SQL Server效能調優雜記(三)

來源:互聯網
上載者:User

這個例子和上面一個例子結果相反。

SQL文1

declare @CWB_NO varchar(50)
set @cwb_no='31301379874'
SELECT   a.AWB_NO,
  a.BWB_NO,
  a.CWB_NO,
  a.ORIGIN,
  a.DEST,
  a.MODIFY_ON,
  a.CREATED_ON,
  a.CONSIGNOR_CUSTOMER_CODE,
  a.CONSIGNOR_CODE, 
  a.CONSIGNOR_NAME,
  a.CONSIGNEE_NAME,
  a.CWB_STATUS,
  a.CWB_TYPE,
  ISNULL(a.PCS, 0) AS PCS,
  a.BWBLIST,
  b.PWEIGHT  
FROM    TB_CWB AS a
LEFT JOIN  TB_CWBWEIGHT AS b
ON a.CWB_NO = b.CWB_NO
AND b.AVAILABLE = 'Y' 
WHERE    a.AVAILABLE = 'Y'
AND (a.CWB_NO = @CWB_NO OR
                                     (( @CWB_NO IS NULL)
AND (a.AWB_NO = NULL OR NULL IS NULL)
AND (a.BWB_NO = NULL OR NULL IS NULL)
AND (a.IE_TYPE = NULL OR NULL IS NULL)
AND (a.CREATED_ON >= NULL OR NULL IS NULL)
AND (a.CREATED_ON <= NULL OR NULL IS NULL)
AND (a.PAYMENT = NULL OR NULL IS NULL)
AND (a.ORIGIN = NULL OR NULL IS NULL)
AND (a.DEST = NULL OR NULL IS NULL)
AND (a.CONSIGNOR_CUSTOMER_CODE = NULL OR NULL IS NULL)
AND (a.CONSIGNOR_NAME LIKE '%' + NULL + '%' OR NULL IS NULL)
AND (a.CONSIGNEE_NAME LIKE '%' + NULL + '%' OR NULL IS NULL)
AND (a.CWB_TYPE = NULL OR NULL IS NULL)))

相關文章

聯繫我們

該頁面正文內容均來源於網絡整理,並不代表阿里雲官方的觀點,該頁面所提到的產品和服務也與阿里云無關,如果該頁面內容對您造成了困擾,歡迎寫郵件給我們,收到郵件我們將在5個工作日內處理。

如果您發現本社區中有涉嫌抄襲的內容,歡迎發送郵件至: info-contact@alibabacloud.com 進行舉報並提供相關證據,工作人員會在 5 個工作天內聯絡您,一經查實,本站將立刻刪除涉嫌侵權內容。

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.