求一个行转列的做法

chen870201 2013-05-27 12:13:09

需求，有四个表关联



-- 产品表(备用12345，删除标志，产品主键、产品编码、产品名称、停用标志，增删改时间戳)  

create table FW_PRODUCT

(

  def1         VARCHAR2(50),

  def2         VARCHAR2(50),

  def3         VARCHAR2(50),

  def4         VARCHAR2(50),

  def5         VARCHAR2(50),

  dr           NUMBER(10) default 0,

  pk_fwproduct CHAR(20) not null,

  productcode  VARCHAR2(50),

  productname  VARCHAR2(50),

  stopflag     CHAR(1),

  ts           CHAR(19) default to_char(sysdate,'yyyy-mm-dd hh24:mi:ss')

);



-- 市场表(分析标志，备用12345，删除标志，市场编码，市场名称，产品主键、市场主键，停用标志，增删改时间戳) 

create table FW_MARKET

(

  analyseflag  CHAR(1),

  def1         VARCHAR2(100),

  def2         VARCHAR2(100),

  def3         VARCHAR2(100),

  def4         VARCHAR2(100),

  def5         VARCHAR2(100),

  dr           NUMBER(10) default 0,

  marketcode   VARCHAR2(50) not null,

  marketname   VARCHAR2(50),

  pk_fwproduct CHAR(20),

  pk_market    CHAR(20) not null,

  stopflag     CHAR(1),

  ts           CHAR(19) default to_char(sysdate,'yyyy-mm-dd hh24:mi:ss')

);



-- 报价主表(备用12345，删除标志，报价主键，报价日期，产品名称，增删改时间戳) 

create table FW_PRICE

(

  def1        VARCHAR2(100),

  def2        VARCHAR2(100),

  def3        VARCHAR2(100),

  def4        VARCHAR2(100),

  def5        VARCHAR2(100),

  dr          NUMBER(10) default 0,

  pk_fwprice  CHAR(20) not null,

  pricedate   CHAR(10) not null,

  productname CHAR(20),

  ts          CHAR(19) default to_char(sysdate,'yyyy-mm-dd hh24:mi:ss')

);



-- 报价子表(备用12345，删除标志，报价主表PK，市场PK，报价子表PK，价格，增删改时间戳) 

create table FW_PRICE_B

(

  def1        VARCHAR2(50),

  def2        VARCHAR2(50),

  def3        VARCHAR2(50),

  def4        VARCHAR2(50),

  def5        VARCHAR2(50),

  dr          NUMBER(10) default 0,

  infob       CHAR(20),

  market      CHAR(20),

  pk_fwpriceb CHAR(20) not null,

  price       NUMBER(28,8),

  ts          CHAR(19) default to_char(sysdate,'yyyy-mm-dd hh24:mi:ss')

);



-- 测试数据 

insert into FW_PRODUCT (DEF1, DEF2, DEF3, DEF4, DEF5, DR, PK_FWPRODUCT, PRODUCTCODE, PRODUCTNAME, STOPFLAG, TS)

values (null, null, null, null, null, 0, '1003ZZ1000000000BPAQ', '01', '铝锭', 'N', '2013-05-24 11:59:19');

insert into FW_PRODUCT (DEF1, DEF2, DEF3, DEF4, DEF5, DR, PK_FWPRODUCT, PRODUCTCODE, PRODUCTNAME, STOPFLAG, TS)

values (null, null, null, null, null, 0, '1003ZZ1000000000BPAR', '02', '铝箔', 'N', '2013-05-24 11:59:25');

insert into FW_PRODUCT (DEF1, DEF2, DEF3, DEF4, DEF5, DR, PK_FWPRODUCT, PRODUCTCODE, PRODUCTNAME, STOPFLAG, TS)

values (null, null, null, null, null, 0, '1003ZZ1000000000BPAS', '03', '煤炭', 'N', '2013-05-24 11:59:34');





