mysql заміна кодування в таблицях і полях на прикладі апгрейда zabbix

Таблиці: 

SELECT CONCAT('ALTER TABLE ',
              table_schema,
              '.',
              table_name,
              ' COLLATE=utf8_bin;') AS cmd 
FROM   (SELECT table_schema, 
               table_name, 
               table_collation 
        FROM   information_schema.tables t 
        WHERE  table_schema = 'zabbix' 
               AND table_collation != 'utf8_bin') AS tables 
ORDER  BY cmd;

Поля:

SELECT CONCAT('ALTER TABLE ',
              table_schema,
              '.',
              table_name,
              ' MODIFY COLUMN ',
              column_name,
              ' ',
              column_type,
              ' CHARACTER SET utf8 COLLATE utf8_bin',
              defaultval,
              nullable,
              ';') AS cmd
FROM   (SELECT table_schema, 
               table_name, 
               column_name, 
               collation_name, 
               character_set_name, 
               column_type, 
               column_default, 
               CASE 
                 WHEN column_default IS NULL THEN '' 
                 ELSE CONCAT(' DEFAULT ''', column_default, ''' ') 
               END AS defaultval, 
               CASE 
                 WHEN is_nullable = 'NO' THEN ' NOT NULL ' 
                 ELSE '' 
               END AS nullable 
        FROM   information_schema.columns 
        WHERE  table_schema = 'zabbix' 
               AND ( collation_name != 'utf8_bin' 
                      OR character_set_name != 'utf8' )) AS cols 
ORDER  BY cmd;