mysql,postgresql,mangodb , finding max value from duplicate value in mysql


finding max value from duplicate value in mysql

Question:

Tag: mysql,postgresql,mangodb

I am having a table structure like this:

Date    Count   name
2015-03-05  154903  AAA
2015-03-04  153591  AAA
2015-03-03  151277  AAA
2015-03-06  93997   BBB
2015-03-03  93294   BBB
2015-03-02  79006   BBB
2015-03-08  77324   BBB
2015-03-06  144588  AAA
2015-03-07  144119  AAA
2015-03-02  133543  AAA
2015-03-01  124435  AAA
2015-03-08  115227  AAA
2015-03-05  98866   BBB
2015-03-04  96673   BBB
2015-03-07  96298   BBB
2015-03-01  68724   BBB
2015-03-05  55748   CCC
2015-03-01  55322   CCC

I need to find the maximum count from every value Eg.

AAA is having max value of 154903   
BBB is having max value of 98866
CCC is having max value of 55322

how query in mysql to fetch the data like this.


Answer:

Not much to it -- just use the max aggregate:

select name, max(countfield)
from yourtable
group by name

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