SQL - Primary Key and Surrogate Key
SQL - Normalization
SQL - Generate sequence of Numbers (Even/Odd)
SQL - PATINDEX and CHARINDEX
SQL - ACID Properties
SQL - SSMS Shortcuts
SQL - N highest value of a column in data table
SQL - Concurrency and Concurrency approaches for data access
SQL - Delete Duplicate Records
SQL - Isolation Levels in SQL server
SQL - Stored Procedures and Functions