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 JOIN: what is the difference between WHERE clause and ON clause?
SQL INNER JOIN - ON "always false" condition On the other hand, if the ON clause condition is "always false", then all the joined records are going to be filtered out and the result set will be empty.
SQL sum with condition - Stack Overflow
I currently have a large SQL statement which i add the following line to in order to get the total cash for each transaction ID (which are unique): select sum (cash) from Table a where a.branch = p.
sql - Condition within JOIN or WHERE - Stack Overflow
In "SQL Performance Tuning" by Peter Gulutzan and Trudy Pelzer, they tested multiple brands of RDBMS and found no performance difference. I prefer to keep join conditions separate from query …
What is the purpose of using WHERE 1=1 in SQL statements?
Aug 12, 2009 · Why would someone use WHERE 1=1 AND <conditions> in a SQL clause? I've seen that a lot in different query examples and it goes to probably all SQL engines. If there is a query that …
sql - Can I use CASE statement in a JOIN condition ... - Stack Overflow
Apr 21, 2012 · The following image is a part of Microsoft SQL Server 2008 R2 System Views. From the image we can see that the relationship between sys.partitions and sys.allocation_units depends on …
sql - How do I use select with date condition? - Stack Overflow
Jan 20, 2009 · In sqlserver, how do I compare dates? For example: Select * from Users where RegistrationDate >= '1/20/2009' (RegistrationDate is datetime type) Thanks
sql - Is it possible to specify condition in Count ()? - Stack Overflow
608 Is it possible to specify a condition in Count()? I would like to count only the rows that have, for example, "Manager" in the Position column.
Is having an 'OR' in an INNER JOIN condition a bad idea?
In trying to improve the speed of an immensely slow query (several minutes on two tables with only ~50,000 rows each, on SQL Server 2008 if it matters), I narrowed down the problem to an OR in my i...
sql - querying WHERE condition to character length? - Stack Overflow
The LENGTH () (MySQL) or LEN () (MSSQL) function will return the length of a string in a column that you can use as a condition in your WHERE clause. Edit I know this is really old but thought I'd …