MySQL – COALESCE() Function Table of content Sometimes a record in a table might have missing data that the user cannot fill with zeroes. In such cases, MySQL allows the user to fill that record with a NULL value. A NULL value is nothing but a placeholder in database tables to represent missing values or […]
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MySQL – Change Column Type Table of content In MySQL, users have the flexibility to modify the data type of a field. This is useful when you initially set the wrong data type for a column in a new database table, or when you need to adjust the storage size for the values in a […]
MySQL – Reset Auto-Increment Table of content Most of the tables in MySQL use sequential values to represent records, like serial numbers. Instead of manually inserting each value one by one, MySQL uses the “AUTO_INCREMENT” to handle this automatically. AUTO-INCREMENT in MySQL AUTO_INCREMENT in MySQL is used to generate unique numbers in ascending order automatically […]