sql - SUM of COUNTS MySQL -

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i have following sql query

 select  (select count(cid) uid=45 group cid) cats  (select count(cid) uid=45) cats_total

the first sub-select produces 4 rows , counts number of items in each cid. second sub-select produces 1 row , counts numbers of items total.

my problem lies in second sub-select. sql producing error because have different amounts of rows. there adjustment can make second sub-select has 4 rows, or whatever amount of rows first sub-select produces?

update: let me clarify further table need produce

+------+------------+ | cats | cats_total | +------+------------+ |    2 |         17 | |    5 |         17 | |    1 |         17 | |    9 |         17 | +------+------------+

alternative, can use union all,

select sum(totals) grandtotal (     select count(cid) totals uid=45 group cid     union     select count(cid) totals uid=45 ) s

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