cross-apply

Is it possible to take a table that is structured in the following fashion: ID Month Info1 Info2 1 1 A B 1 2 C D 1 3 E F 2 3 G H 2 4 I J That ends up into a table like this: ID JanInfo1 JanInfo2 FebInfo1 FebInfo2 MarInfo1 MarInfo2 AprInfo1 AprInfo2 1 A B C D E F NULL NULL 2 NULL NULL NULL NULL G H I J I've looked into using pivots and couldn't get them to work. I currently use CROSS APPLY table valued functions for each each month. Is there a better way to do this? Edit: Added existing query - tried to simplify for display: -- Get the unique IDs DECLARE @PersonIds TABLE ( UploadID

Is it possible to use the cross apply clause in the from part of an update statement, in SQL Server 2005? You where right, Albert. I made some tests and found that it's possible, indeed. The use is the same as in a SELECT statement. For example: UPDATE some_table SET some_row = A.another_row, some_row2 = A.another_row/2 FROM some_table st CROSS APPLY (SELECT TOP 1 another_row FROM another_table at WHERE at.shared_id=st.shared_id) AS A WHERE ... 来源： https://stackoverflow.com/questions/7492797/using-cross-apply-in-update-statement

Day #3 with SQL Server. I am trying to combine 2 columns of delimited data into one output from a Table Valued Function. Here is my data: I would like the data to be processed and placed into a table in the following format: I am currently trying to use this CROSS APPLY TSQL statement, but I don't know what I'm doing. USE [Metrics] INSERT INTO dbo.tblSplitData(SplitKey, SplitString, SplitValues) SELECT d.RawKey, c.*, e.* FROM dbo.tblRawData d CROSS APPLY dbo.splitstringcomma(d.DelimitedString) c, dbo.splitstringcomma(d.DelimitedValues) e My research on CROSS APPLY has broad context, and I don

I want to create some test cases for Entity Framework queries that surely generate SQL commands that contain CROSS APPLY or OUTER APPLY operators. Could someone show typical scenarios where these kind of SQL queries appear? In LINQ 2 SQL this always results in an APPLY : from t1 in tab1 from t2 in tab2.Where(t2 => t2.SomeCol == t1.SomeCol).Take(1) select new { t1, t2 } In EF this will either fail, or also result in an APPLY (I don't know which one). This is a correlated join which requires an APPLY on the SQL side. Something like this would generate an outer apply: var ListLocation = from d in

I need to use CROSS APPLY in MySQL (EC2 RDS MySQL instance). Looks like MySQL doesn't recognise the CROSS APPLY Syntax. Can someone help me please? Here's the query. SELECT ORD.ID ,ORD.NAME ,ORD.DATE ,ORD_HIST.VALUE FROM ORD CROSS APPLY ( SELECT TOP 1 ORD_HISTORY.VALUE FROM ORD_HISTORY WHERE ORD.ID = ORD_HISTORY.ID AND ORD.DATE <= ORD_HISTORY.DATE ORDER BY ORD_HISTORY.DATE DESC ) ORD_HIST Your closest direct approximation is a join with a correlated sub-query as the predicate. SELECT ORD.ID ,ORD.NAME ,ORD.DATE ,ORD_HISTORY.VALUE FROM ORD INNER JOIN ORD_HISTORY ON ORD_HISTORY.<PRIMARY_KEY> =