I have a table that will have several fields, such as counties, age_groups, gender, sports, etc..
on countries I will be storing data with this format["US","CA","DK","FI","RU","SE"]
on age groups I will be storing data with this format["2000","1999","1998"]
on age groups I will be storing data with this format["M","F"]
on age groups I will be storing data with this format["soccer","hockey", "tennis"]
Is it a bad idea/practice so store serialized/json_encoded data on mysql?