The document discusses how SQL Server handles temporary tables and table variables. It notes that SQL Server truncates temporary table names to 116 characters and pads shorter names with underscores. It also appends a 12-digit numeric suffix. The document provides tips on using temporary tables versus table variables and how to optimize performance when using temporary tables.

1. Anney
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2.  tempdb.dbo.sysobjects
 tempdb.dbo.[#T]
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4.  Truncates the table name to 116 characters,
including the pound sign (#)
 Pads shorter names to 116 characters, using
underscores (_)
 Appends a 12-digit numeric suffix
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5.  Using tempdb
 Selected temptable name
 Alt+F1 or EXEC sp_help ‘temptable Name’
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9.  If you have less than 100 rows generally use
a table variable. Otherwise use a temporary
table. This is because SQL Server won't
create statistics on table variables.
 If you need to create indexes on it then you
must use a temporary table.
 When using temporary tables always create them
and create any indexes and then use them. This
will help reduce recompilations. The impact of
this is reduced starting in SQL Server 2005 but
it's still a good idea.
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10.  http://manuals.sybase.com/onlinebooks/group-a
BookTextView/19950;pt=20233
 http://www.sqlteam.com/article/temporary-table
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