an index is only useful if you're looking for a specific record/types of records. a good rule of t
an index is only useful if you're looking for a specific record/types of records.
a good rule of thumb is, if you're using a WHERE clause on anything other than the PRIMARY KEY on a query that runs often, it might be worth indexing it
if you had a column like
a good rule of thumb is, if you're using a WHERE clause on anything other than the PRIMARY KEY on a query that runs often, it might be worth indexing it
if you had a column like
user_id on ProductData, you could add an index for that column, and reduce your rows read when querying ProductData via



