As the server allows only one null value in a column if a unique constraint is applied. Let us learn about Unique Indexes on Nullable Columns.
SQL SERVER – Difference Between ISNULL and COALESCE
SQL Server provides two commonly used functions, ISNULL and COALESCE, to address this requirement. Difference Between ISNULL and COALESCE
SQL SERVER – CONVERT Empty String To Null DateTime
Let us learn today how to CONVERT Empty String To Null DateTime. While I focus on SQL Server Performance Health Check, let us learn about it today.
SQL SERVER – Adding Values Containing NULLs
Today we will see a very simple blog post about Adding Values Containing NULLs. During the consulting engagement of Health Check.
SQL SERVER – NULL Values and CONCAT Function
A lot of SQL in the Sixty Seconds video recently, we will be looking at a very interesting T-SQL CONCAT function and how it works with the NULL Values.
SQL Puzzle – Solution to Strange Results – IN and IS NOT NULL –
Earlier I had published a blog post about a puzzle SQL Puzzle – IN and IS NOT NULL – Strange Results. Today we will see a solution to strange results puzzle.
SQL SERVER – Adding Default Value to Existing Table
While my primary focus is on SQL Server Performance Tuning, we will see questions related to adding default value to the existing table.