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• SQLAuthority News – Resolution for New Year 2011

  - by pinaldave

  Today is the first day of the year so I want to write something very light. Last Year: 2010 Last Year was a blast; really traveled a lot. My family and I went on vacation. There I enjoyed being father, rolling on the floor and playing with my daughter. Here is the list of the countries I visited throughout 2010: Singapore (twice) Malaysia (twice) Sri Lanka (thrice) Nepal (once) United States of America (twice) United Arab Emirates (UAE) (once) My daughter who just completed 1 year on September 1, 2010 has so far visited three countries: Singapore, Malaysia and Sri Lanka, where I have done lots of community activities. The list containing all my activities can be found at Pinal Dave’s Community Events. I have written nearly 380 blog posts last year. It would be difficult for me to pick a few. However, I keep a running list of all of my articles over here: All Articles on SQLAuthority.com. I have so far received more than 10,000 email questions during the year and consequently I have done my best to answer most of them. I strongly believe if one would Search SQLAuthority.com blog, they would have found the answer quickly. The best part of 2010 for me was working on SQL Server Health Check and SQL Server Performance Tuning. This Year: 2011 This year, I came up with two simple goals: 1. Personal Goal: Reduce Weight 2. Professional Goal: Stay busy for the entire year with SQL Server Performance Tuning Projects. (Currently January 2011 is booked with performance tuning projects and 40 other days are already booked throughout the year). Future The future is something one cannot exactly guess and one cannot see. I just want to wish all of you the very best for this coming New Year. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: About Me, Pinal Dave, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority News, T SQL, Technology

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• SQLAuthority News – Story of Seattle – SQLPASS 2011 Event Log

  - by pinaldave

  Just like every year I attended SQL PASS in Seattle earlier this month. The event was scheduled from Oct 11-14, 2011 in the convention center of the Seattle. I have been to Seattle more than 6 times so far so it is not a new city for me anymore. The city has always impressed me with its vibrant life and pleasant weather. Just like every other time, I had excellent experience once again in the city. Though I just arrived on the day of the event and left right after the event was over – I hardly visited Seattle – still some good experience to share. Here are few quick photographs from my quick trip of Seattle city. Skyline of Seattle Seattle Convention Center A Shop Tenzing Momo and Co at Pike St Market The Seattle Gum Wall Shoreline in Seattle Nigel and Paras First Starbucks (Relocated) People on Street of Seattle Food at Sandy’s – All Veg Well, this is a short summary of my extremely quick city tour of Seattle. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL PASS, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Author Visit, SQLAuthority News, T SQL, Technology

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• SQL SERVER – Get Free Books on While Learning SQL Server 2012 Error Handling

  - by pinaldave

  Fans of this blog are aware that I have recently released my new books SQL Server Functions and SQL Server 2012 Queries. The books are available in market in limited edition but you can avail them for free on Wednesday Nov 14, 2012. Not only they are free but you can additionally learn SQL Server 2012 Error Handling as well. My book’s co-author Rick Morelan is presenting a webinar tomorrow on SQL Server 2012 Error Handling. Here is the brief abstract of the webinar: People are often shocked when they see the demo in this talk where the first statement fails and all other statements still commit. For example, did you know that BEGIN TRAN…COMMIT TRAN is not enough to make everything work together? These mistakes can still happen to you in SQL Server 2012 if you are not aware of the options. Rick Morelan, creator of Joes2Pros, will teach you how to predict the Error Action and control it with & without structured error handling. Register for the webinar now to learn: How to predict the Error Action and control it Nuances between successful and failing SQL statements Essential SQL Server 2012 configuration options Register for the Webinar and be present during the webinar. My co-author will announce a winner (may be more than 1 winner) during the session. If you are present during the session – you are eligible to win the book. The webinar is scheduled for 2 different times to accommodate various time zones. 1) 10am ET/7am PT 2) 1pm ET/11am PT. Each webinar will have their own winner. You can increase your chances by attending both the webinars. Do not miss this opportunity and register for the webinar right now. The recordings of the webinar may not be available. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Joes 2 Pros, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority News, SQLServer, T SQL, Technology

