experimental.count() function
experimental.count() is subject to change at any time.
experimental.count() returns the number of records in each input table.
The count is returned in the _value column and counts both null and non-null records.
Counts on empty tables
experimental.count() returns 0 for empty tables.
To keep empty tables in your data, set the following parameters when using
the following functions:
filter(onEmpty: "keep")
window(createEmpty: true)
aggregateWindow(createEmpty: true)
Function type signature
(<-tables: stream[{A with _value: B}]) => stream[{A with _value: int}]
For more information, see Function type signatures.
Parameters
tables
Input data. Default is piped-forward data (<-).
Examples
Count the number of rows in a table
import "experimental"
import "sampledata"
sampledata.int()
|> experimental.count()
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