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mysql select first row of each group by

Luciano I. answered on November 30, 2022 Popularity 8/10 Helpfulness 3/10

answer mysql select first row of each group by

related get first result of group by mysql

mysql select first row of each group by

Comment

SELECT m.*
FROM mytable AS m
JOIN (
  SELECT category, MIN(col_id) AS col_id
  FROM mytable 
  GROUP BY category) AS t
USING (col_id);

Popularity 8/10 Helpfulness 3/10 Language sql

Source: Grepper

Tags: each group-by mysql row select sql

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Contributed on Nov 30 2022

Luciano I.

0 Answers Avg Quality 2/10

Closely Related Answers

get first result of group by mysql

Comment

SELECT num,business_id,category_id
FROM (
    SELECT *,ROW_NUMBER() OVER(PARTITION BY category_id ORDER BY num desc) rn
    FROM (
        select count(1) num, business_id, category_id
        from mytable
        group by business_id, category_id
    ) t1
) t1
WHERE rn = 1

Popularity 7/10 Helpfulness 2/10 Language sql

Source: stackoverflow.com

Tags: get group-by mysql

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