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 ...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 ...sql count
/*COUNT(column_name) will return the number of rows from the column
that are not NULL*/
SELECT COUNT(column_name)
FROM table_name;
/*COUNT(*) will return the number of rows from the table*/
SELECT COUNT(*)
FROM table_name;SQL only show where count is great than 1
SELECT COUNT( * )
FROM agents
HAVING COUNT(*)>1; --count is greater than 1sql count(*)
SELECT COUNT(column_name)
FROM table_name
WHERE condition;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;Copyright © 2021 Codeinu
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