php - Mysql count totals multiple items by condition left join -


i trying wrap head around how achieve following without writing 5 or more database queries , 10 if statements each

i have red, blue , green widgets rated 1-10 how display how many of each in database? ie

red widgets:

  • 6 rated 1
  • 12 rated 2
  • 30 rated 3

etc

and same blue , green well?

$sql = "select unit.type, unit.condition, count(1) count left join units on site.id=unit.id site.name='name' group unit.type, unit.condition";


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