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i think you can not add count() with where. now see why ....
where is not same as having , having means you are working or dealing with group and same work of count , it is also dealing with the whole group ,
now how count it is working as whole group
create a table and enter some id's and then use:
select count(*) from table_name
you will find the total values means it is indicating some group ! so where does added with count() ;