一个SQL语句产生三个表

我需要创建一个将生成三个表的sql语句。一个SQL语句产生三个表

我有，如果我单独运行，我可以产生三个表的单个SQL代码：表1

select t.TRADE_ID, t.TRADE_VERSION, t.TRADE_SOURCE_SYSTEM, tl.LINK_PARENT_ID, 
tl.LINK_PARENT_VERSION, tc.CHARGE_AMOUNT, tc.CHARGE_SCOPE FROM EQ_MO_TRADE (NOLOCK) t, EQ_MO_TRADE_CHARGE (NOLOCK) tc, EQ_MO_TRADE_LINKAGE (NOLOCK) tl 
WHERE t.TRADE_OID = tl.TRADE_OID 
AND t.TRADE_OID = tc.TRADE_OID 
AND tl.LINK_TYPE = 'Allocation' 
AND tc.CHARGE_NAME = 'Commission' 
AND tc.CHARGE_AMOUNT != 0.0

表2

select aD.ALLOCATION_ID, aD.ALLOCATION_VERSION, aD.ALLOCATION_SOURCE_SYSTEM, 
    al.LINK_PARENT_ID, al.LINK_PARENT_VERSION, ac.CHARGE_AMOUNT FROM EQ_MO_ALLOCATION_DETAIL aD, EQ_MO_ALLOCATION_DETAIL_CHARGE ac, EQ_MO_ALLOCATION_INSTR_LINKAGE al, EQ_MO_ALLOCATION_INSTR aI 
    WHERE aD.ALLOCATION_DETAIL_OID = ac.ALLOCATION_DETAIL_OID 
    AND aD.ALLOCATION_INSTR_ID = aI.ALLOCATION_INSTR_ID 
    AND aI.ALLOCATION_INSTR_OID = al.ALLOCATION_INSTR_OID 
    AND ac.CHARGE_NAME = 'Commission' 
    AND ac.CHARGE_AMOUNT != 0.0 
    AND ac.CHARGE_AMOUNT != -1.0 
    and aD.ALLOCATION_ID in 

(select tl.LINK_PARENT_ID FROM EQ_MO_TRADE t, EQ_MO_TRADE_CHARGE tc, EQ_MO_TRADE_LINKAGE tl 
    where t.TRADE_OID = tl.TRADE_OID 
    AND t.TRADE_OID = tc.TRADE_OID 
    AND tl.LINK_TYPE = 'Allocation' 
    AND tc.CHARGE_NAME = 'Commission' 
    AND tc.CHARGE_AMOUNT != 0.0)

所以表2平它的输入从列表3从表2中列出它的输入。

如何重新分解这些SQL语句以删除代码重复并轻松地将p将列值分配到下一个表格。

是否可以将这些SQL转换为一个？

编辑：Netezza公司DB查询通过DBVisualizer中

来源

2013-01-17 Will

创建两个视图？ – deerchao

将它添加到**标签** - 这是阐明你使用的数据库引擎之类的东西的地方:-) –

@deerchao，我很新的SQL我怎么能创建这些视图，从列传递值一个到另一个像变量 – Will

当然可以！可能有助于确切知道你需要哪些列，但我相信下面的工作。噢，总是明确限定您的连接，而不是使用隐式连接语法（逗号分隔的FROM子句），这样更好。

WITH Charged_Allocated_Commission (trade_id, trade_version, trade_source_system, link_parent_id, link_parent_version, charge_amount, charge_scope) AS 
    SELECT t.trade_id, t.trade_version, t.trade_source_system, 
      tl.link_parent_id, tl.link_parent_version, 
      tc.charge_amount, tc.charge_scope 
    FROM Eq_Mo_Trade t 
    JOIN Eq_Mo_Trade_Linkage tl 
     ON tl.trade_oid = t.trade_oid 
      AND tl.link_type = 'Allocation' 
    JOIN Eq_Mo_Trade_Charge tc 
     ON tc.trade_oid = t.trade_oid 
      AND tc.charge_name = 'Commission' 
      AND tc.charge_amount != 0.0) 
SELECT cac.trade_id, cac.trade_version, cac.trade_source_system, 
     cac.link_parent_id, cac.link_parent_version, 
     cac.charge_amount, cac.charge_scope, 
     ad.allocation_version, ad.allocation_source_system, 
     -- I'm fairly certain these are duplicates of cac.trade_version/_source_system... 
     al.link_parent_id, al.link_parent_version, 
     ac.charge_amount 
FROM Charged_Allocated_Commission cac 
JOIN Eq_Mo_Allocation_Detail ad 
    ON ad.allocation_id = cac.link_parent_id 
JOIN Eq_Mo_Allocation_Detail_Charge ac 
    ON ac.allocation_detail_oid = ad.allocation_detail_oid 
    AND ac.charge_name = 'Commission' 
    AND ac.charge_amount NOT IN (0.0, -1.0) 
JOIN Eq_Mo_Allocation_Instr ai 
    ON ai.allocation_instr_id = ad.allocation_instr_id 
JOIN Eq_Mo_Allocation_Instr_Linkage al 
    ON al.allocation_instr_oid = ai.allocation_instr_oid

不知道更多关于您的布局，很难知道还有什么可能被淘汰。
有两点要注意：

我假设Eq_Mo_Trade_Charge.charge_amount和Eq_Mo_Allocation_Detail_Charge.charge_amount是小数/钱的类型，而不是某种浮点/实型的。如果他们是花车，不仅条件不成立，你也不会储存确切的金额。
所有以Eq_Mo_...为前缀的“噪音”都有点磨损。 Netezza不支持可以放置表格的模式吗？

来源

2013-01-17 17:13:12

一个SQL语句产生三个表

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