SQL – INTERSECT Table of content In mathematical set theory, the intersection of two sets is a collection of values that are common to both sets. In real-time scenarios, there will be a huge number of tables in a database that contains information. The user may find it challenging to gather common information from various […]

SQL – UNION vs UNION ALL Table of content UNION and UNION ALL operators are just the SQL implementation of algebraic set operators. Both of them are used to retrieve the rows from multiple tables and return them as one single table. The difference between these two operators is that UNION only returns distinct rows […]

SQL – BETWEEN Operator Table of content The SQL BETWEEN Operator The BETWEEN operator is a logical operator in SQL, that is used to retrieve the data within a specified range. The retrieved values can be integers, characters, or dates. You can use the BETWEEN operator to replace a combination of “greater than equal AND […]