What are the differences between T-SQL, SQL Server and SQL
Sep 19, 2013 · A further note - the SQL extensions, like T-SQL, are generally considered full-fledged programming languages, complete with looping, if/then, case statements, etc. SQL itself is limited to …
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 …
LEFT JOIN vs. LEFT OUTER JOIN in SQL Server - Stack Overflow
Jan 2, 2009 · A LEFT JOIN B A LEFT OUTER JOIN B A RIGHT JOIN B A RIGHT OUTER JOIN B A FULL JOIN B A FULL OUTER JOIN B A INNER JOIN B A JOIN B Also take a look at the answer I …
What is the difference between SQL, PL-SQL and T-SQL?
Jun 25, 2009 · The query language that Microsoft SQL Server uses is a variant of the ANSI-standard Structured Query Language, SQL. The SQL Server variant is called Transact-SQL.
Syntax of for-loop in SQL Server - Stack Overflow
May 20, 2011 · SQL is a very different language compared to what you're used to. It's focused on what, not how. You tell SQL Server what results you want, and let it figure out how to produce the answer. …
How do you change the datatype of a column in T-SQL Server?
Mar 9, 2009 · I am trying to change a column from a varchar(50) to a nvarchar(200). What is the SQL command to alter this table?
Is there a Boolean data type in Microsoft SQL Server like there is in ...
Jun 29, 2010 · Quoting the MSDN article: bit (Transact-SQL) An integer data type that can take a value of 1, 0, or NULL. The SQL Server Database Engine optimizes storage of bit columns. If there are 8 …
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.
How to add a column with a default value to an existing table in SQL ...
Jun 21, 2016 · ADD [Column_Name] BIT NOT NULL Default ( 0 ) Here is another way to add a column to an existing database table with a default value. A much more thorough SQL script to add a column …
How can I select the first day of a month in SQL?
I used GETDATE () as a date to work with, you can replace it with the date which you need. Here's how this works: First we format the date in YYYYMMDD... format truncating to keep just the 6 leftmost …