调整 SQL 查询

Question

我正在尝试调整以下查询，该查询针对 INVENTTABLE 获得了 500k IO，我认为这是一个不错的起点。虽然所有连接的复杂性都让我失望，但我无法总结出一个好的开始？

提前感谢您的任何提示。

SET STATISTICS IO ON

DECLARE
@paramCompany       varchar(3),
@paramCreatedBy     varchar(8000),
@paramCustomer      varchar(100),
@paramBlanketId     varchar(20)

SET @paramCompany = 'adf'
SET @paramCreatedBy = 'All'
SET @paramCustomer = NULL
SET @paramBlanketId = NULL

SELECT
 un.MAINSALESID,
 un.DATAAREAID,
 Sum(un.Quantity) as 'Quantity',
 Sum(un.SalesValue) as 'SalesValue'
INTO #desprel
 FROM
 (SELECT 
  stl.MAINSALESID,
  st.DATAAREAID,
  sl.SALESQTY as 'Quantity',
  sl.SALESQTY * sl.SALESPRICE as 'SalesValue'
 FROM
  DynamicsV5Realtime.dbo.SALESTABLE st
 INNER JOIN
  DynamicsV5Realtime.dbo.SALESLINE sl
 ON
  sl.SALESID = st.SALESID
  and sl.DATAAREAID = st.DATAAREAID
 INNER JOIN
  DynamicsV5Realtime.dbo.INVENTTABLE it
 ON
  it.ITEMID = sl.ITEMID
  and it.DATAAREAID = sl.DATAAREAID
 INNER JOIN
  DynamicsV5Realtime.dbo.SALESTABLELINKS stl
 ON
  stl.SUBSALESID = st.SALESID
  and stl.DATAAREAID = st.DATAAREAID
 INNER JOIN
  DynamicsV5Realtime.dbo.SALESTABLE st1
 ON
  st1.SALESID = stl.MAINSALESID
  and st1.SALESTYPE = 5
 --to get Order created by
 inner JOIN
  --TR  
  vw_R000_EmployeeList pm
 ON 
  --st1.SALESTAKER = pm.emplid
  CASE WHEN st1.SALESTAKER = 'balla' THEN 'gende' ELSE st1.SALESTAKER END = pm.emplid
  and (pm.[NAME] in (SELECT * FROM       udf_MultiValueParameterHandlingString(@paramCreatedBy)) or @paramCreatedBy = 'All')
 WHERE
  st.DATAAREAID = 'adf'
  and st.SALESTYPE = 3 -- Release Order
  and st.SALESSTATUS in (2,3)
  and sl.SALESSTATUS <> 4
  and it.ITEMGROUPID <> 'G0022A'
  and sl.SALESQTY > 0
  and st1.CUSTACCOUNT = IsNull(@paramCustomer,st1.CUSTACCOUNT)
  and st1.SALESID = IsNull(@paramBlanketId,st1.SALESID)
 UNION ALL
 SELECT 
  stl.MAINSALESID,
  st.DATAAREAID,
  sl.SALESQTY as 'Quantity',
  sl.SALESQTY * sl.SALESPRICE as 'SalesValue'
 FROM
  DynamicsV5Realtime.dbo.SALESTABLE st
 INNER JOIN
  DynamicsV5Realtime.dbo.SALESLINE sl
 ON
 sl.SALESID = st.SALESID
 and sl.DATAAREAID = st.DATAAREAID
 INNER JOIN
  DynamicsV5Realtime.dbo.INVENTTABLE it
 ON
  it.ITEMID = sl.ITEMID
  and it.DATAAREAID = sl.DATAAREAID
 INNER JOIN
  DynamicsV5Realtime.dbo.SALESTABLELINKS stl
 ON
  stl.SUBSALESID = st.MARIMSSALESID
  and stl.DATAAREAID = st.DATAAREAID
 INNER JOIN
  DynamicsV5Realtime.dbo.SALESTABLE st1
 ON
  st1.SALESID = stl.MAINSALESID
  and st1.SALESTYPE = 5
 --to get Order created by
 inner JOIN
 --TR  
  vw_R000_EmployeeList pm
 ON 
 --st1.SALESTAKER = pm.emplid
  CASE WHEN st1.SALESTAKER = 'balla' THEN 'gende' ELSE st1.SALESTAKER END = pm.emplid
 and (pm.[NAME] in (SELECT * FROM   udf_MultiValueParameterHandlingString(@paramCreatedBy)) or @paramCreatedBy = 'All')
 WHERE
  st.DATAAREAID = 'adf'
  and st.SALESTYPE = 3 -- Release Order
  and st.SALESSTATUS in (2,3)
  and sl.SALESSTATUS <> 4
  and it.ITEMGROUPID <> 'G0022A'
  and sl.SALESQTY < 0
  and st1.CUSTACCOUNT = IsNull(@paramCustomer,st1.CUSTACCOUNT)
  and st1.SALESID = IsNull(@paramBlanketId,st1.SALESID)     
            ) un
GROUP BY
 un.MAINSALESID,
 un.DATAAREAID

Answer 1

只有我一个人还是这个特定的部分有点混乱？我会先解决这个问题。

inner JOIN
  --TR  
  vw_R000_EmployeeList pm
 ON 
  --st1.SALESTAKER = pm.emplid
  CASE WHEN st1.SALESTAKER = 'balla' THEN 'gende' ELSE st1.SALESTAKER END = pm.emplid
  and (pm.[NAME] in (SELECT * FROM udf_MultiValueParameterHandlingString(@paramCreatedBy)) or @paramCreatedBy = 'All')

您能否尝试使用临时表预先找出销售员 ID，然后加入该 ID？在连接条件中使用 udf 和 case 语句可能不是最好的主意。

Answer 2

您查看 inventtable 的想法很好。很明显，它的任何字段都没有显示在结果中，也不需要它作为连接其他两个表的链接。因此，它只是为了保证 inventtable 中存在适当的记录。这可以在 EXISTS 子句中完成。

然后检查为什么有两个几乎相似的连接用 UNION ALL 粘合。所有表都被访问两次。这是必要的吗？有一次，您希望所有 sl.salesqty 0 并且你通过 stl.subsalesid = st.salesid 链接。也许您可以执行这一选择语句并且只访问每个表一次。

结果有一个 salestable (st) 字段。这是 st.DATAAREAID。但这实际上是一个搜索和连接条件，因此您可以将其替换为 sl.DATAAREAID 甚至是文字“adf”。所以表 st 中没有字段。也许也只是一个 EXISTS 的东西？

同样，当 salestable 再次被读取为 st1 时。它不是所选列的一部分，因此也许可以将其转换为 EXISTS 子句。

这只是初见，所以我可能会在这里和那里弄错。它只是给你一个开始的东西。