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] …
sql - Exclude a column using SELECT * [except columnA] FROM …
FROM TableA This very powerful SQL syntax avoids a long list of columns that must be constantly updated due to table column name changes. This functionality is missing in the …
SQL query to select dates between two dates - Stack Overflow
Feb 26, 2011 · I have a start_date and end_date. I want to get the list of dates in between these two dates. Can anyone help me pointing the mistake in my query. select Date,TotalAllowance …
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.
Convert Rows to columns using 'Pivot' in SQL Server
Apr 10, 2013 · If you are using SQL Server 2005+, then you can use the PIVOT function to transform the data from rows into columns. It sounds like you will need to use dynamic sql if …
How to run a SQL query on an Excel table? - Stack Overflow
For what I'm trying to do, the SQL query SELECT lastname, firstname, phonenumber WHERE phonenumber IS NOT NULL ORDER BY lastname would do the trick. It seems too simple for …
sql - MySQL query String contains - Stack Overflow
This will only work if your using a prepared query. If you're using an actual string in there (ex. liquibase sql upgrade script) then consider INSTR mentioned below). This is because if your …
sql server - Recover unsaved SQL query scripts - Stack Overflow
Feb 23, 2013 · How to recover the unsaved scripts if the SSMS crashes / unsaved tab gets accidentally closed?
sql server - Query to list number of records in each table in a ...
Sep 18, 2009 · This Query will return a rows result for each index on every table. Add a WHERE P.INDEX_ID IN (0,1) to limit the return result set to heaps or clustered indexes only where …
IN vs OR in the SQL WHERE clause - Stack Overflow
Jun 19, 2010 · When dealing with big databases, which performs better: IN or OR in the SQL WHERE clause? Is there any difference about the way they are executed?