Though duplicate rows are bad practice, sometimes they're necessary for a short time. But how do you clean your tables when they're no longer needed? Sergey Gigoyan provides a few different solutions.
2016-11-09
3,155 reads
Tables used purely for reporting sometimes lack a unique identifier. Find out how to remove duplicates from such a table when data loads go bad.
2016-11-08
6,959 reads
So you’re hosting your SQL Server in the cloud, and you’ve noticed that when you’re running a backup or a DBCC CHECKDB, you suffer from extreme performance problems - what's going on? Brent Ozar explains.
2016-11-08
3,699 reads
On a not-so-busy day, I received an alert saying tempdb has grown to 90 percent of the drive size and there is only 10 percent space left on the drive. The server is a SQL Server 2014 instance and hosts AlwaysOn secondary databases.
2016-11-07
21,522 reads
Power BI has a lot of uses, but one of the most interesting of them is to model and shape data to make it easier for self-service BI. Power BI is a full-stack solution that includes data loading, data modelling, metrics, reporting and distribution. It can take the source data, and perform in-process data modelling relatively easily as well a providing an easy to use and powerful user interface for analytics and reporting.
2016-11-07
4,912 reads
Read and document multiple SSIS packages in an Excel file. The document can be used to do further code analysis.
2016-11-04 (first published: 2015-09-01)
18,743 reads
Developing JavaScript for web pages can be perplexing. You will get errors that seem to make no sense, You will be given nuggets of advice about how and when you can use JavaScript to manipulate the DOM or make Ajax requests. It is far better to understand the reason for these rules; the single-threaded nature of JavaScript, and how it loads the page and manages the event loop. How can you achieve parallel processing and what is the best way? Igor makes it all clear and obvious.
2016-11-04
3,714 reads
Erik Darling looks at SET STATISTICS TIME ON and SET STATISTICS IO ON as potential tools for troubleshooting a query.
2016-11-03
3,174 reads
Stored procedures allow the DBA to automate a certain task by bundling up a query and executing as a single set of logic. This is considerable progress in including more automation, but why not automate the automation? Adam Bertram explains how.
2016-11-02
4,333 reads
Moving security changes between server instances can be a cumbersome process, but it doesn't need to be with the PowerShell cmdlet, Copy-SqlLogin.
2016-11-01
2,295 reads
Every organization I talk to has the same problem dressed up in different clothes....
By DataOnWheels
I am delighted to host this month’s T-SQL Tuesday invitation. If you are new...
By alevyinroc
Ten years (and a couple jobs) ago, I wrote about naming default constraints to...
Comments posted to this topic are about the item The day-to-day pressures of a...
Comments posted to this topic are about the item Using OPENJSON
Comments posted to this topic are about the item Data Modeling with dbt for...
I have some data in a table that looks like this:
BeerID BeerName brewer beerdescription 1 Becks Interbrew Beck's is a German-style pilsner beer 2 Fat Tire New Belgium Toasty malt, gentle sweetness, flash of fresh hop bitterness. 3 Mac n Jacks Mac & Jack's Brewery This beer erupts with a floral, hoppy taste 4 Alaskan Amber Alaskan Brewing Alaskan Brewing Amber Ale is an "alt" style beer 8 Kirin Kirin Brewing Kirin Ichiban is a Lager-type beerIf I run this, what is returned?
select t1.key
from openjson((select t.* FROM Beer AS t for json path)) t1 See possible answers