I am going through the execution plan of a tsql query. There is a key LookUp (Clustered) in the plan. To avoid this Key LookUp, I tried to Include a column (Status_Ind) to The Index (The Index ...
I have a very simple query running in a SQL Server 2008 R2 instance: SELECT TOP 10 * FROM messages m INNER JOIN recipients r ON m.id = r.id WHERE m.timeStamp > '2014-07-14T00:00:00.000' AND ...
I have a large view that I use from within an application. I think I've narrowed down my performance problem, but I'm unsure how to fix it. A simplified version of the view looks like this: SELECT ...
I'm trying to optimize several queries that all use a similar pattern on one of the WHERE clauses: AND (DATEADD(DAY , ISNULL(a.[due_days], 30) + 30 , [dbo].[CalcDate]([type], ...
I have a SQL query that I have spent the past two days trying to optimise using trial-and-error and the execution plan, but to no avail. Please forgive me for doing this but I will post the entire ...
I have a large table with around 50 million rows and 15 columns. Whenever I read, I always need all columns so I can't split them. I have a clustered index on the table with 4 keys (ALL INT) and I ...
Possible Duplicate: Running queries with SQLCMD vs. Running queries with SSMS I have a number of scripts that query the data from different tables and consequently update them. I have ...
Let's examine these two statements: IF (CONDITION 1) OR (CONDITION 2) ... IF (CONDITION 3) AND (CONDITION 4) ... If CONDITION 1 is TRUE, will CONDITION 2 be checked? If CONDITION 3 is FALSE, will ...