Introducing the MongoDB Document
MongoDB is a document database. As such, the data is stored as individual documents. A document is a data structure made up of one or more field/value pairs.
2024-01-19
Additional Articles
Two-Dimensional Interval Packing Challenge
Packing intervals is a classic SQL task that involves packing groups of intersecting intervals to their respective continuous intervals. In mathematics, an interval is the subset of all values of a given type, e.g., integer numbers, between some low value and some high value.
2024-01-17
Eager Aggregation in SQL queries
Aggregation is a widely used way to summarize the content of a database. It is usually expressed with GROUP BY clause or just using aggregate functions (like COUNT or SUM). When the database engine executes a query with aggregations, it produces individual rows need to compute the required output and then performs the aggregation as (almost) last step. We discuss in this article how to re-write a query manually so that the order of operations will be different and when it can be beneficial.
2024-01-15
Counting more efficiently
Nearly a decade ago, I wrote a post called “Bad habits : Counting rows the hard way.” In that post, I talked about how we can use SQL Server’s metadata to instantly retrieve the row count for a table.
2024-01-12
Connecting SQL Server to SaaS applications with a Linked Server
But nowadays, most services are in the cloud. They're not on your servers; they're somewhere else. With most software-as-a-service (SAAS) offerings, you don't have many options to configure connectivity. What if you need data from one SaaS service into another?
2024-01-10
Always On Availability Groups Troubleshooting and Monitoring Guide
This guide helps you get started on troubleshooting some of the common issues in AlwaysOn Availability Groups and monitoring AlwaysOn Availability Groups. It is intended to provide original content as well as a landing page of useful information that is already published elsewhere.
2024-01-09 (first published: 2021-08-25)
Customizing Statistics Histogram in SQL Server 2019
The use of statistics in SQL Server is tightly embedded in the query optimizer and query processor. The creation and maintenance of statistics is usually handled by the SQL Server engine, though many DBAs and developers know that periodically we might need to update those statistics to ensure good performance of queries. SQL Server 2019 gives us more options.
2024-01-09 (first published: 2019-04-01)
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Data Saturday #8 - SouthWest US
This Data Saturday Event is being jointly developed by the Albuquerque Data Platform Users Group, Arizona Data Platform Users Group, and the Santa Fe Data Platform Users Groups. This event will include sessions on many Microsoft Data Platform related topics. Join us on May 15, 2021.
2024-01-09 (first published: 2021-05-14)
How to Execute SSIS Packages from SQL Server Agent
Learn about best practices for developing SSIS packages that you want to execute from SQL Server Agent and the steps to follow.
2024-01-09 (first published: 2020-12-01)
Mental Health and Wellness Day 2022
Our annual mental health and wellness day is slated to happen on 8th April 2022. We have a fantastic lineup,schedule as below. For more details on speakers and sessions refer to our blog post here.
2024-01-09 (first published: 2022-04-08)
Blogs
Scaling PowerShell – Lessons from a Technical Interview
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Recently, I was in a technical interview where the topic of running PowerShell at...
Installing Old Versions of PowerShell Modules with Their Dependencies
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I don’t recall where this came up (probably in SQLSlack), but I had a...
In Memory of Andrew Clarke, AKA Phil Factor
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One of the parts of getting older that really sucks is I seem to...
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SQL Server, Heaps and Fragmentation
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Stairway to Azure SQL Hyperscale – Level 2: Page Server Architecture Explained
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Pushing the Limits of AGs
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Question of the Day
SQL Server, Heaps and Fragmentation
A table without a clustered index (heap) will NOT suffer from fragmentation during frequent updates or deletes. True or False?
See possible answers