mysql - GROUP BY each 6 months in one record -

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i having trouble retrieving data db through select query such:

select table.something table table.date between 'from' , 'to' group (each 6 months between , date).

any idea how can done without having recur view , external grouping through code.

something work:

select      table.something,      ceil(month(date)/6) monthvalue       table       table.date between 'from' , 'to'  group      monthvalue

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