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DateAdd query takes a long time to complete

I have a request below that has DateAdda sentenceWHERE

SELECT d.INVOICE_NO, d.part_no, d.PART_ORDER_QTY, d.PART_SHIPPED_QTY, d.INV_ALLOC_ORIG_DOC, d.INV_ALLOC_BR_QTY_HIST, d.INV_ALLOC_QTY_HIST, pc.PopCode, pm.SOURCE_CODE, d.BSIT_STORE, I.CUST_NO, C.Sales_type
  FROM [BSIT_ERA_RAW_DATA].[dbo].[INVOICE_ERA_LINE_DTLS] D
  LEFT JOIN [BSIT_ERA_RAW_DATA].[dbo].[INVOICE] I ON D.INVOICE_NO = I.INVOICE_NO
  LEFT JOIN [BSIT_ERA_RAW_DATA].[dbo].[PROD_MASTER] PM ON D.PART_NO = PM.PARTS_MASTER_KEY AND PM.BSIT_STORE = 'STORE01'
  LEFT JOIN [MICQIF_PROD].[dbo].[PopCodes] PC ON right(d.PART_NO,len(d.part_no)-2) COLLATE SQL_Latin1_General_CP1_CI_AS = PC.ItemNo COLLATE SQL_Latin1_General_CP1_CI_AS
  LEFT JOIN [BSIT_ERA_RAW_DATA].[dbo].[CUSTOMER] C ON I.CUST_NO = C.CUSTOMER_ID AND C.BSIT_STORE = 'STORE01'
  WHERE D.PART_ISSUE_DATE >= CONVERT(DATE,DATEADD(mm, DATEDIFF(mm, 0, GETDATE()) - 1 , 0))
  AND D.PART_ISSUE_DATE <= CONVERT(varchar(10), DATEADD(mm, DATEDIFF(mm, 0, GETDATE()) , -1), 120)
  AND I.INVOICE_CLOSED_DATE <= CONVERT(varchar(10), DATEADD(mm, DATEDIFF(mm, 0, GETDATE()) , -1), 120)

  AND D.INV_ALLOC_ORIG_DOC IS NULL
  AND D.INVOICE_NO NOT LIKE 'CM%'
  AND D.PART_NO IS NOT NULL
  and d.part_no like 'cp%'
  and INVOICE_VOID_DATE IS NULL
  AND I.CUST_NO NOT IN ('90102','90103','90104','90105','90201','90203','90204','90205','90401','90402','90403','90405','90501','90502','90503','90504','90301','90302','90304','90305')

This run is a very long time, and in the end I could not finish the process.

However, if you change the date to a static date, for example

CONVERT(DATE,DATEADD(mm, DATEDIFF(mm, 0, GETDATE()) - 1 , 0))

at '2018-01-01'

and CONVERT(varchar(10), DATEADD(mm, DATEDIFF(mm, 0, GETDATE()) , -1), 120)

c '2018-01-31', the request will run smoothly.

Can someone tell me what could be the problem?

Greetings

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1 answer

An excerpt from an article titled Avoid Using Functions in a WHERE Clause is as follows:

, WHERE , , , WHERE. [...] , . , , - , , , , .

, n ( n - ). 1, , where. :

declare @part_issue_date_min date = CONVERT(DATE,DATEADD(mm, DATEDIFF(mm, 0, GETDATE()) - 1 , 0))
    , @part_issue_date_max date = CONVERT(varchar(10), DATEADD(mm, DATEDIFF(mm, 0, GETDATE()) , -1), 120)
    , @invoice_closed_date date = CONVERT(varchar(10), DATEADD(mm, DATEDIFF(mm, 0, GETDATE()) , -1), 120)

SELECT d.INVOICE_NO, d.part_no, d.PART_ORDER_QTY, d.PART_SHIPPED_QTY, d.INV_ALLOC_ORIG_DOC, d.INV_ALLOC_BR_QTY_HIST, d.INV_ALLOC_QTY_HIST, pc.PopCode, pm.SOURCE_CODE, d.BSIT_STORE, I.CUST_NO, C.Sales_type
  FROM [BSIT_ERA_RAW_DATA].[dbo].[INVOICE_ERA_LINE_DTLS] D
  LEFT JOIN [BSIT_ERA_RAW_DATA].[dbo].[INVOICE] I ON D.INVOICE_NO = I.INVOICE_NO
  LEFT JOIN [BSIT_ERA_RAW_DATA].[dbo].[PROD_MASTER] PM ON D.PART_NO = PM.PARTS_MASTER_KEY AND PM.BSIT_STORE = 'STORE01'
  LEFT JOIN [MICQIF_PROD].[dbo].[PopCodes] PC ON right(d.PART_NO,len(d.part_no)-2) COLLATE SQL_Latin1_General_CP1_CI_AS = PC.ItemNo COLLATE SQL_Latin1_General_CP1_CI_AS
  LEFT JOIN [BSIT_ERA_RAW_DATA].[dbo].[CUSTOMER] C ON I.CUST_NO = C.CUSTOMER_ID AND C.BSIT_STORE = 'STORE01'
  WHERE D.PART_ISSUE_DATE >= @part_issue_date_min
  AND D.PART_ISSUE_DATE <= @part_issue_date_max
  AND I.INVOICE_CLOSED_DATE <= @invoice_closed_date

  AND D.INV_ALLOC_ORIG_DOC IS NULL
  AND D.INVOICE_NO NOT LIKE 'CM%'
  AND D.PART_NO IS NOT NULL
  and d.part_no like 'cp%'
  and INVOICE_VOID_DATE IS NULL
  AND I.CUST_NO NOT IN ('90102','90103','90104','90105','90201','90203','90204','90205','90401','90402','90403','90405','90501','90502','90503','90504','90301','90302','90304','90305')
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Source: https://habr.com/ru/post/1693609/

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