Prashanth Jayaram

Static and Dynamic SQL Pivot and Unpivot relational operator overview

October 12, 2018 by

In this article, we’ll walk-through the SQL Pivot and SQL Unpivot operators and how they can be useful to transpose SQL Server data. Also, we’ll discuss both static and dynamic ways to use PIVOT and UNPIVOT relational operators that can be used to transform aggregated distinct values as column(s) in the result-set by specifying all the column values in the PIVOT IN clause.

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Esat Erkec

How to add parameters to SSRS mobile reports

October 12, 2018 by

This article will explain detailed usage of parameters in mobile reports in SSRS. Parameterized reports are important because report readers want to filter and customize their report data with parameters and this option helps report readers to focus on particular data. A parameterized SSRS report uses parameters as an input value and filters the report data according to these parameters. In this article we will focus, in particular, on how to use parameters and data sources together and how can we manage the parameters in mobile SSRS reports.

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Rajendra Gupta

How to create a Word Cloud generator in Power BI Desktop

October 11, 2018 by

In this article, we’ll look at how to create a Word cloud generator in Power BI Desktop, including importing data, customization and more.

In my last article, Power BI Desktop Interactive chord diagrams, we learned about customized visualizations in Power BI Desktop. These visualizations are free to install and we can use them with our data set and customize charts as per our requirements.

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Prashanth Jayaram

Overview of the SQL Update statement

October 8, 2018 by

In this article, we’ll walk-through the SQL update statement to modify one or more existing rows in the table. 

In order to modify data in a table, we’ll use an Update statement, a DML (data manipulation language) statement. A SQL update statement comes with a SET clause where we define the column-and-value as a pair of items. In addition, you can enforce the conditional clause. In order to limit the number of rows, we’ll need to set up a where clause. The condition is defined in the where clause that identifies what rows to modify in the table.

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Prashanth Jayaram

Overview of the SQL LIKE Operator

October 2, 2018 by

In this article, we are going to learn how to use the SQL LIKE operator, in SQL Server, using regular expressions to find and/or manipulate text. We will start by learning the symbols and basic syntax of using wildcard regular expressions. We will use character sets and repetition expressions to create flexible matching patterns, and along the way, we’ll examine different ways to use the LIKE operator. And then, finally, in the latter part of the section, we will explore some of the most common and most useful regular expression examples.

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Dejan Sarka

Data understanding and preparation – grouping and aggregating data II

September 28, 2018 by

You might find the T-SQL GROUPING SETS I described in my previous article a bit complex. However, I am not done with it yet. I will show additional possibilities in this article. But before you give up on reading the article, let me tell you that I will also show a way how to make R code simpler with help of the dplyr package. Finally, I will also show some a bit more advanced techniques of aggregations in Python pandas data frame.

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Esat Erkec

Load testing for SQL Server Reporting Services (SSRS)

September 25, 2018 by

Performance monitoring is a very significant and essential topic for database or system administrators. This is no different with SSRS load testing. In some cases, performance problems can lead to significant system downtime. Most of the time in the background of the problem is having insufficient resources or improper settings. Therefore, before experiencing performance issues, we have to take some time to review preventive measures related to current system configurations or new installations. The load test (or stress test) is the most commonly used approach to tune systems before real-life staging conditions. Now we will discuss the details of load test, and in particular SSRS load testing.

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