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Counting number of matches with one database query?

Hi,

I'm new to PHP and I have a question that I think has a simple answer
but I just can't figure it out so I'm really hoping that one of you
gurus can help me out.

I'm trying to return data from mysql database. I have over a thousand
records and each record has a "type" field with values ranging from 1
to 9.

I'm setting up an html table that has 9 cells and all I want to do is
count the total amount of types. For example, there are 140 records as
type 1, 300 records as type 2 etc.

Do I need to do 9 database querys or can this be done with one query?

Any and all help is appreciated!

Jul 17 '05 #1
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2 Replies
>I'm new to PHP and I have a question that I think has a simple answer
but I just can't figure it out so I'm really hoping that one of you
gurus can help me out.

I'm trying to return data from mysql database. I have over a thousand
records and each record has a "type" field with values ranging from 1
to 9.

I'm setting up an html table that has 9 cells and all I want to do is
count the total amount of types. For example, there are 140 records as
type 1, 300 records as type 2 etc.

Do I need to do 9 database querys or can this be done with one query?


select type, count(type) from mytable group by type order by type;

This has the advantage or disadvantage, depending on how you look at it,
of not returning a row for any type with NO records for it, and it also
returns rows for type 11 which is actually a mistype for type 1.

Another variant of this, good for "top 10" lists:

select type, count(type) as cnt from mytable group by type order
by cnt limit 10;

Gordon L. Burditt
Jul 17 '05 #2
Great help, thanks a lot!

Jul 17 '05 #3

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