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 votes212 views1 answer
Oracle percentage
SQL
0 vote194 views1 answer
Mysql convert charset
SQL
2 votes198 views1 answer
Get first 2 letter in sql
SQL
0 vote230 views1 answer
How to print sql query
SQL
0 vote193 views1 answer
Select value from previous row in postgresql
SQL
1 vote200 views1 answer
Sql dcl
SQL
-2 votes208 views1 answer
Modify column name in tsql
SQL
0 vote201 views1 answer
T-sql email validation
SQL
10 votes229 views4 answers
Fetch first 5 characters of the string in sql
SQL
0 vote228 views1 answer
Mysql auto increment in DD-MM-XXX format
SQL