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Editorial Team
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Asked: 2026-06-09T07:03:05+00:00

my team uses SQL database for generating "daily active user" report the size of

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my team uses SQL database for generating "daily active user" report
the size of the table we search is about 7 million records, and we tried our best
to optimize our algorithm, and put index on SQL db, but still got 120 secs for
each daily report generating.

is there any way to make it faster?

any fields/keywords/books/forums that any one could recommend I could search for?

detail information

query definition:

for an user who has logged in for consecutive 7 days we counted it as "active user"
at the end of 7 days

table: login_in

record basic info for login, logout time, account id

programming language: java with seam framework

SQL db: MySQL

many thx in advance!!

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1 Answer

  1. Editorial Team

    The first step would be to do an EXPLAIN on the query that is driving the report. This can provide clues as to which part of the query are slow. You want to make sure that all parts of the query are covered by an index rather than full table access.

    See docs for EXPLAIN

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