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  1. sql - NOT IN vs NOT EXISTS - Stack Overflow

    Which of these queries is the faster? NOT EXISTS: SELECT ProductID, ProductName FROM Northwind..Products p WHERE NOT EXISTS ( SELECT 1 FROM Northwind..[Order Details] od …

  2. How do I perform an IF...THEN in an SQL SELECT?

    Sep 15, 2008 · The CASE statement is the closest to IF in SQL and is supported on all versions of SQL Server.

  3. Login to Microsoft SQL Server Error: 18456 - Stack Overflow

    Jul 8, 2016 · I am getting this error while trying to connect to the SQL Server. Microsoft SQL Server Error: 18456 Can anybody tell me what the error code means?

  4. sql server - SQL MAX of multiple columns? - Stack Overflow

    Mar 8, 2012 · How do you return 1 value per row of the max of several columns: TableName [Number, Date1, Date2, Date3, Cost] I need to return something like this: [Number, Most_Recent_Date, Cost] …

  5. SQL to find the number of distinct values in a column

    Apr 5, 2019 · SQL to find the number of distinct values in a column Asked 17 years, 3 months ago Modified 2 years, 8 months ago Viewed 826k times

  6. Convert Rows to columns using 'Pivot' in SQL Server

    Apr 10, 2013 · Pivot is one of the SQL operator which is used to turn the unique data from one column into multiple column in the output. This is also mean by transforming the rows into columns (rotating …

  7. How to see query history in SQL Server Management Studio

    Is the query history stored in some log files? If yes, can you tell me how to find their location? If not, can you give me any advice on how to see it?

  8. sql - Concatenate text from multiple rows into a single text string ...

    Consider a database table holding names, with three rows: Peter Paul Mary Is there an easy way to turn this into a single string of Peter, Paul, Mary?

  9. List the queries running on SQL Server - Stack Overflow

    Is there a way to list the queries that are currently running on MS SQL Server (either through the Enterprise Manager or SQL) and/or who's connected? I think I've got a very long running query is ...

  10. sql - Incorrect syntax near '' - Stack Overflow

    SELECT TOP 1000 * FROM master.sys.procedures as procs left join master.sys.parameters as params on procs.object_id = params.object_id This seems totally correct, but I keep getting the following …