Con MySQL, puede usar SUM(condition)
:
SELECT id, SUM(value=0) AS n0, SUM(value=1) AS n1, COUNT(*) AS total
FROM mytable
GROUP BY id
Véalo en sqlfiddle .
Con MySQL, puede usar SUM(condition)
:
SELECT id, SUM(value=0) AS n0, SUM(value=1) AS n1, COUNT(*) AS total
FROM mytable
GROUP BY id
Véalo en sqlfiddle .