mysql - selecting multiple rows in one table with different fields -

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i have following queries:

select count(id) table_1 field_1 = 1

select count(id) table_1 field_2 = 1

select count(id) table_1 field_2 = 1

can done in single query.. 1 table use 3 outputs like:

    count(id) | count(id) | count(id)<br>     12        | 44        | 55

yes can use result using aggregate function case expression similar following:

select   sum(case when field_1 = 1 1 else 0 end) field1total,   sum(case when field_2 = 1 1 else 0 end) field2total table_1

you add more sum(case...) expression remaining items want total.


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