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Temporary Tables

Temporary Table

create table #temptable {
 id int,
 name nvarchar(50)
};
select * into #temptable from UserTable;
Features
  • Table name begin with '#'
  • Table will be automatically dropped when session closed
  • Manually drop table will be suggested
  • Temporary table will be stored at database 'tempdb'
  • Different session/user can create temporary table with same table name
  • Index supported

Table Variables

declare @temptable table{
 id int,
 name nvarchar(50)
};
Features
  • Table name begin with '@'
  • Table do not need drop
  • Table data only exist in memory
  • Can not create from select statement