Detecting utf8 broken characters in MySQL

Question

I\'ve got a database with a bunch of broken utf8 characters scattered across several tables. The list of characters isn\'t very extensive AFAIK (áéíúóÁÉÍÓÚÑñ)

Fixing

Answer 1

This is an extension of @Thales Ceolin's answer in order to modify every table in the db:

select concat(
    "update ", 
    a.TABLE_NAME, 
    " set ", b.COLUMN_NAME, 
    " = CONVERT(BINARY CONVERT(", 
    b.COLUMN_NAME, 
    " USING latin1) USING utf8) where ",
    b.COLUMN_NAME, 
    " is not null;") query
from INFORMATION_SCHEMA.TABLES a
left join INFORMATION_SCHEMA.COLUMNS b on a.TABLE_NAME = b.TABLE_NAME
where a.table_schema = 'db_name'
and a.TABLE_TYPE = 'BASE TABLE'
and b.data_type in ('text', 'varchar')
and a.TABLE_NAME = 'table_name';

This will result in:

update table_name set idn = CONVERT(BINARY CONVERT(idn USING latin1) USING utf8) where idn is not null;
update table_nameset name = CONVERT(BINARY CONVERT(name USING latin1) USING utf8) where name is not null;
update table_name set primary_last_name = CONVERT(BINARY CONVERT(primary_last_name USING latin1) USING utf8) where primary_last_name is not null;