COUNT
Function COUNT is also found in the following categories: Window functions.
Syntax
Standard
Extended
COUNT( [ value ] )
COUNT( [ value ]
[ FIXED ... | INCLUDE ... | EXCLUDE ... ]
[ BEFORE FILTER BY ... ]
)
More info:
Description
Returns the number of items in the group.
Argument types:
value—Any
Return type: Integer
Examples
COUNT()
COUNT([OrderID])
Data source support
ClickHouse 19.13, Microsoft SQL Server 2017 (14.0), MySQL 5.6, Oracle Database 12c (12.1), PostgreSQL 9.3, YDB.