Sql Server Temp Table Vs Table Variable Performance
Olivia Luz
One of the comments suggested comparing these results to using a common table expression cte for similar operations.
2018 09 04 comments 7 related. So for most scripts you will most likely see the use of a sql server temp table as opposed to a table variable. Table variables also require fewer locking resources as they are private to the process and batch that created them. Summary of performance testing for sql server temp tables vs.
In one of my previous tips we looked at the sql server performance differences between using a temp table and a table variable for a few different dml operations. As we can see from the results above a temporary table generally provides better performance than a table variable. Not to say that one is more useful than the other it s just you have to choose the right tool for the job. They are easier to work with and they trigger fewer recompiles in the routines in which they re used compared to using temporary tables.
Ben snaidero updated. When you are trying to load the data the behavior of the temp table and table variable is pretty much the same. The behavior of the table variable is very poor when we are trying to select the data from it. As far as performance is concerned table variables are useful with small amounts of data like only a few rows.
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Otherwise a sql server temp table is useful when sifting through large amounts of data. The only time this is not the case is when doing an insert and a few types of delete conditions.
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