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PONeed query to select direct and indirect customerID aliases
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18601791
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2013-09-03T21:27:28.427
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2013-09-05T21:05:28.367
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2013-09-04T04:11:03.633
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I need a query that will return all related alias id's from either column. Shown here are some alias customer ids, among thousands of other rows. If the input parameter to a query is id=7, I need a query that would return 5 rows (1,5,7,10,22). That is because they are all aliases of one-another. For example, 22 and 10 are indirect aliases of 7. <pre><code>CustomerAlias -------------------------- AliasCuID AliasCuID2 -------------------------- 1 5 1 7 5 7 10 5 22 1 </code></pre> Here is an excerpt from the customer table. <pre><code>Customer ---------------------------------- CuID CuFirstName CuLastName ---------------------------------- 1 Mike Jones 2 Fred Smith 3 Jack Jackson 4 Emily Simpson 5 Mike Jones 6 Beth Smith 7 Mike jones 8 Jason Robard 9 Emilie Jiklonmie 10 Michael jones 11 Mark Lansby 12 Scotty Slash 13 Emilie Jiklonmy 22 mike jones </code></pre> I've been able to come close, but I cannot seem to select the indirectly related aliases correctly. Given this query: <pre><code>SELECT DISTINCT Customer.CuID, Customer.CuFirstName, Customer.CuLastName FROM Customer WHERE (Customer.CuID = 7) OR (Customer.CuID IN (SELECT AliasCuID2 FROM CustomerAlias AS CustomerAlias_2 WHERE (AliasCuID = 7))) OR (Customer.CuID IN (SELECT AliasCuID FROM CustomerAlias AS CustomerAlias_1 WHERE (AliasCuID2 = 7))) </code></pre> Returns 3 out of 5 of the desired ids of course. This lacks the indirectly related aliased id of 10 and 22 in the result rows. <pre><code>1 Mike Jones 5 Mike Jones 7 Mike jones </code></pre> * Based on suggestions below, I am trying a CTE hierarchical query. I have this now after following some suggestions. It works for some, as long as the records in the table reference enough immediate ids. But, if the query uses id=10, then it still comes up short, just by the nature of the data. <pre><code>DECLARE @id INT SET @id = 10; DECLARE @tmp TABLE ( a1 INT, a2 INT, Lev INT ); WITH Results (AliasCuID, AliasCuID2, [Level]) AS ( SELECT AliasCuID, AliasCuID2, 0 as [Level] FROM CustomerAlias WHERE AliasCuID = @id OR AliasCuID2 = @id UNION ALL -- Recursive step SELECT a.AliasCuID, a.AliasCuID2, r.[Level] + 1 AS [Level] FROM CustomerAlias a INNER JOIN Results r ON a.AliasCuID = r.AliasCuID2 ) INSERT INTO @tmp SELECT * FROM Results; WITH Results3 (AliasCuID, AliasCuID2, [Level]) AS ( SELECT AliasCuID, AliasCuID2, 0 as [Level] FROM CustomerAlias WHERE AliasCuID = @id OR AliasCuID2 = @id UNION ALL -- Recursive step SELECT a.AliasCuID, a.AliasCuID2, r.[Level] + 1 AS [Level] FROM CustomerAlias a INNER JOIN Results3 r ON a.AliasCuID2 = r.AliasCuID ) INSERT INTO @tmp SELECT * FROM Results3; SELECT DISTINCT a1 AS id FROM @tmp UNION ALL SELECT DISTINCT a2 AS id FROM @tmp ORDER BY id </code></pre> Note that this is a simplified the query to just give a list of related ids. <pre><code>--- id --- 5 5 7 10 </code></pre> But, it is still unable to pull in ids 1 and 22.
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<sql><database><tsql>
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Need query to select direct and indirect customerID aliases
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