Introduction In this article, we will demonstrate how to migrate MySQL tables to SQL Server using the SQL Server Migration Assistant (SSMA) and SSIS. We will give a brief introduction to MySQL and create a table. If you do not have any experience in MySQL, this tutorial will teach you your first steps. After that, […]
Introduction Most IT professionals started their studies or careers by learning programming languages like Basic, Cobol, C, Pascal, Java and so on. Those languages produce results using a sequence of operations or procedures. For this reason, this approach is called procedural programming.
The idea behind this article is to discuss the importance and the implication of SQL Partition and understand the SQL truncate command partitioning enhancements in SQL 2016 One of the biggest challenges for a DBA is to identify the right candidate for table partitioning, as it requires expertise in design and implementation.
Abstract This article explains lock issues in SQL Server with DDL statements including SELECT INTO clause. Use of explicit transaction is common in SQL Server development. Sometimes a developer might inadvertently specify a Data Definition Language clause within a long running explicit transaction, similar to the structure below, within a SQL Server object such as […]
Introduction In a previous article “SQL Server Audit feature – discovery and architecture“, we’ve seen the basics to build an auditing system based on SQL Server Audit feature. In the introduction, we talked a little bit about the « General Data Protection Regulation » a.k.a. GDPR that allows personal data circulation (in Europe) that is a subject […]
The project This is the first article of a series dedicated to discovering geographic maps in Power BI using Bubble Map and Filled Map. My goal is to illustrate to you the different visuals available in Power BI for making maps. Remember that Power BI is a product undergoing constant evolution; new features are added […]
Introduction Context As SQL Server database administrators, we should all know that, most of the time, a database user is linked to a SQL Server login. We do this to tell SQL Server that a SQL login LoginA has access to database Db1 using the context and permissions of UserA database user.
Introduction In my previous 2 articles, What is a SQL Server Deadlock and Understanding the graphical representation of the SQL Server Deadlock Graph, I discussed what a deadlock is, how SQL Server handles deadlocks, some tips on how to reduce deadlocks and ultimately what information you can glean by just looking at the graphical representation […]
Introduction There is a common need in reporting to aggregate or return data that is crunched based on date attributes. These may include weekdays, holidays, quarters, or time of year. While any of this information can be calculated on the fly, a calendar table can save time, improve performance, and increase the consistency of data […]
Introduction The title of this post should have been “How to implement wildcard search functionality with Always Encrypted, make deterministic encryption safer, and load initial data using SqlBulkInsert”, but as you understand, that’s just too long for a title.
Introduction There is a common need in reporting to aggregate or return data that is crunched based on date attributes. These may include weekdays, holidays, quarters, or time of year. While any of this information can be calculated on the fly, a calendar table can save time, improve performance, and increase the consistency of data […]
SQL Server 2016 is the most advanced version of Microsoft’s Data Platform released yet. This is obviously my favorite one as it has tremendous capabilities and enormous features. These new additions not only enhance the productivity of its users (Database Developer, DBA or Application Developer), but also enable the enterprise to use its data more […]
SQL Server 2016 obtains the values of the date and time using the GetSystemTimeAsFileTime() Windows API, with precision fixed at 100 nanoseconds. The accuracy of these date and time values depends on the hardware specs and the version of the Windows of the server on which the SQL Server instance installed.
A SQL Server Computed Column is a virtual column that is not stored physically on the table, unless it is previously specified as PERSISTED. A computed Column value is calculated using a specific expression that can be constant, function, data from other columns on the same table or a combination of these types connected together […]
JSON is an abbreviation for JavaScript Object Notation. JSON is very popular and currently the most commonly used data exchange format. Most modern web and mobile services return information formatted as JSON text, all database web services, web browsers (Firefox, Internet Explorer) return results formatted as JSON text or accept data formatted as JSON. Since […]
Today the subject of investigation is the Temporal Table, which is a new feature in SQL Server 2016. My focus will slightly be on how to use it in Data Warehouse environments, but there is some general information passing by as I write.
Introduction Microsoft SQL Server 2014 is considered to be the first version that supports Hybrid Cloud by adding a lot of exciting new features. In this article, I will cover some of the top new features in these main points including Hekaton and Hybrid Cloud enhancements:
What is a Common Table Expression A Common Table Expression, also called as CTE in short form, is a temporary named result set that you can reference within a SELECT, INSERT, UPDATE, or DELETE statement. The CTE can also be used in a View. In this article, we will see in detail about how to […]
Introduction To improve performance, it is common for DBAs to search in each aspect except analyzing storage subsystem performance even though in many times, issues are, in fact, caused by poor storage subsystem performance. Therefore, I want to give you some tools and recommendation that you can use it to prevent your storage subsystem from […]
Ever been as frustrated as I have when importing flat files to a SQL Server and the format suddenly changes in production? Commonly used integration tools (like SSIS) are very dependent on the correct, consistent and same metadata when working with flat files. So I’ve come up with an alternative solution that I would like […]
It is very beneficial to store data in SQL Server temp tables rather than manipulate or work with permanent tables. Let’s say you want full DDL or DML access to a table, but don’t have it. You can use your existing read access to pull the data into a SQL Server temporary table and make […]
Introduction From time to time, we may encounter the following scenarios when dealing with data processing:
Introduction Nowadays, most mid-size companies have implemented a Data Warehouse (DWH) solution. This DWH can be designed using a set of tools (or features) from Microsoft SQL Server. One of them is SQL Server Integration Services, also known as SSIS.
SQL Server is a very powerful tool and wherever I go, I see the tool being way much underutilized. Some people even don’t know about the features which are already in the SQL Server and they have not used it, like SQL Server Extended Events. Though, Extended Events is a way more complex and detailed […]
This article will cover the querying of temporal tables in SQL Server by using the FOR SYSTEM_TIME clause and its four sub clauses AS OF, FROM TO, BETWEEN AND, CONTAINED IN. Also, we’ll cover how to clean up the history table to keep it a manageable size.
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