Category Archives: mysql

MySQL – GROUP BY Clause Table of content MySQL GROUP BY Clause The GROUP BY clause in MySQL is used to arrange identical data in a table into groups. For example, let us suppose you have a table of sales data of an organization consisting of date, product, and sales amount. To calculate the total […]

MySQL – Unique Index Table of content MySQL Indexes are used to return the data from the database real quick. The users cannot see the indexes performing, instead they are just used to speed up the queries. However a unique index, in addition to speeding up data retrieval queries, is also used to maintain data […]

MySQL – Show Indexes Table of content A MySQL Index is a type of special lookup table that is used to make data retrieval easier in a database. It points to the actual data in the database. MySQL allows various types of indexes to be created on one or more columns in a table. They […]