Category Database

The MySQL REPLACE INTO statement is a data manipulation statement that inserts a new row into a table or replaces an existing row when a duplicate value exists in a PRIMARY KEY or UNIQUE KEY column. If MySQL finds an…

The DELETE statement in MySQL deletes or removes one or more existing records (rows) from a database table. For example, you may want to delete inactive users, canceled orders, duplicate records, expired products, or old log entries from a table.…

The UPDATE statement in MySQL allows you to modify or update existing records in a database table. You can use it to update one or more column values in one record or multiple records that already exist in the table.…

The MySQL INSERT INTO statement adds a new record (row) to a database table. If you want to store data in a MySQL table, you must use the INSERT INTO statement. For example, if you have a students table and…

The DEFAULT constraint in MySQL automatically assigns a default value to a column in a table. It provides the default value when no value is specified for that column in an INSERT statement. The DEFAULT value can be a literal…