Transact-SQL (T-SQL)

How to drop table if it exists in SQL Server? How to drop stored procedure if it exists? How to drop function if it exists? Using DROP IF EXISTS.

Concatenate multiple rows into single string in SQL Server using STRING_AGG. New function STRING_AGG in SQL Server 2017 to concatinate rows of data.

TRANSLATE() is a string function introduced in SQL Server 2017. Using TRANSLATE is simple and straightforward compared to REPLACE function.

CONCAT_WS() is a new function introduced in SQL Server 2017. Here is the details on using CONCAT_WS() to concatenating strings with separator.

How to generate row number without using ORDER By clause in SQL Server. Simple technique to override the sequence ordering while using ROW_NUMEBR() function

TRIM() Function In SQL Server 2017 and equivalent custom made TRIM UDF in 2016 and older versions ti trim the spaces at the starting and ending of a string.

Similarities, differences usage of char vs varchar. Differences and similarities between char and varchar data types In SQL Server.

Similarities, differences, advantages and disadvantages of nchar vs char. Differences and similarities between char and nchar data types In SQL Server.

Similarities, differences, advantages and disadvantages of nvarchar vs varchar. Differences and similarities between varchar and nvarchar data types In SQL Server.

Difference between Temp Table, Table Variable and CTE in SQL Server. Temp Table vs Table Variable vs CTE and their usage.

Encrypting a string using hash code algorithm in sql server using the HASHBYPES function. Hash Code Encryption using MD2, MD4, MD5, SHA, SHA1, SHA 256 & 512