAR(500)
BEGIN
sqlstr:= ' SELECT * FROM ' + table_name; execute immediate sqlstr;
END;