how to set mysql database with collation utf8mb4 code example
Example: set utf8mb4 mysql tables
--For each database:
ALTER DATABASE
database_name
CHARACTER SET = utf8mb4
COLLATE = utf8mb4_unicode_ci;
--For each table:
ALTER TABLE
table_name
CONVERT TO CHARACTER SET utf8mb4
COLLATE utf8mb4_unicode_ci;
--For each column:
ALTER TABLE
table_name
CHANGE column_name column_name
VARCHAR(191)
CHARACTER SET utf8mb4
COLLATE utf8mb4_unicode_ci;