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9.1

Nested CASE T-SQL statements

Asked by HarpuaFSB in SQL Query Syntax, MS SQL Server, Databases Miscellaneous

Tags: t-sql, microsoft sql server 2000

Hi all, I'm trying to convert some Access queries to T-SQL and I was wondering if it is at all possible to replace references to expressions in the Access query with a nested CASE statement in SQL.

See below for the code and a regular ole "IF" statement where I need to somehow nest case statements.


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SELECT a.TRXSORCE AS PO_No,
b.DOCNUMBR AS Vendor_Doc,
b.TRXLOCTN AS Port,
b.ITEMNMBR AS ItemID,
b.TRXQTY AS Ship_Qty,
CASE 
	WHEN b.TRXQTY >= 0 THEN b.EXTDCOST
	ELSE b.EXTDCOST * -1
END AS Inv_Total, /* EXPR2 */
NULL AS InvoiceNo,
b.DOCDATE AS ReceiptDate,
a.POSTEDDT AS PostedDate,
0 AS Match_Qty,
CASE c.CalcValue
	WHEN 'Y' THEN b.TRXQTY * d.Price
	ELSE 0
END AS Extended_Cost, /* EXPR3 */
/* IF c.CalcValue = 'Y' Then EXPR2-EXPR3 ELSE 0 */ AS Landed_Cost,
0 AS Surcharge_Total
FROM GREAT_PLAINS.ANSAC.dbo.IV30100 a
JOIN GREAT_PLAINS.ANSAC.dbo.IV30300 b
ON a.TRXSORCE = b.TRXSORCE
JOIN AA_Item_Convert c
ON b.ITEMNMBR = c.Item
JOIN tbl_Price d
ON SUBSTRING(CONVERT(NVARCHAR(12), b.DOCDATE, 107), 1, 3) + '-' + SUBSTRING(CONVERT(NVARCHAR(12), b.DOCDATE, 107), 9, 4) = d.[Month]
WHERE a.TRXSORCE LIKE 'IVA%'
AND b.DOCDATE BETWEEN '03/01/2009' AND '03/31/2009'
[+][-]04/15/09 11:19 AM, ID: 24150987Expert Comment

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[+][-]04/15/09 11:20 AM, ID: 24150994Accepted Solution

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About this solution

Zones: SQL Query Syntax, MS SQL Server, Databases Miscellaneous
Tags: t-sql, microsoft sql server 2000
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Solution Provided By: dan_neal
Participating Experts: 3
Solution Grade: A
 
[+][-]04/15/09 11:21 AM, ID: 24150999Expert Comment

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[+][-]04/15/09 11:21 AM, ID: 24151006Expert Comment

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