Function first

first(_expression: Expression): Accumulator
Beta
First value of the expression in each group (aggregate).
Parameters
- _expression: Expression
Returns Accumulator
- Defined in pipelines/expressions.ts:1388
first(_fieldName: string): Accumulator
Beta
First value of the expression in each group (aggregate).
Parameters
- _fieldName: string
Returns Accumulator
- Defined in pipelines/expressions.ts:1389