[英]Excel VBA SQL SUM of empty recordset not returning zero
我想使用一個返回列總和的子查詢,例如:
3 + SELECT SUM(field) FROM some-table WHERE some-criteria
當條件結果為 0 條記錄時,子查詢不返回 0,因此整個查詢失敗並且不返回任何內容(零長度的內容)。
當有記錄時,一切正常。
我試過SUM(IIF(field IS NULL, 0 , field) FROM...
但 ti 不會改變行為。
這是與較大查詢隔離的子查詢:
strSQL = "SELECT SUM(IIF(RCTPAY2.[Sum Paid] IS NULL ,0 , RCTPAY2.[Sum Paid])) FROM [Receivables$B10:K32] AS RCTPAY2 WHERE RCTPAY2.[Invoice Number]=500009 AND RCTPAY2.[Method]='Tax Deduct'"
我怎樣才能讓它總是返回一個有效的數字(如果沒有記錄則為 0,如果有記錄則為字段的 SUM)?
這是我正在使用的提供程序:
strProvider = "Provider=Microsoft.Jet.OLEDB.4.0;"
編輯:根據 JNevill 的請求,我在此處復制完整的 SQL 查詢。 尋找HDR.[Total NIS]-(SELECT SUM
:
SELECT 'C100'+'000000000'+'024227357' + '320' +
FORMAT(HDR.[Invoice Number],'00000000000000000000') +
IIF(ISNULL(HDR.[Print DateTime]),' ',
FORMAT(HDR.[Print DateTime],'YYYYMMDDHHMM')),
LEFT(TRIM(HDR.[Customer Name])+' ',50),
IIF(ISNULL(CST.[Bill To: Address1]), ' ',
LEFT(TRIM(CST.[Bill To: Address1])+' ',50)),
IIF(ISNULL(CST.[Bill To: Address4]), ' ',
LEFT(TRIM(CST.[Bill To: Address4])+' ',10)),
IIF(ISNULL(CST.[Bill To: Address2]),
' ',
LEFT(TRIM(CST.[Bill To: Address2])+' ',30)),
IIF(ISNULL(CST.[Bill To: Address3]), ' ',
LEFT(TRIM(CST.[Bill To: Address3])+' ',8)),
IIF(ISNULL(CNTRY.[Country]),
' ',
LEFT(TRIM(CNTRY.[Country])+' ',30)),
IIF(ISNULL(CST.[Bill To: Address5]), ' ', CST.[Bill To: Address5]),
IIF(ISNULL(CST.[Phone]), ' ',
LEFT(TRIM(CST.[Phone])+' ',15)) ,
IIF(ISNULL(CST.[Company ID]), '000000000',
FORMAT(CST.[Company ID],'000000000')) +
(SELECT FORMAT(RCTPAY.[Date],'YYYYMMDD')
FROM [ùåøåú ú÷áåìéí$B10:K32] AS RCTPAY
WHERE RCTPAY.[Invoice Number]=HDR.[Invoice Number]
AND RCTPAY.[Line Number]=1) +
IIF(True,
IIF(HDR.[Currency]<>'ù÷ì çãù',
FORMAT(100*HDR.[Total], IIF(HDR.[Total]<0,
'00000000000000',
'+00000000000000')),
' '), ' ') +
IIF (True,
IIF(HDR.[Currency]<>'ù÷ì çãù',
CUR.[IRS Code], ' '),
' ') +
FORMAT(100*(HDR.[Subtotal] * HDR.[Exchange Rate]),
IIF(HDR.[Subtotal]<0,'00000000000000','+00000000000000')) +
IIF(ISNULL(HDR.[Discount%]),' ',
FORMAT(ABS(100*(HDR.[Subtotal] * HDR.[Discount%])),
IIF(HDR.[Subtotal]<0,'+000000000000000',
'-00000000000000'))) +
FORMAT(100*(HDR.[Total In Currency] * HDR.[Exchange Rate]),
IIF(HDR.[Total In Currency]<0,