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• SQLAuthority News – 5 days of SQL Server Reporting Service (SSRS) Summary

  - by Pinal Dave

  Earlier this week, I wrote five days series on SQL Server Reporting Service. The series is based on the book Beginning SSRS by Kathi Kellenberger. Supporting files are available with a free download from thewww.Joes2Pros.com web site. I just completed reading the book – it is a fantastic book and I am loving every bit of it. I new SSRS and I also knew how it is working however, I did not know was fine details of how I can get maximum out of the SSRS subject. This book has personally enabled me with the knowledge that I was missing in my knowledge back. Here is the question back to you – how many of you are working with SSRS and when you have a question you are left with no help online. There are not enough blogs or books available on this subject. The way Kathi has written this book is that it attempts to solve your day to day problem and make you think how you can take your daily problem and take it to the next level. Here is the article series which I have written on this subject and available to read: SQL SERVER – What is SSRS and Why SSRS is asked for in many Job Opening? Determine if SSRS 2012 is Installed on your SQL Server Installing SQL Server Data Tools and SSRS Create a Very First Report with the Report Wizard How to an Add Identity Column to Table in SQL Server Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL Tagged: Reporting Service, SSRS

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• SQL SERVER – Select Columns from Stored Procedure Resultset

  - by Pinal Dave

  It is fun to go back to basics often. Here is the one classic question: “How to select columns from Stored Procedure Resultset?” Though Stored Procedure has been introduced many years ago, the question about retrieving columns from Stored Procedure is still very popular with beginners. Let us see the solution in quick steps. First we will create a sample stored procedure. CREATE PROCEDURE SampleSP AS SELECT 1 AS Col1, 2 AS Col2 UNION SELECT 11, 22 GO Now we will create a table where we will temporarily store the result set of stored procedures. We will be using INSERT INTO and EXEC command to retrieve the values and insert into temporary table. CREATE TABLE #TempTable (Col1 INT, Col2 INT) GO INSERT INTO #TempTable EXEC SampleSP GO Next we will retrieve our data from stored procedure. SELECT * FROM #TempTable GO Finally we will clean up all the objects which we have created. DROP TABLE #TempTable DROP PROCEDURE SampleSP GO Let me know if you want me to share such back to basic tips. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Stored Procedure, SQL Tips and Tricks, T SQL

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• SQL SERVER – Function to Round Up Time to Nearest Minutes Interval

  - by pinaldave

  Though I have written more than 2300 blog posts, I always find things which I have not covered earlier in this blog post. Recently I was asked if I have written a function which rounds up or down the time based on the minute interval passed to it. Well, not earlier but it is here today. Here is a very simple example of how one can do the same. ALTER FUNCTION [dbo].[RoundTime] (@Time DATETIME, @RoundToMin INT) RETURNS DATETIME AS BEGIN RETURN ROUND(CAST(CAST(CONVERT(VARCHAR,@Time,121) AS DATETIME) AS FLOAT) * (1440/@RoundToMin),0)/(1440/@RoundToMin) END GO Above function needs two values. 1) The time which needs to be rounded up or down. 2) Time in minutes (the value passed here should be between 0 and 60 – if the value is incorrect the results will be incorrect.) Above function can be enhanced by adding functionalities like a) Validation of the parameters passed b) Accepting values like Quarter Hour, Half Hour etc. Here are few sample examples. SELECT dbo.roundtime1('17:29',30) SELECT dbo.roundtime1(GETDATE(),5) SELECT dbo.roundtime1('2012-11-02 07:27:07.000',15) When you run above code, it will return following results. Well, do you have any other way to achieve the same result? If yes, do share it here and I will be glad to share it on blog with due credit. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL DateTime, SQL Function, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• SQL SERVER – Get Directory Structure using Extended Stored Procedure xp_dirtree

