What a read asks the server for.
readonly
optional
keys: readonly string[]
An explicit key list. A key with no row contributes no result.
readonly
optional
ranges: readonly BigtableRowRange[]
Row-key ranges, unioned.
readonly
optional
filter: BigtableFilter
A server-side filter applied to every candidate row.
readonly
optional
limit: number
A server-side row cap. Omitted means unbounded.