tableFind() function
The tableFind() function extracts the first table in a stream of tables whose
group key values match a predicate. If no table is found, the function errors.
tableFind(fn: (key) => key._field == "fieldName")
Parameters
Make sure fn parameter names match each specified parameter.
To learn why, see Match parameter names.
fn
A predicate function for matching keys in a table’s group key.
tableFind returns the first table that resolves as true.
Expects a key argument that represents a group key in the input stream.
Example fn function
(key) => key._field == "fieldName"
tables
Input data.
Default is piped-forward data (<-).
Example
The following example uses data provided by the sampledata package
to show how tableFind() transforms data.
import "sampledata"
t = sampledata.int()
|> tableFind(fn: (key) => key.tag == "t2")
// t represents the first table in a stream whose group key
// contains "tag" with a value of "t2".
You can use t from the example above as input for getColumn()
and getRecord().
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