  - by pinaldave

  Many years ago I wrote article SQL SERVER – Get a List of Fixed Hard Drive and Free Space on Server where I demonstrated using undocumented Stored Procedure to find the drive letter in local system and available free space. I received question in email from reader asking if there any way he can list directory structure within the T-SQL. When I inquired more he suggested that he needs this because he wanted set up backup of the data in certain structure. Well, there is one undocumented stored procedure exists which can do the same. However, please be vary to use any undocumented procedures. xp_dirtree 'C:\Windows' Execution of the above stored procedure will give following result. If you prefer you can insert the data in the temptable and use the same for further use. Here is the quick script which will insert the data into the temptable and retrieve from the same. CREATE TABLE #TempTable (Subdirectory VARCHAR(512), Depth INT); INSERT INTO #TempTable (Subdirectory, Depth) EXEC xp_dirtree 'C:\Windows' SELECT Subdirectory, Depth FROM #TempTable; DROP TABLE #TempTable; Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Stored Procedure, SQL Tips and Tricks, SQLServer, T SQL, Technology

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• SQL SERVER – Introduction to PERCENT_RANK() – Analytic Functions Introduced in SQL Server 2012

  - by pinaldave

  SQL Server 2012 introduces new analytical functions PERCENT_RANK(). This function returns relative standing of a value within a query result set or partition. It will be very difficult to explain this in words so I’d like to attempt to explain its function through a brief example. Instead of creating a new table, I will be using the AdventureWorks sample database as most developers use that for experiment purposes. Now let’s have fun following query: USE AdventureWorks GO SELECT SalesOrderID, OrderQty, RANK() OVER(ORDER BY SalesOrderID) Rnk, PERCENT_RANK() OVER(ORDER BY SalesOrderID) AS PctDist FROM Sales.SalesOrderDetail WHERE SalesOrderID IN (43670, 43669, 43667, 43663) ORDER BY PctDist DESC GO The above query will give us the following result: Now let us understand the resultset. You will notice that I have also included the RANK() function along with this query. The reason to include RANK() function was as this query is infect uses RANK function and find the relative standing of the query. The formula to find PERCENT_RANK() is as following: PERCENT_RANK() = (RANK() – 1) / (Total Rows – 1) If you want to read more about this function read here. Now let us attempt the same example with PARTITION BY clause USE AdventureWorks GO SELECT SalesOrderID, OrderQty, ProductID, RANK() OVER(PARTITION BY SalesOrderID ORDER BY ProductID ) Rnk, PERCENT_RANK() OVER(PARTITION BY SalesOrderID ORDER BY ProductID ) AS PctDist FROM Sales.SalesOrderDetail s WHERE SalesOrderID IN (43670, 43669, 43667, 43663) ORDER BY PctDist DESC GO Now you will notice that the same logic is followed in follow result set. I have now quick question to you – how many of you know the logic/formula of PERCENT_RANK() before this blog post? Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Function, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• SQL SERVER – Convert Old Syntax of RAISEERROR to THROW

  - by Pinal Dave

  I have been quite a few comments on my Facebook page and here is one of the questions which instantly caught my attention. “We have a legacy application and it has been a long time since we are using SQL Server. Recently we have upgraded to the latest version of SQL Server and we are updating our code as well. Here is the question for you, there are plenty of places we have been using old style RAISEERROR code and now we want to convert it to use THROW. Would you please suggest a sample example for the same.” Very interesting question. THROW was introduced in SQL Server 2012 to handle the error gracefully and return the error message. Let us see quickly two examples of SQL Server 2012 and earlier version. Earlier Version of SQL Server BEGIN TRY SELECT 1/0 END TRY BEGIN CATCH DECLARE @ErrorMessage NVARCHAR(2000), @ErrorSeverity INT SELECT @ErrorMessage = ERROR_MESSAGE(), @ErrorSeverity = ERROR_SEVERITY() RAISERROR (@ErrorMessage, @ErrorSeverity, 1) END CATCH SQL Server 2012 and Latest Version BEGIN TRY SELECT 1/0 END TRY BEGIN CATCH THROW END CATCH That’s it! We are done! Reference: Pinal Dave (http://blog.SQLAuthority.com)Filed under: PostADay, SQL, SQL Authority, SQL Error Messages, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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• SQLAuthority News – Free Trip on SQL Cruise

