
What does double bars (||) mean in SQL? - Stack Overflow
@Martin: I know, but the DBMS is relevant quite often; it's a good habit to get into. SQL Server uses '+' as a string concatenation operator, for instance. (Of course, the better solution would have been for the poster to simply run the query without the count() to see what it did in the first place instead of posting here.) –
sql - Finding even or odd ID values - Stack Overflow
Nov 11, 2011 · Dividend is the numeric expression to divide. Dividend must be any expression of integer data type in sql server. Divisor is the numeric expression to divide the dividend. Divisor must be expression of integer data type except in sql server. SELECT 15 % 2 Output 1 Dividend = 15. Divisor = 2. Let's say you wanted to query
How do I perform an IF...THEN in an SQL SELECT?
Sep 15, 2008 · The CASE expression cannot be used to control the flow of execution of Transact-SQL statements, statement blocks, user-defined functions, and stored procedures. If your needs can not be satisfied by these limitations (for example, a need to return differently shaped result sets dependent on some condition) then SQL Server does also have a ...
sql - How do I use select with date condition? - Stack Overflow
Jan 20, 2009 · SQL queries with date format "dd/MM/yyyy " in Microsoft SQL Server Compact. Related. 1. SQL Query Date ...
SQL: IF clause within WHERE clause - Stack Overflow
Sep 18, 2008 · This solution is actually the best one due to how SQL server processes the boolean logic. CASE statements in where clauses are less efficient than boolean cases since if the first check fails, SQL will stop processing the line …
sql - How to find the number of days between two dates - Stack …
Jul 10, 2012 · The DATEDIFF function is use to calculate the number of days between the required date . Example if you are diff current date from given date in string format
sql - Select records based on what a field begins with ... - Stack …
In SQL-92 mode, you need the standard ANSI wild card. WHERE p.spineinjuryAdmit Like "c%" I used ALike to tell the database engine to expect ANSI wild cards. SQL-89 mode is used by DAO ... unless you've set the database option to use SQL-92 mode ("SQL Server compatible syntax). If you're running a query with ADO, it will always use SQL-92 mode.
sql - How to check which locks are held on a table - Stack Overflow
Jun 17, 2013 · There are multiple different versions of "friendlier" sp_lock procedures available online, depending on the version of SQL Server in question. In your case, for SQL Server 2005, sp_lock is still available, but deprecated, so it's now recommended to use the sys.dm_tran_locks view for this kind of thing.
sql - DISTINCT for only one column - Stack Overflow
Feb 19, 2017 · This assumes SQL Server 2005+ and your definition of "last" is the max PK for a given email WITH CTE AS ( SELECT ID, Email, ProductName, ProductModel, ROW_NUMBER() OVER (PARTITION BY Email ORDER BY ID DESC) AS RowNumber FROM Products ) SELECT ID, Email, ProductName, ProductModel FROM CTE WHERE RowNumber = 1
sql - How do I combine 2 select statements into one? - Stack …
If you're in Oracle or in MS SQL 2005 and above, then you could do: SELECT * FROM ( SELECT CASE WHEN BoolField05 = 1 THEN Status ELSE 'DELETED' END AS MyStatus, t1.*, ROW_NUMBER() OVER (PARTITION BY TextField01 ORDER BY TimeStamp DESC) AS rn FROM WorkItems t1 ) to WHERE rn = 1