This answer had me slightly confused. What is a ‘select to a temp table’ and can someone show me a simple example of it?
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This answer had me slightly confused. What is a ‘select to a temp table’ and can someone show me a simple example of it?
A temp table is a table that exists just for the duration of the stored procedure and is commonly used to hold temporary results on the way to a final calculation.
In SQL Server, all temp tables are prefixed with a # so if you issue a statement like
Then SQL Server will automatically know that the table is temporary, and it will be destroyed when the stored procedure goes out of scope unless the table is explicitly dropped like
I commonly use them in stored procedures that run against huge tables with a high transaction volume, because I can insert the subset of data that I need into the temp table as a temporary copy and work on the data without fear of bringing down a production system if what I’m doing with the data is a fairly intense operation.
In SQL Server all temp tables live in the tempdb datase.
See this article for more information.