  - by pinaldave

  Everybody wants to go cruising.  I want to relax in a cruise as well, of course! (Anybody who wants to be my sponsor? Just kidding!) My family wants to go to a cruise, too. Even though I really want go to a cruise, I always wonder about one thing: what happens if I get bored on the cruise because I’d just look at the water most of the time? The best recommendation to avoid boredom on board is to travel with friends. How many friends usually accompany you when travelling? I have several good friends going on a cruise, and this is the reason why I want to go to SQL Cruise. One of them is Brent, who I consider as my friend. (Tim, you are my friend, too!) Now, we all have an opportunity to travel for free. Idera is offering a trip to SQL Cruise for FREE. To win a FREE SQL Cruise trip, you have to to do a very simple thing: just talk about How you saved the day You can tell your story via a video, photo, poem, or interpretive dance. If you refer to superheroes and Idera product, you will gain more credits to win. WHAT YOU CAN WIN: A 5-day cruise for two from Miami to Grand Cayman and Cozumel 1 seat in the SQLcruise training Airfare for two to Miami (up to $1000) Please read for further details over here. Make sure you participate and submit your entry within January 5 up to 21, 2011. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• SQL SERVER – How to Change Compatibility of Database to SQL Server 2014

  - by Pinal Dave

  Yesterday I wrote about how we can install SQL Server 2014. Right after the blog post was live, I received a question from the developer that he has installed SQL Server 2014 and attached a database file from previous version of SQL Server. Right after attaching database, he was not able to work with the latest features of Cardinality Estimation. As soon as he sent me email I realize what has happened exactly. When he attached database, the database compatibility was set to still of the earlier version of SQL Server. To use most of the latest features of SQL Server 2014, one has to change the compatibility level of the database to the latest version (i.e. 120). Here are two different ways how we can change the compatibility of database to SQL Server 2014′s version. 1) Using Management Studio For this method first to go database and right click over it. Now select properties. On this screen user can change the compatibility level to 120. 2) Using T-SQL Script. You can execute following script and change the compatibility settings to 120. USE [master] GO ALTER DATABASE [AdventureWorks2012] SET COMPATIBILITY_LEVEL = 120 GO   Well, it is that easy :-) Reference: Pinal Dave (http://blog.SQLAuthority.com)Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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• SQLAuthority News – Scaling Up Your Data Warehouse with SQL Server 2008 R2

  - by pinaldave

  Data Warehouses are suppose to be containing huge amount of the data from the beginning. However, there are cases when too big is not enough. Every Data Warehouse Admin will agree that they have faced situation where they will need to scale up their data warehouse. Microsoft has released white paper discussing the same. Here is the abstract from the Microsoft Official site: SQL Server 2008 introduced many new functional and performance improvements for data warehousing, and SQL Server 2008 R2 includes all these and more. This paper discusses how to use SQL Server 2008 R2 to get great performance as your data warehouse scales up. We present lessons learned during extensive internal data warehouse testing on a 64-core HP Integrity Superdome during the development of the SQL Server 2008 release, and via production experience with large-scale SQL Server customers. Our testing indicates that many customers can expect their performance to nearly double on the same hardware they are currently using, merely by upgrading to SQL Server 2008 R2 from SQL Server 2005 or earlier, and compressing their fact tables. We cover techniques to improve manageability and performance at high-scale, encompassing data loading (extract, transform, load), query processing, partitioning, index maintenance, indexed view (aggregate) management, and backup and restore. Scaling Up Your Data Warehouse with SQL Server 2008 R2 Reference: Pinal Dave (http://blog.SQLAuthority.com)   Filed under: PostADay, SQL, SQL Authority, SQL Documentation, SQL Download, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• SQL SERVER – Relationship with Parallelism with Locks and Query Wait – Question for You

