使用Oracle10g将列放入行中

Question

我正在使用Oracle 10g，我想将一行转换为一列。

我有这样的数据：

ID | HOMEADD | HOMETEL | WORKADD | WORKTEL
------------------------------------------
1  | HOME1    | 1234   | WORK1   | 4321

我怎样才能得到这样的结果：

ID | TYPE | ADDRESS | TEL
---------------------------
1  | HOME | HOME1   | 1234
1  | WORK | WORK1   | 4321

有没有办法使用10g进行UNPIVOT？

Answer 1

您可以使用“UNION”轻松实现。

create table table1 (id number, homeadd varchar2(500), hometel varchar2(50), workadd varchar2(500), worktel varchar2(50));
insert into table1 values (1,'HOME1',1234,'WORK1',4321);
select  id, 'home' as type, homeadd as address, hometel as tel from table1
union all
select id, 'work' , workadd, worktel from table1;

完整脚本：

mysql> CREATE TRIGGER ins_transaction BEFORE INSERT ON account
    -> FOR EACH ROW PRECEDES ins_sum
    -> SET
    -> @deposits = @deposits + IF(NEW.amount>0,NEW.amount,0),
    -> @withdrawals = @withdrawals + IF(NEW.amount<0,-NEW.amount,0);