insert into FW_MARKET (ANALYSEFLAG, DEF1, DEF2, DEF3, DEF4, DEF5, DR, MARKETCODE, MARKETNAME, PK_FWPRODUCT, PK_MARKET, STOPFLAG, TS)

values ('N', null, null, null, null, null, 0, '001', '南方_煤', '1003ZZ1000000000BPAS', '1003ZZ1000000000BPAT', 'N', '2013-05-24 12:00:15');

insert into FW_MARKET (ANALYSEFLAG, DEF1, DEF2, DEF3, DEF4, DEF5, DR, MARKETCODE, MARKETNAME, PK_FWPRODUCT, PK_MARKET, STOPFLAG, TS)

values ('N', null, null, null, null, null, 0, '002', '北方_煤', '1003ZZ1000000000BPAS', '1003ZZ1000000000BPAV', 'N', '2013-05-24 12:12:04');

insert into FW_MARKET (ANALYSEFLAG, DEF1, DEF2, DEF3, DEF4, DEF5, DR, MARKETCODE, MARKETNAME, PK_FWPRODUCT, PK_MARKET, STOPFLAG, TS)

values ('N', null, null, null, null, null, 0, '003', '山西_煤炭', '1003ZZ1000000000BPAS', '1003ZZ1000000000BPAW', 'N', '2013-05-24 12:12:23');

insert into FW_MARKET (ANALYSEFLAG, DEF1, DEF2, DEF3, DEF4, DEF5, DR, MARKETCODE, MARKETNAME, PK_FWPRODUCT, PK_MARKET, STOPFLAG, TS)

values ('N', null, null, null, null, null, 0, '004', '江西_铝', '1003ZZ1000000000BPAQ', '1003ZZ1000000000BPAX', 'N', '2013-05-24 12:13:34');





insert into FW_PRICE (DEF1, DEF2, DEF3, DEF4, DEF5, DR, PK_FWPRICE, PRICEDATE, PRODUCTNAME, TS)

values (null, null, null, null, null, 0, '0001ZZ1000000001H57I', '2013-05-24', '1003ZZ1000000000BPAS', '2013-05-24 19:30:41');

insert into FW_PRICE (DEF1, DEF2, DEF3, DEF4, DEF5, DR, PK_FWPRICE, PRICEDATE, PRODUCTNAME, TS)

values (null, null, null, null, null, 0, '0001ZZ1000000001H57M', '2013-05-24', '1003ZZ1000000000BPAQ', '2013-05-24 19:30:28');

insert into FW_PRICE (DEF1, DEF2, DEF3, DEF4, DEF5, DR, PK_FWPRICE, PRICEDATE, PRODUCTNAME, TS)

values (null, null, null, null, null, 0, '1003ZZ1000000000BXSA', '2013-05-27', '1003ZZ1000000000BPAS', '2013-05-27 10:35:19');

insert into FW_PRICE (DEF1, DEF2, DEF3, DEF4, DEF5, DR, PK_FWPRICE, PRICEDATE, PRODUCTNAME, TS)

values (null, null, null, null, null, 0, '1003ZZ1000000000BXSE', '2013-05-26', '1003ZZ1000000000BPAS', '2013-05-27 10:36:08');

insert into FW_PRICE (DEF1, DEF2, DEF3, DEF4, DEF5, DR, PK_FWPRICE, PRICEDATE, PRODUCTNAME, TS)

values (null, null, null, null, null, 0, '0001ZZ1000000001H5L2', '2013-05-07', '1003ZZ1000000000BPAR', '2013-05-25 01:41:00');

insert into FW_PRICE (DEF1, DEF2, DEF3, DEF4, DEF5, DR, PK_FWPRICE, PRICEDATE, PRODUCTNAME, TS)

values (null, null, null, null, null, 0, '0001ZZ1000000001H5L8', '2013-05-25', '1003ZZ1000000000BPAQ', '2013-05-25 01:48:03');

insert into FW_PRICE (DEF1, DEF2, DEF3, DEF4, DEF5, DR, PK_FWPRICE, PRICEDATE, PRODUCTNAME, TS)

