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Browsing "performance tuning"

0

Slow source? Make your data flow buffers smaller!

This blog post describes how making the data flow buffers smaller might give a performance boost in some scenarios.

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1

T-SQL Tuesday #38 – Resolving an SSIS package performance problem

This is my contribution to T-SQL Tuesday #38: Standing Firm. I describe how I resolved an SSIS package performance issue.

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SQL Advent 2012 Day 3: Sargable Queries

This is day three of the SQL Advent 2012 series of blog posts. Today we are going to look at sargable queries. You might ask yourself, what is this weird term sargable. Sargable comes from searchable argument, sometimes also referred as Search ARGument…

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Interview with Brent Ozar about the book Professional SQL Server 2008 Internals and Troubleshooting

I noticed Brent Ozar worked on a SQL book titled: Professional SQL Server 2008 Internals and Troubleshooting. This book is now available and I decided to ask Brent some questions about this book. This interview was conducted by email, enjoy. Denis: Is the book geared towards a beginner/intermediate level user or do you have to […]

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8

The SQL Server Memory Leak Confusion

Not too many moons ago when I started out with SQL Server I was convinced that there was a memory leak inside SQL Server. I ran it locally and the RAM usage just keep growing and growing until my computer was so slow that I had to restart SQL Server. This fixed things for a […]

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0

sqltrace: A Tool Every SQL Server Developer Should Have

sqtlrace is a stored procedure written by Lee Tudor (a.k.a Mr Tea.) The procedure takes an SQL batch as its first argument, sets up a trace filtered to include the current connection only, runs the batch, and summarises the trace information per statement in the batch. This can be a very handy tool to track […]

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Only In A Database Can You Get 1000% + Improvement By Changing A Few Lines Of Code

Take a look at this query. select * from ( select customer_id, ‘MTD’ as record_type, count(*), sum(…), avg(…) from payment_table where year(payment_dt) = year(getDate()) and month(payment_dt) = month(getDate()) group by customer_id) MTD_payments UNION ALL ( select customer_id, ‘YTD’ as record_type, count(*), sum(…), avg(…) from payment_table where where year(payment_dt) = year(getDate()) group by customer_id) YTD_payments UNION […]

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