MySQL: Using IF in a WHERE clause I recently needed to use an IF statment in a WHERE clause with MySQL. SELECT column_name(s) FROM table_name WHERE column_name operator value To learn more about SQL, please visit our SQL tutorial. Select and Filter Data With … The WHERE clause is used to extract only those records that fulfill a specified condition. It is 100% developed, managed, and supported by the MySQL team. MySQL 8.0.1: [Recursive] Common Table Expressions in MySQL (CTEs), Part Four – depth-first or breadth-first traversal, transitive closure, cycle avoidance Common Table Expressions To specify common table expressions, use a WITH clause that has one or more comma-separated subclauses. Une expression ou une colonne peut être baptisée avec AS.Cet alias est utilisé comme nom de colonne et peut donc être nommé dans les clauses des requêtes. CAST(expression AS TYPE); The CAST() function converts a value of any type into a value that has a specified type. Summary: in this tutorial, we will show you how to use MySQL CAST function to convert a value of any type into a value with a specified type.. Introduction to MySQL CAST function. This isn’t the most ideal situation and should probably be avoided normally but we needed to do it for one reason or another and this post shows how to do it. The syntax of the MySQL CAST() function is as follows:. Related Tags. PHP MySQL Use The WHERE Clause Previous Next Select and Filter Data From a MySQL Database. Bien que MySQL offre l'indexation FULLTEXT sur de nombreux types de tables et de colonnes, ces index FULLTEXT ne sont pas utilisés pour répondre aux requêtes utilisant LIKE. PDF - Download MySQL for free Previous Next . Oracle MySQL Database Service is a fully managed database service that enables organizations to deploy cloud native applications using the world’s most popular open source database. +-----+-----+ | Variable_name | Value | +-----+-----+ | datadir | C:\ProgramData\MySQL\MySQL Server 8.0\Data\ | +-----+-----+ 1 row in set (0.23 sec) Now follow the above path … The WHERE clause is used to filter records.