values (null, null, null, null, null, 0, '0001ZZ1000000001H5LD', '2013-05-25', '1003ZZ1000000000BPAS', '2013-05-25 01:49:27');





insert into FW_PRICE_B (DEF1, DEF2, DEF3, DEF4, DEF5, DR, INFOB, MARKET, PK_FWPRICEB, PRICE, TS)

values (null, null, null, null, null, 0, '0001ZZ1000000001H57I', '1003ZZ1000000000BPAT', '0001ZZ1000000001H57J', 2341.00000000, '2013-05-24 19:30:07');

insert into FW_PRICE_B (DEF1, DEF2, DEF3, DEF4, DEF5, DR, INFOB, MARKET, PK_FWPRICEB, PRICE, TS)

values (null, null, null, null, null, 0, '0001ZZ1000000001H57I', '1003ZZ1000000000BPAV', '0001ZZ1000000001H57K', 2150.00000000, '2013-05-24 19:30:07');

insert into FW_PRICE_B (DEF1, DEF2, DEF3, DEF4, DEF5, DR, INFOB, MARKET, PK_FWPRICEB, PRICE, TS)

values (null, null, null, null, null, 0, '0001ZZ1000000001H57I', '1003ZZ1000000000BPAW', '0001ZZ1000000001H57L', 2000.00000000, '2013-05-24 19:30:07');

insert into FW_PRICE_B (DEF1, DEF2, DEF3, DEF4, DEF5, DR, INFOB, MARKET, PK_FWPRICEB, PRICE, TS)

values (null, null, null, null, null, 0, '0001ZZ1000000001H57M', '1003ZZ1000000000BPAX', '0001ZZ1000000001H57N', 12.00000000, '2013-05-24 19:30:28');

insert into FW_PRICE_B (DEF1, DEF2, DEF3, DEF4, DEF5, DR, INFOB, MARKET, PK_FWPRICEB, PRICE, TS)

values (null, null, null, null, null, 0, '1003ZZ1000000000BXSA', '1003ZZ1000000000BPAT', '1003ZZ1000000000BXSB', 2805.00000000, '2013-05-27 10:35:19');

insert into FW_PRICE_B (DEF1, DEF2, DEF3, DEF4, DEF5, DR, INFOB, MARKET, PK_FWPRICEB, PRICE, TS)

values (null, null, null, null, null, 0, '1003ZZ1000000000BXSA', '1003ZZ1000000000BPAV', '1003ZZ1000000000BXSC', 2680.00000000, '2013-05-27 10:35:19');

insert into FW_PRICE_B (DEF1, DEF2, DEF3, DEF4, DEF5, DR, INFOB, MARKET, PK_FWPRICEB, PRICE, TS)

values (null, null, null, null, null, 0, '1003ZZ1000000000BXSA', '1003ZZ1000000000BPAW', '1003ZZ1000000000BXSD', 2600.00000000, '2013-05-27 10:35:19');

insert into FW_PRICE_B (DEF1, DEF2, DEF3, DEF4, DEF5, DR, INFOB, MARKET, PK_FWPRICEB, PRICE, TS)

values (null, null, null, null, null, 0, '1003ZZ1000000000BXSE', '1003ZZ1000000000BPAT', '1003ZZ1000000000BXSF', 2785.00000000, '2013-05-27 10:36:08');

insert into FW_PRICE_B (DEF1, DEF2, DEF3, DEF4, DEF5, DR, INFOB, MARKET, PK_FWPRICEB, PRICE, TS)

values (null, null, null, null, null, 0, '1003ZZ1000000000BXSE', '1003ZZ1000000000BPAV', '1003ZZ1000000000BXSG', 2710.00000000, '2013-05-27 10:36:08');

insert into FW_PRICE_B (DEF1, DEF2, DEF3, DEF4, DEF5, DR, INFOB, MARKET, PK_FWPRICEB, PRICE, TS)

