2
votes
1answer
2k views

Do you set an index on JOIN clauses or where clauses, or both?

Say my query looks like: SELECT t1, t2 FROM t1 LEFT JOIN t2 ON (t1.id = t2.id AND t2.userid = @userid) WHERE t1.enabled = 1 AND t1.startDate <= ??? AND (t1.counter = -1 OR ...
5
votes
2answers
438 views

Optimizing IP Range Search?

I have a simple query and table, and I would like to know which indexing is efficient on this kind of table and query. In my table I have 3 columns CREATE TABLE mYTable(ipFrom BIGINT, ipto BIGINT, ...