Prashanth Jayaram

Prashanth Jayaram

Prashanth Jayaram

I’m a Database technologist having 11+ years of rich, hands-on experience on Database technologies. I am Microsoft Certified Professional and backed with a Degree in Master of Computer Application.

My specialty lies in designing & implementing High availability solutions and cross-platform DB Migration. The technologies currently working on are SQL Server, PowerShell, Oracle and MongoDB.

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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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SQL Substring function overview

September 14, 2018 by

The requirement of data refactoring is very common and vital in data mining operations. In the previous article SQL string functions for Data Munging (Wrangling), you’ll learn the tips for getting started with SQL string functions, including the SQL substring function for data munging with SQL Server. As we all agree that the data stored in one form sometimes require a transformation, we’ll take a look at some common functions or tasks for changing the case of a string, converting a value into a different type, trimming a value, and replacing a particular string in a field and so on.

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SQL Server transactional replication: How to reinitialize a subscription using a SQL Server database backup

September 13, 2018 by

A workload management is considered as a critical aspect of SQL Server transactional replication. Replication is the oldest of the high availability technologies in SQL Server and it is available since the inception of SQL Server. As a very mature technology, SQL Server transactional replication is also very robust and, in most cases, very straightforward to set up and manage.

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SQL Replication: Basic setup and configuration

September 12, 2018 by

This is article is a continuation of the previous: SQL Server replication: Overview of components and topography.

By now, you’re familiar with the components of replication. So far, we’ve seen a lot of theory about replication. It’s a time for practical walkthrough of setting up a basic transactional SQL Replication system. The best way to get a feel for how SQL Replication is implemented and how it works is to see it in action.

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How to setup a custom SQL Server transaction replication model with a Central Subscriber and Multiple Publisher databases

September 12, 2018 by

In this data-driven era, replication is often a critical requirement for achieving a modern, agile database management environment. It is believed designing an enterprise-grade dataset is the to achieving this requirement but building datamarts from datasets always presents certain challenges

In this article, we’ll discuss what it takes to setup “central subscriber with multiple publishers” replication model, to create an aggregate dataset from multiple sources, and you’ll also see how to scale with the data.

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SQL Server replication: Overview of components and topography

September 11, 2018 by

The volume of data retained, managed, and accessed today is unprecedented. Businesses expect the IT department to keep data online and accessible indefinitely, putting intense pressure on the databases required to store and manage it. To meet today’s needs; we need to replace outdated and inefficient legacy processes with new, more agile techniques. SQL Server Replication is one of the techniques to accommodate such demands.

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How to setup cross-platform transactional SQL Server replication for database reporting on Linux

August 31, 2018 by

In most cases, an organization can either use the existing out-of-the-box database replication features offered by their database software provider or invest in custom solutions to execute and manage database replication processes. The latter option sometimes allows greater flexibility to create data replicas across multiple types on multiple platforms.

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How to setup custom SQL Server transactional replication with a central publisher and multiple subscriber databases

August 29, 2018 by

In this article, you’ll learn how to setup a simple, custom distributed database replication system.

Introduction

In general, a typical setup of transactional replication model of a central publisher with multiple subscribers includes the creation of a replica database(s) which may serve multiple purposes including:

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How to continuously read Transaction log file data directly in a SQL Server database with fn_dblog and fn_dump_dblog

August 23, 2018 by

Outline

In this article, we’ll discuss how to read SQL Server transaction logs. This article should provide and insight into how the workload is being captured in the transaction log files. We are going to see how to get the transaction meta-data details and the history of the data will give us a clear idea of how the system is working and helps to decide peak usage hours, also helps to log information about who is doing what?

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How to set up a DDL and DML SQL Server database transactional replication solution

August 22, 2018 by

In the article How to setup SQL Server database replication for reporting Server we discussed all about setting up a simple SQL Server transactional replication environment. In this article, we’ll simulate a more robust system that replicates faster and includes both DDL and DML statements. We’ll walk-through the steps to setup a dynamic transactional replication.

