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Seeing What Is Running Right Now

October 24, 2008
Pinal Dave
SQL Performance
DBA, SQL DMV, SQL Lock, SQL Performance, SQL Wait Stats

See what is running right now in SQL Server with request DMVs, statement text, plans, waits, and blocking details in one reusable query.

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SQL Server project new project dialog box.

SQL SERVER – Introduction to CLR – Simple Example of CLR Stored Procedure

October 19, 2008
Pinal Dave
SQL Performance
CLR, Software Development, SQL Scripts, SQL Stored Procedure, SQL Utility

An introduction to CLR in SQL Server 2005 and later, with a simple CLR Stored Procedure built in Visual Studio that prints the current system datetime.

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Execution time statistics.

SQL SERVER – Retrieve – Select Only Date Part From DateTime – Best Practice – Part 2

October 18, 2008
Pinal Dave
SQL Performance
Best Practices, SQL DateTime, SQL Function, SQL Scripts

Which way to select only date part from DATETIME is faster? After more tests on large tables, I now suggest the DATEADD and DATEDIFF method over CONVERT.

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SQL SERVER - Downgrade Database to Previous Version

SQL SERVER – Downgrade Database to Previous Version

October 16, 2008
Pinal Dave
SQL Performance
Database, Software Development

Can you downgrade database files from SQL Server 2005 to 2000? No tool does it. Install the old version, recreate the schema and move the data yourself.

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UNION result with all rows.

SQL SERVER – Introduction and Example of UNION and UNION ALL

October 15, 2008
Pinal Dave
SQL Performance
SQL Joins, SQL Scripts, SQL Union clause

A simple example of UNION and UNION ALL with two table variables. UNION removes the duplicate rows, while UNION ALL keeps every row from both tables.

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SQL SERVER - 2008 - Enhenced TRIM() Function - Remove Trailing Spaces, Leading Spaces, White Space, Tabs, Carriage Returns, Line Feeds

SQL SERVER – 2008 – Enhenced TRIM() Function – Remove Trailing Spaces, Leading Spaces, White Space, Tabs, Carriage Returns, Line Feeds

October 10, 2008
Pinal Dave
SQL Performance
SQL Function, SQL Scripts, SQL String, SQL Utility

Need to remove trailing spaces, leading spaces, tabs, carriage returns and line feeds? Here is an enhanced TRIM function built from a script by Russ and Erik.

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SQL Server execution plan.

SQL SERVER – 2008 – Find If Index is Being Used in Database

October 3, 2008
Pinal Dave
SQL Performance
SQL DMV, SQL Index, SQL Scripts

How do you find if an index is being used in your database? My quick script checks sys.dm_db_index_usage_stats, so you can drop unused indexes safely.

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