MySQL only get overall ROLLUP

Question

Performing a WITH ROLLUP when grouping by multiple fields, MySQL returns a rollup row for each group, as well as the overall summary:

CREATE TAB         


        

Answer 1

HAVING can do the trick with no subquery:

SELECT `name`, number, COUNT(1) FROM test GROUP BY `name`, number WITH ROLLUP 
HAVING number IS NOT NULL OR `name` IS NULL;

This filters out the post-rollup rows except for the grand total:

name    number  COUNT(1)
------  ------  --------
bar          1         1
bar          2         4
bar          3         1
baz          1         1
baz          2         1
foo          1         2
foo          2         1
foo          3         2
(NULL)  (NULL)        13