sql - MYSQL find INT in string -


i have column mediumtext contains values come goup_concat, in form of int,int,int . can call concatenated_ids

the length of string can of 1 int or more.

i need break down original values somehow able such 

select   table_country.name   table_country    table_country.country_id in (    select      concatenated_ids         table_targeted_countries          table_targeted_countries.email "%gmail.com")

and country names users registered gmail address target.

i have considered exploding mediumtext int, creating 1 row each int, sort of reverse concat, guessing take large procedure

edit:reformulated question name

you should normalize table, concated ids stored in separate table, 1 id per record. in mean time, can use mysql's find_in_set() function:

select ... find_in_set(table_country.country_id, concatenated_ids) > 0

relevant docs: http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_find-in-set


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