Arie Nugraha napsal(a):
optimalisation requests should be supplied with result of explain and
table structure. Without that it is just guessing what may went wrong.
I Have a problem with my query that fetch about 22.000 records from
database, the query is like this :
SELECT SQL_CALC_FOUND_ROWS DISTINCT b.biblio_id, b.title,
a.author_name FROMbiblio AS b LEFT
JOIN biblio_author AS ba ON b.biblio_id=ba.biblio_id LEFT JOIN
a ON ba.author_id=a.author_id WHERE b.biblio_id IS NOT NULL GROUP BY
b.biblio_id ORDER BY b.input_date DESC LIMIT 0, 10
it took about 6 seconds to complete the query in localhost. I already
an Indexes on each table, but still the performance is slow.
Anyone have an idea how to optimize the query so result is faster?
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