count and where in sql code example
Example 1: sql query to get the number of rows in a table
SELECT COUNT(*) FROM tablename
Example 2: condition in count sql
select count(case Position when 'Manager' then 1 else null end)
from ...
select sum(case Position when 'Manager' then 1 else 0 end)
from ...
Example 3: sql count where
SELECT count(CASE WHEN gender = 'F' THEN 1 ELSE NULL END) women_count,
count(CASE WHEN gender = 'M' THEN 1 ELSE NULL END) men_count
FROM people;
Example 4: SQL only show where count is great than 1
SELECT COUNT( * )
FROM agents
HAVING COUNT(*)>1;