Currently Browsing: SQL Tips and Tricks
SQL Server / SSMS / Expanding Indexes List Query
Posted by Barac in SQL Server, SQL Tips and Tricks on Mar 11th, 2019 | 0 comments
Same as in previous posts examples Expanding Tables List Query and Expanding Columns List Query I usually do not notice this type of queries working in the background. But recently I end up working with a customer having DB with over 500K indexes, 150K tables and expanding indexes list operation can end up being slower than usual. Here is the code: SELECT i.name AS [Name], 'Server[@Name=' + quotename(CAST( serverproperty(N'Servername') AS sysname),'''') + ']' + '/Database[@Name=' + quotename(db_name(),'''') + ']' + '/Table[@Name=' + quotename(tbl.name,'''') + ' and @Schema=' +...
SQL Server / SSMS / Expanding Columns List Query
Posted by Barac in SQL Server, SQL Tips and Tricks on Mar 5th, 2019 | 0 comments
Same as in previous post example Expanding Tables List Query I usually do not notice this type of queries working in the background. But recently I end up working with a customer having DB with 150K tables, some of the tables have more than 500 columns, and expanding columns list operation can end up being slower than usual. Here is the code: SELECT clmns.name AS [Name], 'Server[@Name=' + quotename(CAST( serverproperty(N'Servername') AS sysname),'''') + ']' + '/Database[@Name=' + quotename(db_name(),'''') + ']' + '/Table[@Name=' + quotename(tbl.name,'''') + ' and @Schema=' +...
SQL Server / SSMS / Expanding Tables List Query
Posted by Barac in SQL Server, SQL Tips and Tricks on Mar 3rd, 2019 | 0 comments
Usually I do not even notice this query working in the background, since this operation is quite fast. But recently I end up working with a customer having DB with 150K tables, and expanding table list operation can be really slow and expensive. Here is the code: SELECT tbl.name AS [Name], SCHEMA_NAME(tbl.schema_id) AS [Schema], 'Server[@Name=' + quotename(CAST( serverproperty(N'Servername') AS sysname),'''') + ']' + '/Database[@Name=' + quotename(db_name(),'''') + ']' + '/Table[@Name=' + quotename(tbl.name,'''') + ' and @Schema=' + quotename(SCHEMA_NAME(tbl.schema_id),'''') + ']' AS [Urn],...
PowerShell / SQL Server / Generate SQL Script to Restore Multiple Transaction Logs
Posted by Barac in Powershell, SQL Server, SQL Tips and Tricks on Feb 12th, 2019 | 0 comments
Restore multiple TRN logs using PowerShell. In this example I will show you really simple way how you can use PowerShell to restore multiple logs at once. After restoring full backup WITH NORECOVERY you need to figure it out last log sequence number of the last transaction in the backup set. TRN Log backups must be restored in the order in which they were created. Log backups contain log sequence numbers (LSN), and they must be restored in that particular order. There are few ways to find last LSN. USE msdb GO SELECT TOP 10 bck.database_name , bck.first_lsn , bck.last_lsn , bck.backup_start_date ,...
Azure / SQL Server / Azure SQL Database Disaster Recovery / Orphaned Users / Different SIDs
Posted by Barac in Powershell, SQL Server, SQL Tips and Tricks on Dec 5th, 2018 | 0 comments
If you are using Azure SQL Database with geo-replication or auto failover group and if you are using logins and users rather than contained users you can end up with the following error when you try to connect to the secondary/failover database after failover occured. If you already created a login on the failover server using SQL command -- ====================================================================================== -- Create SQL Login template for Azure SQL Database and Azure SQL Data Warehouse Database --...
Azure / SQL Server / Rename an Azure SQL database
Posted by Barac in Azure, SQL Tips and Tricks on Nov 16th, 2018 | 0 comments
We had one customer who was moving his Azure SQL Database from Elastic Pool to Standalone Database. At the same time, he wanted to change database name as well. Azure database was part of an existing failover group (two elastic pools) and geo-replicated to the new future Azure SQL Server. Changing the database name is not allowed if the database is part of the replication If the database is not part of replication we can use two different approaches to rename it, using: SQL Server Management Studio or Transact-SQL Note: This refers just to users databases USING SQL Server Management...
Azure / SQL Server / This location is not available for subscription
Posted by Barac in Azure, Powershell, SQL Tips and Tricks on Oct 22nd, 2018 | 0 comments
During deployment of Azure SQL Server in Canada East location (new Azure Subscription) I got the following error: Using Azure Portal Using Powershell At the same time if I list all available azure location for the current subscription I can see that Canada East is there Get-AzureRmLocation | select displayname The reason is that Canada East region is not activated for my new Azure Subscription. To resolve this issue just contact the Azure support to have this enabled for you. You can do this for free using support page on your Azure Portal. Open a new support request ...
SQL Server / ALTER INDEX / CREATE INDEX Progress
Posted by Barac in SQL Monitoring, SQL Server, SQL Tips and Tricks on Oct 12th, 2018 | 1 comment
Creating a new and altering existing indexes on the big tables can be time-consuming. There is a simple way to see the progress of the CREATE / ALTER INDEX command. Since SQL Server 2014 we can use sys.dm_exec_query_profiles DMV to monitor real-time query progress. sys.dm_exec_query_profiles (SQL SERVER 2014 and above) “Monitors real-time query progress while the query is in execution. For example, use this DMV to determine which part of the query is running slow. Join this DMV with other system DMVs using the columns identified in the description field” The first thing we need to...
SQL Server / Long Running Queries / Email Alert
Posted by Barac in SQL Server, SQL Tips and Tricks on May 4th, 2018 | 0 comments
This is example of long running queries of database within email alert, we already had example how you can use sp_send_dbmail stored procedure from msdb database to send backup size email daily, and how to send missing indexes report via email. This is just another use case of sp_send_dbmail stored procedure. I used following arguments to achieve this @profile_name (name of an existing Database Mail profile, type sysname, default NULL), If you are not sure about your profile account use the following script, it shows all the accounts for all profiles in the instance. EXECUTE...
SQL Server / Initialize Secondary Database / Generate a full backup of the primary database using SSMS transaction log shipping GUI issue
Posted by Barac in SQL Server, SQL Tips and Tricks on Mar 13th, 2018 | 0 comments
Several time, using different SQL Server versions I end up having a problem with initializing secondary database using SSMS transaction log shipping GUI (mainly with large databases). I got errors similar to: System.Data.SqlClient.SqlError: Cannot open backup device ‘\\network_path\trnls\db01.bak’. Operating system error 5(Access is denied.). (Microsoft.SqlServer.Smo) Indicating that you don not have enough permissions. Even after I confirmed all permissions are OK, and I already have another DB using same network location successfully, still end up with same error....
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My name is Zoran, currently living in Auckland, New Zealand. I am a database specialist with more than 10 years of hands-on experience in database administration and optimisation. Also, I am a Certified Microsoft Trainer (MCT) and Microsoft Certified Solutions Expert with a Master‘s degree in Information Technology.
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