/SQL/Sql count number of rows after group by

Sql count number of rows after group by

Sql count matching group by

# To count the number of teachers in each department, including 
# rows where COUNT(t.name) == 0
SELECT d.name,COUNT(t.name) FROM teacher t
RIGHT JOIN dept d ON (t.dept=d.id) GROUP BY d.name;

Source: sqlzoo.net

Sql count number of rows after group by

Select Count(*)
From    (
        Select ...
        From TempTable
        Group By column_1, column_2, column_3, column_4
        ) As Z

Source: stackoverflow.com

Similar codes

1 vote317 views1 answer
Convert varchar to int in sqlite
SQL
6 votes317 views1 answer
Oracle trigger after logon on schema
SQL
0 vote324 views1 answer
Sql select random procentage from rows
SQL
1 vote322 views1 answer
Oracle sql average
SQL
3 votes358 views2 answers
Savepoint in sql
SQL
4 votes305 views1 answer
Select first and last row sql
SQL
0 vote308 views1 answer
Como hacer un select entre fechas mysql
SQL
0 vote354 views1 answer
Consecutive numbers sql
SQL
4 votes275 views1 answer
Sql list users and roles
SQL
0 vote320 views1 answer
Get create sql of hibernqte entity
SQL