'00000000000000','+00000000000000')) +
FORMAT(100*(HDR.[VAT] * HDR.[Exchange Rate]),
IIF(HDR.[VAT]<0,'00000000000000','+00000000000000')) +
FORMAT(100*(HDR.[Total NIS]-
(SELECT SUM(RCTPAY2.[Sum Paid])
FROM [ùåøåú ú÷áåìéí$B10:K32] AS RCTPAY2
WHERE RCTPAY2.[Invoice Number]=HDR.[Invoice Number]
AND RCTPAY2.[Method]='ðéëåé îñ áî÷åø')),
IIF(HDR.[Total NIS]<0,
'00000000000000','+00000000000000')) +
FORMAT(100*(SELECT SUM(RCTPAY3.[Sum Paid])
FROM [ùåøåú ú÷áåìéí$B10:K32] AS RCTPAY3
WHERE RCTPAY3.[Invoice Number]=HDR.[Invoice Number]
AND RCTPAY3.[Method]='ðéëåé îñ áî÷åø'),
'+00000000000') +
FORMAT(HDR.[Customer Number],'000000000000000') +
IIF(ISNULL(HDR.[Source Invoice]), ' ',
RIGHT(' ' +
FORMAT(HDR.[Source Invoice],'##########'), 10)) +
IIF(HDR.[Status]='îáåèìú','1',' ') +
FORMAT(HDR.[Date],'YYYYMMDD') + ' ',
' ', FORMAT(HDR.[Invoice Number],
'0000000') + ' '
FROM ((([çùáåðéåú å÷áìåú$B12:AB55] as HDR
LEFT JOIN [ì÷åçåú$B12:X20] as CST
ON HDR.[Customer Number] = CST.[Customer Number])
LEFT JOIN [èáìàåú$ET12:EU254] as CNTRY
ON CST.[Bill To: Address5] = CNTRY.[Code])
LEFT JOIN [èáìàåú$K10:O25] as CUR
ON HDR.[Currency] = CUR.[Currency])
WHERE HDR.[Date]>=43101
AND HDR.[Date]<=43465
AND HDR.[Status]<>'îîúéðä'
AND HDR.[Invoice Type]='çùáåðéú îñ/÷áìä'
這是您的查詢:
SELECT SUM(IIF(RCTPAY2.[Sum Paid] IS NULL ,0 , RCTPAY2.[Sum Paid]))
FROM [Receivables$B10:K32] AS RCTPAY2
WHERE RCTPAY2.[Invoice Number] = 500009 AND RCTPAY2.[Method] = 'Tax Deduct';
您在想:“天哪,這不應該返回NULL
,因為我在IIF()
檢查了它”。 但是你錯過了一些東西:如果沒有行怎么辦? 這就是你遇到的問題。
所以,與其IIF()
的前SUM()
做之后比較SUM()
此外,使用NZ()
而不是IIF()
。 所以:
SELECT NZ(SUM(RCTPAY2.[Sum Paid]), 0)
FROM [Receivables$B10:K32] AS RCTPAY2
WHERE RCTPAY2.[Invoice Number] = 500009 AND RCTPAY2.[Method] = 'Tax Deduct';
SUM()
無論如何都會忽略NULL
值,因此無需將它們變成零。
如果NZ()
不起作用,請嘗試使用 ANSI 標准COALESCE()
函數:
SELECT COALESCE(SUM(RCTPAY2.[Sum Paid]), 0)
FROM [Receivables$B10:K32] AS RCTPAY2
WHERE RCTPAY2.[Invoice Number] = 500009 AND RCTPAY2.[Method] = 'Tax Deduct';
出於絕望,我只會推薦IIF()
或IFNULL()
(和NZ()
)——這些是特定於數據庫的定制函數。
最終對我有用的解決方案是一個 IIF,它檢查相同條件下記錄的 COUNT 是否大於零,然后我應用 SUM 命令。 就像是:
3 + IIF((SELECT(COUNT(*) FROM some-table WHERE some-criteria)=0,0, (SELECT SUM(field) FROM some-table WHERE some-criteria)
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