SQL
SQL WITH Clause Explained [Practical Examples]
The SQL WITH clause allows you to give the name to the output of referenced in subsequent queries, this process is interchangeably called as common table …
Concat SQL Function Explained [Practical Examples]
Concat SQL function is used to concatenate strings. difference between SQL concat and SQL concat_ws.
SQL NOT NULL Constraint Explained [Easy Examples]
The SQL NOT NULL constraint on an attribute or column specifies that the NULL value is not allowed for that attribute, in other word, the constraint in SQL …
SQL ISNULL Function Explained [Easy Examples]
SQL ISNULL is Advanced SQL function which takes two parameters first one is expression or column name and second is value which is return if expression or …
SQL Time Functions Explained [Easy Examples]
SQL Time functions can have different versions in different Database Management Systems like MySQL, ORACLE, and MS SQL Server. NOW(), CURDATE(), CURRENT_TIME(), …