[UPHPU] get count of database records matching criteria

[Gary Thornock]

--- Richard Miller <richardkmiller at gmail.com> wrote:
> Wade,
> 
> See
http://dev.mysql.com/doc/mysql/en/group-by-functions.html#id2928089.
> I think either of these would work:
> 
> SELECT COUNT(*) FROM <table> WHERE age >= 55;
> 
> or
> 
> SELECT COUNT(age) FROM <table> WHERE age >= 55;
> 
> I couldn't tell from the manual if there is any speed difference 
> between these two statements.

SELECT COUNT(age) will be a little faster (or a lot faster, if the
table is very large).  SELECT COUNT(1) may be even faster than that.


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