fill
Table of Contents
Function
fill — add null values for missing record fields
Synopsis
fill(val: any, t: type) -> any
Description
The fill function adds to the input record val any fields that are
present in the output type t but not in the input. Such fields are added
after the fields already present in t and in the order they appear in the
input record.
Filled fields are added with a null value. Filling is useful when
you want to be sure that all fields in a schema are present in a record.
If val is not a record, it is returned unmodified.
✵ Tip ✵
Many users seeking the functionality of fill prefer to use the
shape function which applies the fill, cast,
and order functions simultaneously on a record.
Examples
Fill a record
fill(this, <{a:int64,b:string}>){a:1}Loading...produces
Fill an array of records
fill(this, <[{a:int64,b:int64}]>)[{a:1},{a:2}]Loading...produces
Non-records are returned unmodified
fill(this, <{a:int64,b:int64}>)10.0.0.1
1
"foo"Loading...produces