php - How to match entries that have commas?Get the solution ↓↓↓
This is not a recommended practice as it forces the database engine to inspect all rows of your table. It's better to create a permission table where each user that has access to a note are listed separately (make sure to also index the user column).
If you really REALLY have to, you can use the
LOCATE string function (assuming MySQL): http://dev.mysql.com/doc/refman/5.5/en/string-functions.html#function_locate
LOCATE has issues too because it doesn't care about comma delimited stuff, so the "better" approach might be
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