values (null, null, null, null, null, 0, '1003ZZ1000000000BXSE', '1003ZZ1000000000BPAW', '1003ZZ1000000000BXSH', 2655.00000000, '2013-05-27 10:36:08');

insert into FW_PRICE_B (DEF1, DEF2, DEF3, DEF4, DEF5, DR, INFOB, MARKET, PK_FWPRICEB, PRICE, TS)

values (null, null, null, null, null, 0, '0001ZZ1000000001H5L2', '1003ZZ1000000000BPAX', '0001ZZ1000000001H5L3', 12.00000000, '2013-05-25 01:41:00');

insert into FW_PRICE_B (DEF1, DEF2, DEF3, DEF4, DEF5, DR, INFOB, MARKET, PK_FWPRICEB, PRICE, TS)

values (null, null, null, null, null, 0, '0001ZZ1000000001H5L8', '1003ZZ1000000000BPAX', '0001ZZ1000000001H5L9', 12.00000000, '2013-05-25 01:48:03');

insert into FW_PRICE_B (DEF1, DEF2, DEF3, DEF4, DEF5, DR, INFOB, MARKET, PK_FWPRICEB, PRICE, TS)

values (null, null, null, null, null, 0, '0001ZZ1000000001H5LD', '1003ZZ1000000000BPAX', '0001ZZ1000000001H5LE', 12.00000000, '2013-05-25 01:49:27');



-- 查询煤炭的各市场报价 

select fw_price.pricedate,

       fw_market.marketcode,

       fw_market.marketname,

       fw_product.productcode,

       fw_product.productname,

       fw_price_b.price

  from fw_price_b, fw_price, fw_market, fw_product

 where fw_price_b.infob = fw_price.pk_fwprice

   and fw_price_b.market = fw_market.pk_market

   and fw_market.pk_fwproduct = fw_product.pk_fwproduct

   and fw_product.productcode='03'

 order by pricedate

原始输出如下：



PRICEDATE	MARKETCODE	MARKETNAME	PRODUCTCODE	PRODUCTNAME	PRICE

2013/5/24	3	山西_煤炭	3	煤炭	2000

2013/5/24	1	南方_煤	3	煤炭	2341

2013/5/24	2	北方_煤	3	煤炭	2150

2013/5/26	2	北方_煤	3	煤炭	2710

2013/5/26	1	南方_煤	3	煤炭	2785

2013/5/26	3	山西_煤炭	3	煤炭	2655

2013/5/27	3	山西_煤炭	3	煤炭	2600

2013/5/27	1	南方_煤	3	煤炭	2805

2013/5/27	2	北方_煤	3	煤炭	2680

希望能够输出：



日期         山西_煤炭 南方_煤 北方_煤

2013/5/24   2000     2341    2150

2013/5/26   2655     2785    2710

请问该如何写这个SQL？
市场的数据会是动态增加的

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iqlife 2013-05-27

oracle 10g c参考 http://bbs.csdn.net/topics/330039676 Oracle 11g 行列互换 pivot 和 unpivot

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chen870201 2013-05-27

恩非常感谢按照1楼给的资料，已完成

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hh7yx 2013-05-27

with t as
 (select fw_price.pricedate, fw_market.marketname, fw_price_b.price
    from fw_price_b, fw_price, fw_market, fw_product
   where fw_price_b.infob = fw_price.pk_fwprice
     and fw_price_b.market = fw_market.pk_market
     and fw_market.pk_fwproduct = fw_product.pk_fwproduct
     and fw_product.productcode = '03'
   order by pricedate)
select *
  from t pivot(sum(price) for marketname in('山西_煤炭',
                                            '南方_煤',
                                            '北方_煤'));

一个sql搞不定动态增加，虽然pivot能搞定，但输出的格式是xml的，一般都不实用。。可以参考下面的帖子，稍显复杂。 http://www.itpub.net/thread-1609939-1-1.html

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chen870201 2013-05-27

引用 1 楼 java3344520 的回复: