Array Types

Arrays store ordered collections of elements of the same type.

Basic Arrays

interface User {  tags: string[];           // Array(String)  scores: number[];         // Array(Float64)  ids: Int32[];             // Array(Int32)  flags: boolean[];         // Array(Boolean)}

Arrays of Complex Types

Arrays can contain complex types like JSON or tuples.

import { ClickHouseNamedTuple } from "@514labs/moose-lib"; interface Event {  metadata: Record<string, any>[];    // Array(Json)  points: {    x: number;    y: number;  }[];                                 // Array of nested objects}

Type Mapping Reference

ClickHouse Type	TypeScript	Python
`Array(String)`	`string[]`	`List[str]`
`Array(Float64)`	`number[]`	`List[float]`
`Array(Int32)`	`Int32[]`	`List[int]`
`Array(Boolean)`	`boolean[]`	`List[bool]`
`Array(Json)`	`Record<string, any>[]`	`List[Dict[str, Any]]`

Nested arrays

You can nest arrays to create multi-dimensional structures: number[][] maps to Array(Array(Float64)).