Sql count if

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;

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 if

COUNT(CASE WHEN <condition> THEN 1 END)

-1

Source: modern-sql.com

Sql count condition

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;

-2

Similar codes

2 votes163 views2 answers
Install postgresql
SQL
1 vote142 views4 answers
Mysqldump 1 table only
SQL
0 vote137 views1 answer
Multiple tricky query in sql server
SQL
1 vote122 views1 answer
Set statistics on in ssms
SQL
0 vote146 views2 answers
Starts and end with vowel sql
SQL
1 vote130 views1 answer
Spring postgresql reset auto increment to 0
SQL
0 vote141 views2 answers
Plsql function that return a table
SQL
0 vote139 views1 answer
Como hacer una consulta en sql
SQL
3 votes148 views1 answer
Oracle apex message quit website
SQL
0 vote136 views2 answers
Laravel: customize or extend notifications - database model
SQL