C# Corner

In this article, I am going to give a quick overview of temporary tables in SQL Server 2012. local temporary table, global temporary table, drop temporary table.

Data exploration and documentation can be cumbersome, classifying data can be one of those tedious but necessary things. With the introduction of such things as GDPR there is an ever greater need t...

In this article we will see the various ways to replace null values in a table. ISNULL() function, CASE statement, COALESCE() function can be used to replace null values in a SQL Server table.

This small article is intended for the audience stuck in their interview when asked for the differences among CHAR, VARCHAR, NCHAR and NVARCHAR data types. CHAR vs VARCHAR, NCHAR vs NVARCHAR, diffe...

This article covers the fundamentals of transactions in T-SQL, from concepts such as understanding what SQL transactions are, to ACID properties, local and distributed transactions, guidelines for ...

SQL Server 2019 brings a very exciting new feature that is long overdue. Resumable Online Index Create is one of my favorite new things. This, paired with the Resumable Index Rebuilds introduced wi...

In this article you will learn about User Defined Table Types and Table-Valued Parameters. The concepts of User-Defined Table Types (UDTTs) and Table-Valued Parameters (TVPs) were introduced in SQL...

In this article you will learn about 50 Important Queries in SQL Server. EXEC sp_helpdb, exec sp_helptext, EXEC sp_updatestats, EXEC sp_MSforeachtable, SQL query for version name of SQL Server, Ena...

In this article, I described how to calculate the maximum range of various integer data types in SQL Server. TINYINT, SMALLINT, INT and BIGINT are all number data types. The difference between thes...

To learn the database, most of the times, we need to build the schema and put some data inside. But to speed up the learning and make the hands dirty in code as soon as possible, large organization...

In my recent article Using Materialized Views Effectively, I offered a few ways to populate data stores that can be critical performance-improvers for your apps and BI environments that use SQL Ser...

This article explains the row_number function in SQL Server. Ranking functions provide a very good feature of assigning numbering to the records in the result set in SQL. Row_Number is one of these...

There is always a requirement from developers: How should I store images and BLOB files in SQL Server ? In this post let's explore the data types and methods used for storing Binary Large Objec...

In this article we will learn how to use pivot and unpivot relational operator in SQL Server.

When I started learning SQL, I found out several issues, which I thought to be interesting to share. For our needs, let us use AdventureWorks2012 database, which can be obtained here.

Here, I will tell you the possible ways to return calculated Boolean values from SQL Server code. At a lot of places, you want to progress conditionally. You send some input values to the stored pr...

Hello Learners. I hope you all are doing great. This article describes the Covering Indexes and Filtered Indexes. I would like to tell you that these type of Indexes can only be created as NONCLUST...

Did you know that compression can gain you more than just space on a disk; it can allow you to fit more data into the buffer pool? That means queries have faster and more efficient reads which can ...

This article is about merging different row cells into one for the purpose of reporting. Sometimes we need to customize according to the client’s requirements.

I hope you all are doing fine. This particular article is about updating the dynamic columns on the go.