How to Change Collation in MySQL Databases, Tables, and Columns using phpMyAdmin?

Changing Collation for Databases, Tables, and Columns in PhpMyAdmin

When working with MySQL databases, it may become necessary to change the collation to ensure proper handling of character sets. This article explores various methods for altering the collation settings using PhpMyAdmin.

Changing Database Collation

To change the collation for an entire database, execute the following query:

ALTER DATABASE <database_name> CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

Note that this change only applies to new tables created within the database, leaving existing tables unaffected.

Changing Table Collation

To change the collation for a specific table, use this query:

ALTER TABLE <table_name> CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

This effectively sets the new collation for the entire table, including all its columns.

Changing Column Collation

In cases where only a specific column's collation needs to be modified, execute the following query:

ALTER TABLE <table_name> MODIFY <column_name> VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

Replace and with the actual values, and adjust the VARCHAR(255) field size as needed. This query alters the collation for the specified column while maintaining its original length.

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