  - by Pinal Dave

  Today, I have one very simple question based on following image. A full disclaimer is that I have no idea why it is like that. I tried to reach out to few of my friends who know a lot about SQL Server but no one has any answer. Here is the question: If you go to server properties and click on Advanced you will see the following screen. Under the Parallelism section if you noticed there are four options: Cost Threshold for Parallelism Locks Max Degree of Parallelism Query Wait I can clearly understand why Cost Threshold for Parallelism and Max Degree of Parallelism belongs to Parallelism but I am not sure why we have two other options Locks and Query Wait belongs to Parallelism section. I can see that the options are ordered alphabetically but I do not understand the reason for locks and query wait to list under Parallelism. Here is the question for you – Why Locks and Query Wait options are listed under Parallelism section in SQL Server Advanced Properties? Please leave a comment with your explanation. I will publish valid answers on this blog with due credit. Reference: Pinal Dave (http://blog.sqlauthority.com)   Filed under: PostADay, SQL, SQL Authority, SQL Puzzle, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• SQL SERVER – 2012 – List All The Column With Specific Data Types in Database

  - by pinaldave

  5 years ago I wrote script SQL SERVER – 2005 – List All The Column With Specific Data Types, when I read it again, it is very much relevant and I liked it. This is one of the script which every developer would like to keep it handy. I have upgraded the script bit more. I have included few additional information which I believe I should have added from the beginning. It is difficult to visualize the final script when we are writing it first time. I use every script which I write on this blog, the matter of the fact, I write only those scripts here which I was using at that time. It is quite possible that as time passes by my needs are changing and I change my script. Here is the updated script of this subject. If there are any user data types, it will list the same as well. SELECT s.name AS 'schema', ts.name AS TableName, c.name AS column_name, c.column_id, SCHEMA_NAME(t.schema_id) AS DatatypeSchema, t.name AS Datatypename ,t.is_user_defined, t.is_assembly_type ,c.is_nullable, c.max_length, c.PRECISION, c.scale FROM sys.columns AS c INNER JOIN sys.types AS t ON c.user_type_id=t.user_type_id INNER JOIN sys.tables ts ON ts.OBJECT_ID = c.OBJECT_ID INNER JOIN sys.schemas s ON s.schema_id = t.schema_id ORDER BY s.name, ts.name, c.column_id I would be very interested to see your script which lists all the columns of the database with data types. If I am missing something in my script, I will modify it based on your comment. This way this page will be a good bookmark for the future for all of us. Reference : Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, SQL, SQL Authority, SQL DMV, SQL Query, SQL Server, SQL System Table, SQL Tips and Tricks, T SQL, Technology

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• SQL Contest – Result of Cartoon Contest

  - by pinaldave

  Earlier we had an excellent contest ran with the help of Embarcadero Technologies. We had two different contests on the same day sponsored by the kind folks at Embarcadero. Here are the details of the winners. 1) Win USD 25 Amazon Gift Cards (10 Units) We had announced that we will award USD 25 Amazon Gift Cards to 10 lucky winners who will download the DB Optimizer between Nov 29 to Dec 8. Here is the name of the winners. Winners will get Amazon Gift Cards USD 25 in the next 5 days of this blog post to their registered email address. If you do not receive the card, do send me email (Pinal at sqlauthority.com) and I will follow up on the details. Name of the winners: Ramdas Narayanan Krishna Uppuluri Donna Kray Santosh Gupta Robert Small Samit Bhatt Bernd Baumanns Rodrigo Oriola Jim Woodin Alfred Sandou 2) Win Star Wars R2-D2 Inflatable R/C We had cartoon contest. If you have not read the cartoon – I suggest you go over this cartoon story one more time. The task was to give the correct answer with some interesting note along with it. We selected a few good quotes and put them together. We later on picked the winner by using random algorithm. The winner gets fantastic Star Wars R2-D2 Inflatable R/C. Name of the winner: Aadhar Joshi. He wins R2-D2. You can read his comment over here. Thank you all for participating in the contest – this was fun – if you have liked it do let me know and we will come up with something new for you next time. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• SQLAuthority News – #SQLPASS 2012 Book Signing Photos

