> ## Documentation Index
> Fetch the complete documentation index at: https://hellocsv.mintlify.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Column Types

This section lists the available column types.

## string

**Description:**\
Basic text column.

***

## number

**Description:**\
Numeric column.

***

## boolean

**Description:**\
Boolean column.

**Additional:**\
`typeArguments?: { trueLabel?: string, falseLabel?: string }`

**Notes:**
Default true and false labels are `Yes` and `No`.

***

## reference

**Description:**\
References data from another sheet.

**Additional:**\
`typeArguments: { sheetId: string, sheetColumnId: string }`

***

## calculated

**Description:**\
Computed column value (read-only).

**Additional:**\
`typeArguments: { getValue: (row: SheetRow) => ImporterOutputFieldType }`

***

## enum

**Description:**
Column with predefined values. Supports both single-select and multi-select modes.

**Additional:**

```ts theme={null}
// Single-select (default)
typeArguments: {
  values: SelectOption<string>[];
  multiple?: false;
}

// Multi-select
typeArguments: {
  values: SelectOption<string>[];
  multiple: true;
  delimiter?: string | RegExp;  // Default: ','
}
```

**Notes:**

```ts theme={null}
export interface SelectOption<T> {
  label: ImporterOutputFieldType;
  value: T;
  icon?: ReactNode;
  group?: string;
}
```

**Multi-Select Behavior:**

* When `multiple: true`, values are stored as `string[]` instead of `string`
* CSV values are split by `delimiter` (default: comma)
* Each part is trimmed and mapped from label to value
* Display shows comma-separated labels

**Example:**

```ts theme={null}
{
  label: 'Skills',
  id: 'skills',
  type: 'enum',
  typeArguments: {
    values: [
      { label: 'JavaScript', value: 'js' },
      { label: 'Python', value: 'py' },
      { label: 'React', value: 'react' },
    ],
    multiple: true,
    delimiter: ',',
  },
}
```

For a CSV cell containing `"JavaScript, Python"`, the stored value will be `["js", "py"]`.