COUNT (window)
Function COUNT is also found in the following categories: Aggregate functions.
Syntax
Standard
Extended
COUNT( [ value ] TOTAL | WITHIN ... | AMONG ... [ BEFORE FILTER BY ... ] )More info:
Description
Returns the number of items in the specified window.
Argument types:
value—Any
Return type: Integer
Example
Source data
| Date | City | Category | Orders | Profit |
|---|---|---|---|---|
'2019-03-01' | 'London' | 'Office Supplies' | 8 | 120.80 |
'2019-03-04' | 'London' | 'Office Supplies' | 2 | 100.00 |
'2019-03-05' | 'London' | 'Furniture' | 1 | 750.00 |
'2019-03-02' | 'Moscow' | 'Furniture' | 2 | 1250.50 |
'2019-03-03' | 'Moscow' | 'Office Supplies' | 4 | 85.00 |
'2019-03-01' | 'San Francisco' | 'Office Supplies' | 23 | 723.00 |
'2019-03-01' | 'San Francisco' | 'Furniture' | 1 | 1000.00 |
'2019-03-03' | 'San Francisco' | 'Furniture' | 4 | 4000.00 |
'2019-03-02' | 'Detroit' | 'Furniture' | 5 | 3700.00 |
'2019-03-04' | 'Detroit' | 'Office Supplies' | 25 | 1200.00 |
'2019-03-04' | 'Detroit' | 'Furniture' | 2 | 3500.00 |
Grouped by [City], [Category].
Sorted by [City], [Category].
Result
| [City] | [Category] | SUM([Orders]) | COUNT(SUM([Orders]) TOTAL) | COUNT(SUM([Orders]) WITHIN [City]) | COUNT(SUM([Orders]) AMONG [City]) |
|---|---|---|---|---|---|
'Detroit' | 'Furniture' | 7 | 8 | 2 | 4 |
'Detroit' | 'Office Supplies' | 25 | 8 | 2 | 4 |
'London' | 'Furniture' | 1 | 8 | 2 | 4 |
'London' | 'Office Supplies' | 10 | 8 | 2 | 4 |
'Moscow' | 'Furniture' | 2 | 8 | 2 | 4 |
'Moscow' | 'Office Supplies' | 4 | 8 | 2 | 4 |
'San Francisco' | 'Furniture' | 5 | 8 | 2 | 4 |
'San Francisco' | 'Office Supplies' | 23 | 8 | 2 | 4 |
Data source support
ClickHouse 21.8, Microsoft SQL Server 2017 (14.0), MySQL 5.7, Oracle Database 12c (12.1), PostgreSQL 9.3.