  - by pinaldave

  I am at SQLPASS 2012 and the event is going great. Here are few of the random photos and random news. We had participated in three different book signing event today. SQL Queries 2012 Joes 2 Pros Book 1 Launch and Book Signing SQL 2012 Functions Book Launch at Embarcadero SQL Backup and Recovery Book Launch at Idera Rick Morelan and I authored the first two books 1) SQL 2012 Functions and 2) SQL Queries 2012 Joes 2 Pros Volume 1. Our dear friend Tim Randney authored SQL Backup and Recovery Book. In the book signing event of Tim Radney I went ahead of the time and stood in the line. I was fortunate to receive the very first copy of the autographed book from Tim Radney. We have one more book signing event of the book SQL Backup and Recovery by Tim Randey on Friday 9, 2012 between 12 to 1 PM at Joes 2 Pros booth #117. This is your last chance to shake hands with us and meet us in person. Reference: Pinal Dave (http://blog.sqlauthority.com)   Filed under: PostADay, SQL, SQL Authority, SQL PASS, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Author Visit, SQLAuthority News, T SQL, Technology

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• Big Data – Final Wrap and What Next – Day 21 of 21

  - by Pinal Dave

  In yesterday’s blog post we explored various resources related to learning Big Data and in this blog post we will wrap up this 21 day series on Big Data. I have been exploring various terms and technology related to Big Data this entire month. It was indeed fun to write about Big Data in 21 days but the subject of Big Data is much bigger and larger than someone can cover it in 21 days. My first goal was to write about the basics and I think we have got that one covered pretty well. During this 21 days I have received many questions and answers related to Big Data. I have covered a few of the questions in this series and a few more I will be covering in the next coming months. Now after understanding Big Data basics. I am personally going to do a list of the things next. I thought I will share the same with you as this will give you a good idea how to continue the journey of the Big Data. Build a schedule to read various Apache documentations Watch all Pluralsight Courses Explore HortonWorks Sandbox Start building presentation about Big Data – this is a great way to learn something new Present in User Groups Meetings on Big Data Topics Write more blog posts about Big Data I am going to continue learning about Big Data – I want you to continue learning Big Data. Please leave a comment how you are going to continue learning about Big Data. I will publish all the informative comments on this blog with due credit. I want to end this series with the infographic by UMUC. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Big Data, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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• SQLAuthority News – Download SQL Server 2012 SP1 CTP4

  - by pinaldave

  There are few trends I often see in the industry, for example i) running servers on n-1 version ii) wait till SP1 to released to adopt the product. Microsoft has recently released SQL Server 2012 SP1 CTP4. CTP stands for Community Technology Preview and it is not the final version yet. The SQL Server 2012 SP1 CTP release is available for testing purposes and use on non-production environments. What’s new for SQL Server 2012 SP1: AlwaysOn Availability Group OS Upgrade: Selective XML Index FIX: DBCC SHOW_STATISTICS works with SELECT permission New dynamic function returns statistics properties SSMS Complete in Express SlipStream Full installation Business Intelligence Excel Update You can download SQL Server 2012 SP1 CTP4 from here. SQL Server 2012 SP1 CTP4 feature pack is available for download from here. Additionally, SQL Server 2012 SP1 CTP Express is available to download as well from here. Note that SQL Server 2012 SP1 CTP has SSMS as well. Reference: Pinal Dave (http://blog.SQLAuthority.com)       Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• SQL SERVER – 2014 Announced and SQL Server 2014 Datasheet

