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2. What's the difference between a temp table and table variable in...

   stackoverflow.com/questions/27894

   Temp table: A Temp table is easy to create and back up data. Table variable: But the table variable involves the effort when we usually create the normal tables. Temp table: Temp table result can be used by multiple users. Table variable: But the table variable can be used by the current user only.

3. When should I use a table variable vs temporary table in sql...

   stackoverflow.com/questions/11857789

   86. Use a table variable if for a very small quantity of data (thousands of bytes) Use a temporary table for a lot of data. Another way to think about it: if you think you might benefit from an index, automated statistics, or any SQL optimizer goodness, then your data set is probably too large for a table variable.

4. sql - Using with vs declare a temporary table: performance ...

   stackoverflow.com/questions/5435319

   from @tempTable as list. inner join @tempTable as data. ON list.dtAdmission between data.dtAdmission and DATEADD(DD,@windowDays - 1,data.dtAdmission) where list.dtAdmission >= @fromDate. GROUP BY list.dtAdmission. but I also found out that you can declare the tempTable like this: with tempTable as. (.

5. performance - CTE (Common Table Expression) vs Temp tables or...

   stackoverflow.com/questions/5310430

   Difference between CTE and Temp Table and Table Variable in SQL Server. Temp Tables are physically created in the Tempdb database. These tables act as the normal table and also can have constraints, index like normal tables. It is divided into two Local temp tables and Global Temp Table, Local Temp table are only available to the SQL Server ...

6. SQL Server tables: what is the difference between @, # and

   stackoverflow.com/questions/2219714

   141. #table refers to a local (visible to only the user who created it) temporary table. ##table refers to a global (visible to all users) temporary table. @variableName refers to a variable which can hold values depending on its type. Your definition of #table is not totally correct.

7. sql server - Difference between #temptable and ##TempTable? -...

   stackoverflow.com/questions/21011276

   You can create a Local Temporary Table with the same name but in a different connection, and it is stored with the same name along with various random values. " ##tempTable " denotes Global Temporary Tables. It starts with the single hash value "##" as the prefix of the table name and its name is always unique.

8. Local and global temporary tables in SQL Server

   stackoverflow.com/questions/2920836

   Local temp tables are only available to the SQL Server session or connection (means single user) that created the tables. These are automatically deleted when the session that created the tables has been closed. Local temporary table name is stared with single hash ("#") sign. CREATE TABLE #LocalTemp.

9. sql - Table vs Temp Table Performance - Stack Overflow

   stackoverflow.com/questions/1615246

   Avoid table variables for anything except control structures, since they prevent parallelization. Do not join your 50M row table to a table variable, use a temp table instead. Don't be afraid of cursors for iteration. Use cursor variables, and declare them with the STATIC keyword against low-cardinality columns at the front of the clustered index.

10. sql - Is there a performance difference between CTE , Sub-Query...

    stackoverflow.com/questions/11169550

    There are times when the query optimizer does better with a #temp compared to a table variable. The ability to create a PK on a #temp or table variable gives the query optimizer more information than a CTE (as you cannot declare a PK on a CTE).

11. SQL Server Temp table vs Table Variable - Stack Overflow

    stackoverflow.com/questions/6991511

    Aug 9, 2011 at 5:42. There's a mistaken belief among a lot of people that table variables are always in memory, whereas temp tables go in tempdb and hit the disk. Neither of these are strictly true (they actually both go in tempdb, both will stay in memory if possible, both will spill to disk if required)