create table t_test
(city varchar2(255) not null,
year number(4) not null,
month number(2) not null,
sell_amount number(26,2)
)comment on table t_test
is '各月世聯在主要核心城市的銷售金額';
comment on column t_test.city
is '城市';
comment on column t_test.sell_amount
is '比如0.42代表42%';
insert into t_test (city, year, month, sell_amount)
values ('深圳', 2010, 5, 1.2);
insert into t_test (city, year, month, sell_amount)
values ('東莞', 2010, 5, .8);
insert into t_test (city, year, month, sell_amount)
values ('佛山', 2010, 5, .9);
insert into t_test (city, year, month, sell_amount)
values ('汕頭', 2010, 5, .22);
insert into t_test (city, year, month, sell_amount)
values ('長沙', 2010, 5, .28);
insert into t_test (city, year, month, sell_amount)
values ('深圳', 2010, 4, 1.1);
insert into t_test (city, year, month, sell_amount)
values ('東莞', 2010, 4, .8);
insert into t_test (city, year, month, sell_amount)
values ('佛山', 2010, 4, .9);
insert into t_test (city, year, month, sell_amount)
values ('廣州', 2010, 4, .67);
insert into t_test (city, year, month, sell_amount)
values ('汕頭', 2010, 4, .22);
insert into t_test (city, year, month, sell_amount)
values ('長沙', 2010, 4, .28);
insert into t_test (city, year, month, sell_amount)
values ('深圳', 2010, 3, .9);
insert into t_test (city, year, month, sell_amount)
values ('佛山', 2010, 3, .9);
insert into t_test (city, year, month, sell_amount)
values ('廣州', 2010, 3, .67);
insert into t_test (city, year, month, sell_amount)
values ('汕頭', 2010, 3, .22);
insert into t_test (city, year, month, sell_amount)
values ('長沙', 2010, 3, .28);
commit;
---儲存過程生成行轉列sql語句
create or replace procedure p_test1 is
cursor csr is
select distinct (city) from t_test;
tmp_km varchar2(400);
str varchar2(4000);
begin
/*select t.year||t.month,
sum(decode(t.city, '深圳',t.sell_amount,0)) 深圳 ,
sum(decode(t.city, '佛山',t.sell_amount,0)) 佛山,
sum(decode(t.city, '東莞',t.sell_amount,0)) 東莞
from t_test t
group by t.month,t.year
*/str := 'select t.year||t.month ';
open csr;
loop fetch csr into tmp_km;
exit when csr%notfound;
str := str || ',sum(decode(t.city, ' || chr(39) || tmp_km || chr(39) ||
',t.sell_amount,0)) ' || tmp_km;
end loop;
str := str || ' from t_test t group by t.month,t.year';
dbms_output.put_line(str);
execute immediate str;
end p_test1;
//生成集合
create or replace procedure p_test1(p_year number,p_cursor out sys_refcursor) is
cursor csr is
select distinct (city) from t_test;
tmp_km varchar2(400);
str varchar2(4000);
begin
/*select t.year||t.month,
sum(decode(t.city, '深圳',t.sell_amount,0)) 深圳 ,
sum(decode(t.city, '佛山',t.sell_amount,0)) 佛山,
sum(decode(t.city, '東莞',t.sell_amount,0)) 東莞
from t_test t
group by t.month,t.year
*/str := 'select t.year||t.month ';
open csr;
loop fetch csr into tmp_km;
exit when csr%notfound;
str := str || ',sum(decode(t.city, ' || chr(39) || tmp_km || chr(39) ||
',t.sell_amount,0)) ' || tmp_km;
end loop;
str := str || ' from t_test t where t.year='||p_year||' group by t.month,t.year';
dbms_output.put_line(str);
open p_cursor for str;
exception
when others then
dbms_output.put_line('error');
close p_cursor;
end p_test1;
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