  - by Pinal Dave

  Earlier this week Microsoft has announced SQL Server 2014. The release date of Trial of SQL Server to be believed later this year. Here are few of the improvements which I was looking forward are there in this release. Please note this is not the exhaustive list of the features of SQL Server 2014. This is the a quick note on the features which I was looking forward and now will be available in this release. Always On supports now 8 secondaries instead of 4 Online Indexing at partition level – this is a good thing as now index rebuilding can be done at a partition level Statistics at the partition level – this will be a huge improvement in performance In-Memory OLTP works by providing in-application memory storage for the most often used tables in SQL Server. (Read More Here) Columnstore Index can be updated – I just can’t wait for this feature (Columnstore Index) Resource Governor can control IO along with CPU and Memory Increase performance by extending SQL Server in-memory buffer pool to SSDs Backup to Azure Storage You can additionally download SQL Server 2014 Datasheet from here. Which is your favorite new feature of SQL Server 2014? Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• MySQL – How to Write Loop in MySQL

  - by Pinal Dave

  Since, I have written courses on MySQL, I quite often get emails about MySQL courses. Here is the question, which I have received quite often. “How do I loop queries in MySQL?” Well, currently MySQL does not allow to write loops with the help of ad-hoc SQL. You have to write stored procedure (routine) for the same. Here is the example, how we can create a procedure in MySQL which will look over the code. In this example I have used SELECT 1 statement and looped over it. In reality you can put there any code and loop over it. This procedure accepts one parameter which is the number of the count the loop will iterate itself. delimiter // CREATE PROCEDURE doiterate(p1 INT) BEGIN label1: LOOP SET p1 = p1 - 1; IF p1 > 0 THEN SELECT 1; ITERATE label1; END IF; LEAVE label1; END LOOP label1; END// delimiter ; CALL doiterate(100); You can also use WHILE to loop as well, we will see that in future blog posts. Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: MySQL, PostADay, SQL, SQL Authority, SQL Query, SQL Tips and Tricks, T SQL

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• SQL SERVER – ORDER BY ColumnName vs ORDER BY ColumnNumber

  - by pinaldave

  I strongly favor ORDER BY ColumnName. I read one of the blog post where blogger compared the performance of the two SELECT statement and come to conclusion that ColumnNumber has no harm to use it. Let us understand the point made by first that there is no performance difference. Run following two scripts together: USE AdventureWorks GO -- ColumnName (Recommended) SELECT * FROM HumanResources.Department ORDER BY GroupName, Name GO -- ColumnNumber (Strongly Not Recommended) SELECT * FROM HumanResources.Department ORDER BY 3,2 GO If you look at the result and see the execution plan you will see that both of the query will take the same amount of the time. However, this was not the point of this blog post. It is not good enough to stop here. We need to understand the advantages and disadvantages of both the methods. Case 1: When Not Using * and Columns are Re-ordered USE AdventureWorks GO -- ColumnName (Recommended) SELECT GroupName, Name, ModifiedDate, DepartmentID FROM HumanResources.Department ORDER BY GroupName, Name GO -- ColumnNumber (Strongly Not Recommended) SELECT GroupName, Name, ModifiedDate, DepartmentID FROM HumanResources.Department ORDER BY 3,2 GO Case 2: When someone changes the schema of the table affecting column order I will let you recreate the example for the same. If your development server where your schema is different than the production server, if you use ColumnNumber, you will get different results on the production server. Summary: When you develop the query it may not be issue but as time passes by and new columns are added to the SELECT statement or original table is re-ordered if you have used ColumnNumber it may possible that your query will start giving you unexpected results and incorrect ORDER BY. One should note that the usage of ORDER BY ColumnName vs ORDER BY ColumnNumber should not be done based on performance but usability and scalability. It is always recommended to use proper ORDER BY clause with ColumnName to avoid any confusion. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• SQLAuthority News – Deployment guide for Microsoft SharePoint Foundation 2010

  - by pinaldave

  SharePoint and SQL Server both goes together – hands to hand. SharePoint installation is very interesting. At various organizations, the installation is very different and have various needs. SQL Server installation with SharePoint is equally important and I have often seen that it is being neglected. Microsoft has published the Deployment Guide for SharePoint Foundation. It talks about various database aspects as well. For optimal sharepoint installation the required version of SQL Server, including service packs and cumulative updates must be installed on the database server. The installation must include any additional features, such as SQL Analysis Services, and the appropriate SharePoint Foundation logins have to be added and configured. The database server must be hardened and, if it is required, databases must be created by the DBA. For more information, see: Hardware and software requirements (SharePoint Foundation 2010) Harden SQL Server for SharePoint environments (SharePoint Foundation 2010) Deploy by using DBA-created databases (SharePoint Foundation 2010) Deployment guide for Microsoft SharePoint Foundation 2010 Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: SharePoint

