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 …
Should I use != or <> for not equal in T-SQL? - Stack Overflow
Yes; Microsoft themselves recommend using <> over != specifically for ANSI compliance, e.g. in Microsoft Press training kit for 70-461 exam, "Querying Microsoft SQL Server", they say "As an …
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.
SQL: IF clause within WHERE clause - Stack Overflow
Sep 18, 2008 · Is it possible to use an IF clause within a WHERE clause in MS SQL? Example: WHERE IF IsNumeric(@OrderNumber) = 1 OrderNumber = @OrderNumber ELSE OrderNumber LIKE '%' + @
SQL - STDEVP or STDEV and how to use it? - Stack Overflow
SQL - STDEVP or STDEV and how to use it? Asked 12 years, 10 months ago Modified 3 years, 3 months ago Viewed 129k times
SQL Server tables: what is the difference between @, # and
Feb 8, 2010 · In SQL Server, what is the difference between a @ table, a # table and a ## table?
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?
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, 2 months ago Modified 2 years, 8 months ago Viewed 826k times
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] …
SQL SELECT WHERE field contains words - Stack Overflow
Jan 12, 2013 · I need a select which would return results like this: SELECT * FROM MyTable WHERE Column1 CONTAINS 'word1 word2 word3' And I need all results, i.e. this includes strings with 'word2 …