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Just a thought: You might get the same result with OR by changing the search terms.
I have no idea what difference in performance this will get out of your database. I'm quite sure there will be a difference. Talk to your DB admin. Another thing that I've learned from an Oracle guru is to avoid the LIKE operator where INSTR (other databases may call it POSITION or STRPOS) is sufficient. The reason behind that is that it is quite easy for an RDBMS to optimize (i.e. create an index) for a substring search, but LIKE most times requires a slow full table scan, operating on a search pattern. Again, talk to your DB admin.
Alexander
-- Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-) In reply to Re^3: Querying 2 Values Form 1 Column in DBIx::Class
by afoken
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