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• SQL SERVER – First Month as DBA Trainee – Disasters and Recovery

  - by pinaldave

  This blog post is written in response to the T-SQL Tuesday hosted by Allen Kinsel. He has selected very interesting subject for T-SQL Tuesday – Disaster and Recovery. This subject took me in past – my past. There were various things, I had done or proposed when I started very first month as a DBA trainee. I was tagged along with very senior DBA in my organization who always protected me or correct my mistake. He was great guy and totally understand the young mind of over-enthusiastic Trainee DBA. I respect him very much. Here are few things which I had learned in my very first month (not necessarily I have practices them on production). Never compress (zip) native backup using any tools, when disaster happen sometime the extra time to un-compress the database can be too long and not acceptable for business SLA Do not truncate logs After restoring full database backup – only restore latest differential back, no need to restore all the backup Always write WHERE condition when deleting and updating Sr. DBA always advised me – always keep your résumé ready and car ready – you never know when you can not recover disaster! Well for sure it was a joke. Today’s T-SQL Tuesday remind me of my very first month as DBA trainee. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: About Me, Best Practices, Pinal Dave, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• SQL – Difference Between INNER JOIN and JOIN

  - by Pinal Dave

  Here is the follow up question to my earlier question SQL – Difference between != and Operator <> used for NOT EQUAL TO Operation. There was a pretty good discussion about this subject earlier and lots of people participated with their opinion. Though the answer was very simple but the conversation was indeed delightful and was indeed very informative. In this blog post I have another following up question to all of you. What is the difference between INNER JOIN and JOIN? If you are working with database you will find developers use above both the kinds of the joins in their SQL Queries. Here is the quick example of the same. Query using INNER JOIN SELECT * FROM Table1 INNER JOIN  Table2 ON Table1.Col1 = Table2.Col1 Query using JOIN SELECT * FROM Table1 JOIN  Table2 ON Table1.Col1 = Table2.Col1 The question is what is the difference between above two syntax. Here is the answer – They are equal to each other. There is absolutely no difference between them. They are equal in performance as well as implementation. JOIN is actually shorter version of INNER JOIN. Personally I prefer to write INNER JOIN because it is much cleaner to read and it avoids any confusion if there is related to JOIN. For example if users had written INNER JOIN instead of JOIN there would have been no confusion in mind and hence there was no need to have original question. Here is the question back to you - Which one of the following syntax do you use when you are inner joining two tables – INNER JOIN or JOIN? and Why? Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Joins, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• SQL SERVER – Download PSSDIAG Data Collection Utility

  - by pinaldave

  During an early career of mine as a database consultant – when I was dealing with SQL Server 2000, I often needed to collect various data related to SQL Server. My favorite tool to collect the data is PSSDIAG tool. It is a general purpose diagnostic collection utility that Microsoft Product Support Services uses to collect various logs and data files. It collects Performance Monitor logs, SQL Profiler traces, SQL Server blocking script output, Windows Event Logs, and SQLDIAG output. The data collected can be used by SQL Nexus tool which help you troubleshoot SQL Server performance problems. PSSDIAG is a wrapper around other data collection APIs and utilities, the performance impact of running PSSDIAG is generally equal to the impact of the traces that PSSDIAG has been configured to capture. If you are using SQL Server 2000 – you need to seriously consider to upgrading it to SQL Server 2012. Here is a PSSDIAG Data Collection Utility updated in August 2012. My friend and SQL Server Expert Amit Benerjee have written an excellent article on this subject, I encourage all of you to read the same. Note: For SQL Server 2012 there is SQLDiag. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Download, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority News, T SQL, Technology

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