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SQL Server database migrations with zero data loss and zero downtime

August 15, 2018 by

The growing importance and complexity of data migration, in an era of exploding data volumes and ever-changing business requirements, means that old approaches will no longer get the job done. We are in a world where everything needs to run instantly. Every Database Administrator or Developer would have definitely heard about database migrations with zero downtime and with zero data loss.

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Getting started with Azure Data Studio (ADS); initial installation and configuration

August 14, 2018 by

Microsoft Azure Data Studio is a new GUI-based (vs CLI) lightweight tool for developing and managing your modern SQL databases. The tool resembles Microsoft’s lightweight code editor, the open source IDE Visual Studio Code in terms of functionalities and the UI in general. If you’ve used Visual Studio Code (or VS Code), you’d feel at home with Azure Data Studio. Azure Data Studio also integrates really well other products like Azure SQL Database and Data Warehouse has been made very simple. Azure Data Studio is a cross-platform tool available for Linux, Windows, and Mac to manage the SQL Server databases. You can go ahead and download Microsoft Azure Data Studio to try it out!

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All about MSSQL-Scripter, the SQL Server cross-platform scripting Tool

August 14, 2018 by

One of the major challenges we face today, in the software development lifecycle, is with respect to development and deployment. As applications are deployed by moving various pieces of the SQL code between several versions, configuration, different editions, and sometimes even different platforms, deployment becomes daunting. In my opinion, scripting helps a lot and can really “grease the wheels” with addressing many scenarios that involve such complexity.

The importance of database level scripting is high, but it is getting easier by the day. Scripting is a process of generating a text file that contains the data structures and data from the database objects.

So, do we have a SQL native tool which serves the various purposes and usage? In some cases, the answer’s a yes, and in others, it’s a no.

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Continuous Database Delivery (CD) using SQL Server Tools SqlPackage.exe

August 14, 2018 by

A little curiosity on my part led me to research a little further on the available pieces of SQL Server Tools. A cross-platform tool for continuous integration and deployment, called SqlPackage, is part of SQL Server Data Tools. I picked it up because continuous integration, delivery and deployment are now must-have in the modern-day application development paradigm.

We’d talk about the following in this article:

  1. The Database Management Life Cycle
  2. Complexities of the database release management process
  3. Introduction to SQL Server Data Tools and SqlPackage
  4. Using SqlPackage.exe, with examples
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The BCP (Bulk Copy Program) command in action

August 13, 2018 by

There are various methods available for bulk data operations.

  1. BCP utility
  2. BULK INSERT
  3. Using OPENROWSET
  4. Import/Export wizard

The BCP (Bulk Copy Program) utility is a command line that program that bulk-copies data between a SQL instance and a data file using a special format file. The BCP utility can be used to import large numbers of rows into SQL Server or export SQL Server data into files. The BCP data files don’t include any schema details or format information. Hence, it is recommended to create a format file to record the data format so in case of any failures, you can refer to the format file and better understand the data format to determine what may have gone wrong..

We’ve been using the BCP tool for a long time, the reason being that it has a very low overhead, and works great for bulk exporting and importing of data. It is one of the most efficient ways to handle bulk import and export of data.

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Overview of the SQLCMD utility in SQL Server

August 13, 2018 by

This article is aimed at helping you understand the sqlcmd utility. Of course, this is a tool most of us have used it at several occasions given that the tool has been around for a decade now. However, to be a solid starting point, this article contains some examples that help you understand the tool from different viewpoints.

This article discusses the following:

  1. How to enable SQLCMD
  2. A few important points to remember
  3. SQLCMD with scripting variables in SSMS
  4. Passing variables (or argument) as T-SQL and or a SQL Script file
  5. SQLCMD with scripting variables and Windows scripting in SSMS
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