Languages and coding

Esat Erkec
Implicit conversion warning in an execution plan

7 Common T-SQL Query mistakes

June 1, 2022 by

SQL (Structured Query Language) is an ANSI/ISO standard programming language that is designed to program relational databases and T-SQL (Transact-SQL) is an extended implementation of the SQL for Microsoft SQL Server databases. T-SQL is highly used by database persons when they want to program or manage the SQL Server databases. However, the beginners may do some mistakes without realizing when they write queries with SQL. In the next section of this article, we will glance at the common mistakes that may be made by newbies.

Read more »
Frank Solomon
The solution result set.

Lever the TSQL MAX/MIN/IIF functions for Pinpoint Row Pivots

May 16, 2022 by

Introduction

For a recent Tsql development project involving text document records, the customer wanted a product that would show the latest and most recent earlier version of specific document text stored in a SQL Server 2014 database. One result set row had to hold all relevant information for each document: both document versions as described above, and relevant metadata. This essentially required fine-grained row pivots. This article will describe the engineering behind the solution, and compare that solution with the SQL Server PIVOT operator.

Read more »
Nisarg Upadhyay
Drop temp table: run stored procedure

Drop temp tables in PostgreSQL

March 22, 2022 by

In this article, we are going to learn how we can drop the temp table in PostgreSQL. The temp table is used to store data temporarily. Suppose you want to format or manipulate the data using aggregate and string functions. So instead of processing and formatting the data in the base table, it is preferred to populate data from the base table and store it in a temporary table. You can process and format the data stored in a temporary table. The syntax to create a temporary table and regular table are the same. You can add indexes, constraints, statistics to the temporary tables. In this article, we are going to learn the following topics:

Read more »
Manvendra Singh
security testing for SQL Server environments

Understanding security testing for SQL Server environments

March 3, 2022 by

This article will explain various aspects of security testing for the SQL Server environment. Security is a very critical area for any database environment. We must properly plan, deploy, and audit database security measures to protect and prevent any unauthorized access of the data. We should also perform regular security testing to ensure we have the right set of rules and policies in place to secure our database environment. Database security measures also help any organization to protect its data to maintain its privacy and integrity.

Read more »
Hadi Fadlallah
Working with JIT Compiler

Getting started with SQL Server CLR functions

January 11, 2022 by

This article will explain how to create a SQL Server CLR function stored in a C# class library without creating a SQL Server database project. We will first briefly explain the concept of .NET common language runtime (CLR) and then build a C# class library using the .NET framework. Then, we will use the C# library to create user-defined CLR functions in SQL Server.

Read more »
Manvendra Singh
update multiple data fields

Getting started with the SQL UPDATE syntax

December 22, 2021 by

This article will help you understand the SQL UPDATE syntax used in SQL Server. Microsoft SQL Server is a database system that is used to store various types of data which is logically arranged in form of tables, columns, and rows. As businesses need changes or new requirements come, we need to modify this data stored in the table. We use the SQL UPDATE syntax to modify or update existing data in a table or view in SQL Server. We can use this statement to modify a single unit of data field as well as multiple sets of data fields based on our requirements.

Read more »
Manvendra Singh
Use GETDATE with DATEADD function

SQL Server GETDATE () function and its use cases

December 16, 2021 by

This article will discuss an overview and use cases of the SQL Server GETDATE () function which is used to return the current date and time of the system on which SQL Server instance is running. There are several date-time related functions in SQL Server for distinct requirements like SYSDATETIME, CURRENT_TIMESTAMP, etc. All these functions will return the current date-time of the system on which the SQL Server is running. The only difference of having these many functions is the accuracy of the length of timestamp like till what precision you want to return your date time output. I will show you the output of some of these date-time functions and compare them with SQL Server GETDATE () function.

Read more »
Daniel Calbimonte

SQL Queries in SQL Server – a beginner’s guide

December 15, 2021 by

Introduction

Creating SQL Queries is a straightforward process. This article is made in SQL Server, but most of the content can be applied to Oracle, PostgreSQL, MySQL, MariaDB and other databases with few changes. The SQL queries allow us to send queries to a database. In this article, we will have a fast, practical tutorial about doing your own queries from scratch.

Read more »
Manvendra Singh
Use case with GROUP BY statement

Understanding the SQL MIN statement and its use cases

December 3, 2021 by

Today, I will explain an overview of the SQL MIN () function along with its several use cases in this article. This function is categorized under aggregate functions in SQL Server. Aggregate functions perform a calculation on a set of values from a specified expression and return a single value in their output. Aggregate functions return the same value every time you execute them unless your source data is changed.

Read more »
Daniel Calbimonte

SQL commands in SQL Server

November 22, 2021 by

Introduction

If you are here, it means that you want to learn the SQL commands. This article applies to SQL Server especially, but most of the theory is similar to Oracle, MySQL, MariaDB, PostgreSQL, and other databases. The SQL commands are instructions that we send to the database to get information, manipulate the information or create objects, modify them, and handle the access to the information.

Read more »
Nisarg Upadhyay
SELECT Query with space in columns name without errors

How to write SQL queries with spaces in column names

September 29, 2021 by

In this article, we are going to learn how we can write a SQL query with space in the column name. Blanks spaces are restricted in the naming convention of the database object’s name and column name of the table. If you want to include the blanks space in the object name or column name, the query and application code must be written differently. You must be careful and precise while writing dynamic SQL queries. This article explains how we can handle object names and columns with blank space in SQL Server and MySQL.

Read more »
Aveek Das

Getting started with the Azure Queue Storage using Python

September 14, 2021 by

In this article, we are going to talk about the Azure Queue Storage service using python as a programming language. As it goes by the name, Azure Queue Storage is a simple queue and messaging service in Azure that can be used to build queues and process messages in an asynchronous fashion. Queues help to decouple multiple systems and provide the middle layer in a distributed architecture. The Queue Storage service in Azure allows users to connect to and store messages up to 64 KB in size from anywhere in the world. It is exposed by using HTTP or HTTPS endpoints and can contain millions of messages that need to be processed.

Read more »
Aveek Das
Creating Power BI Visuals with Python Data Frame

Working with Python in Power BI

August 26, 2021 by

In this article, we are going to learn about working with Python in Power BI. Power BI has been adding a lot of features to it recently and one of the most essential was adding Python functionality to it. Users are now able to run Python scripts directly from within Power BI. Python is a great programming language, especially when it comes to the field of data analysis. Most of the machine learning frameworks and data science libraries are written in Python and there is a huge community of open-source programmers that maintain and promote the use of Python along with these libraries.

Read more »