sql count if

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showing results for - "sql count if"
Sofia
13 Jul 2017
1select count(case Position when 'Manager' then 1 else null end)
2from ...
3
4
5select sum(case Position when 'Manager' then 1 else 0 end)
6from ...
Noreen
08 Jan 2020
1/*COUNT(column_name) will return the number of rows from the column 
2that are not NULL*/
3SELECT COUNT(column_name)
4FROM table_name;
5
6/*COUNT(*) will return the number of rows from the table*/
7SELECT COUNT(*)
8FROM table_name;
Yannic
22 Mar 2017
1SELECT count(CASE WHEN gender = 'F' THEN 1 ELSE NULL END) women_count,
2       count(CASE WHEN gender = 'M' THEN 1 ELSE NULL END) men_count
3FROM people;
Amy
30 Oct 2020
1COUNT(CASE WHEN <condition> THEN 1 END)
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