这里用一个实例来演示PostgreSQL存储过程如何返回数据集。
1、首先准备数据表
//member_category
create table member_category(id serial, name text, discount_rate real, base_integral integer);
alter table member_category add primary key(id);
alter table member_category add check(name<>'');
//member
create table member(id serial, member_num text, name text, category_id integer, account numeric(16,2), integral integer, phone text, birthday date, qq integer, email text, status integer, address text, tip text, start_date date, valid_date integer, password text, creator integer, store_name text);
alter table member add primary key(id);
alter table member add foreign key(creator) references employee;
alter table member add foreign key(category_id) references member_category;
alter table member add onaccount int;
alter table member add onaccount int;
alter table member add store_name text;
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2、插入测试数据
insert into member_category(name, discount_rate, base_integral) values('白金会员', 6.5, 10000);
insert into member_category(name, discount_rate, base_integral) values('高级会员', 7.5, 1000);
insert into member_category(name, discount_rate, base_integral) values('中级会员', 8.5, 100);
insert into member_category(name, discount_rate, base_integral) values('普通会员', 9.5, 10);
insert into member(member_num, name, category_id, account, integral, phone, birthday, qq, email, onaccount, status, address, tip, start_date, valid_date, password, store_name) values('1000001', 'wuyilun', 1, 100000.00, 100000, 18814117777, '1990-12-12', 12345678, '123456@qq.com', 0, 1, 'B3-440', '超白金会员,一切免单', '2014-01-15', 1000000, 12345, '华南理工门店');
insert into member(member_num, name, category_id, account, integral, phone, birthday, qq, email, onaccount, status, address, tip, start_date, valid_date, password, store_name) values('1000002', '李小路', 2, 1000.00, 100000, 188141177234, '1990-12-12', 12345678, '123456@qq.com', 0, 1, 'B3-444', '...', '2014-01-15', 1000000, 12345, '华南理工门店');
insert into member(member_num, name, category_id, account, integral, phone, birthday, qq, email, onaccount, status, address, tip, start_date, valid_date, password, store_name) values('1000003', '洪金包', 3, 1000.00, 100000, 18814117234, '1990-12-12', 12345678, '123456@qq.com', 0, 1, 'B3-443', '...', '2014-01-15', 1000000, 12345, '华南理工门店');
insert into member(member_num, name, category_id, account, integral, phone, birthday, qq, email, onaccount, status, address, tip, start_date, valid_date, password, store_name) values('1000004', '成龙', 4, 100.00, 100000, 18814117723, '1990-12-12', 12345678, '123456@qq.com', 0, 1, 'B3-442', '...', '2014-01-15', 1000000, 12345, '华南理工门店');
insert into member(member_num, name, category_id, account, integral, phone, birthday, qq, email, onaccount, status, address, tip, start_date, valid_date, password, store_name) values('1000005', '范兵兵', 4, 100.00, 100000, 18814117327, '1990-12-12', 12345678, '123456@qq.com', 0, 1, 'B3-441', '...', '2014-01-15', 1000000, 12345, '华南理工门店');
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3、创建存储过程
--调用存储过程f_get_member_info, 返回会员的所有信息
--memberType:会员类型 status:会员状态 findCondition:查询条件(卡号/电话/姓名) store_name:商店名称
create or replace function f_get_member_info(memberType int, status int, findCondition text, store_name text) returns setof record as
$$
declare
rec record;
begin
for rec in EXECUTE 'select m.member_num, m.name, m_t.name, m_t.discount_rate, m.account, m.integral, m.phone, m.birthday, m.qq, m.email, m.onAccount, m.status, m.address, m.tip, m.start_date, m.valid_date, m.store_name from member m, member_category m_t where m.category_id = m_t.id and m_t.id = '|| memberType ||' and m.status = '|| status ||' and m.store_name = '''|| store_name ||''' and (m.member_num like ''%'|| findCondition ||'%'' or m.name like ''%'|| findCondition ||'%'' or m.phone like ''%'|| findCondition ||'%'');' loop
return next rec;
end loop;
return;
end
$$
language 'plpgsql';
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4、调用存储过程
--调用存储过程f_get_member_info示例
select * from f_get_member_info(4, 1, '', '华南理工门店') as member(member_num text,mname text,name text,discount_rate real,account numeric(16,2),integral int,phone text,birthday date,qq int,email text,onAccount int,status int,address text,tip text,start_date date,valid_date int,store_nam text);
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5、测试结果
