Feb 23, 2014 · Global temp tables are available to all SQL Server sessions or connections (means all the user). These can be created by any SQL Server connection user and these are automatically deleted when all the SQL Server connections have been closed. Global temporary table name is stared with double hash ("##") sign.

Mar 26, 2017 · If you have an existing table with matching columns or a superset, you can also capture the types of the columns into a new temporary table called #temp_table simply by saying. select top 0 a, b, c into #temp_table from existing_table

Feb 8, 2010 · The response to @whiner by @marc_s is absolutely true: it is a prevalent myth that table variables always live in memory. It is actually quite common for a table variable to go to disk and operate just like a temp table. Anyway I suggest reading up on the set of differences by following the links pointed out by @Astander.

Mar 25, 2020 · Local temporary tables are deleted after the user disconnects from the instance of SQL Server. Global temporary tables are visible to any user and any connection after they are created, and are deleted when all users that are referencing the table disconnect from the instance of SQL Server. Taken from here. More on this

Jul 15, 2012 · Note also that any temporary table created inside a stored procedure is automatically dropped when the stored procedure finishes executing. If stored procedure A creates a temp table and calls stored procedure B, then B …

Nov 29, 2019 · The second way to create a temporary table is to use the CREATE TABLE CREATE TABLE #haro_products ( product_name VARCHAR(MAX), list_price DEC(10,2) ); – Umair Latif Commented Nov 29, 2019 at 12:41

Sep 4, 2013 · From CREATE TABLE:. Local temporary tables are visible only in the current session. and (more importantly): If a local temporary table is created in a stored procedure or application that can be executed at the same time by several users, the Database Engine must be able to distinguish the tables created by the different users [sic - almost certainly this should …

Feb 13, 2013 · A temp table's data would simply be read as any other "real" table. In the above example, the Avg(SalesTotal) calculation, in versions of SQL Server through at least 2012, will involve a completely separate operation of performing the SalesTotals aggregate a second time. While it is possible for the engine to materialize the results of the CTE ...

Dec 8, 2010 · The table is in a temp database and is only visible to the connection that created it. Once that connection is gone or the stored procedure finishes, the temp table goes away. – VenerableAgents

May 10, 2009 · @BobF for global temp table ## they are persistent only in the same sql instance if the table is left idle and the sql instance which created is destroyed then these tables are also removed. Please correct me if i am wrong