# Structured Sheets

## List structured sheets

`client.StructuredSheets.List(ctx, query) (*CursorIDPage[StructuredSheetResponse], error)`

**get** `/v1/structured-sheets`

List all structured sheets conversions for the authenticated user. Results are paginated using cursor-based pagination.

### Parameters

- `query StructuredSheetListParams`

  - `After param.Field[string]`

    A cursor for pagination. Use the `last_id` from a previous response to fetch the next page of results.

  - `Limit param.Field[int64]`

    Maximum number of results to return per page.

### Returns

- `type StructuredSheetResponse struct{…}`

  Response representing a structured sheet conversion job.

  This is returned from POST (create), GET (retrieve), and list endpoints.

  - `ID string`

    The unique identifier for this structured sheet conversion.

  - `CreatedAt Time`

    The timestamp when the conversion was started.

  - `FileID string`

    The unique identifier for the source file.

  - `Object StructuredSheet`

    The object type, which is always 'structured_sheet'.

    - `const StructuredSheetStructuredSheet StructuredSheet = "structured_sheet"`

  - `Status StructuredSheetResponseStatus`

    The current processing status.

    - `const StructuredSheetResponseStatusQueued StructuredSheetResponseStatus = "queued"`

    - `const StructuredSheetResponseStatusInProgress StructuredSheetResponseStatus = "in_progress"`

    - `const StructuredSheetResponseStatusCompleted StructuredSheetResponseStatus = "completed"`

    - `const StructuredSheetResponseStatusFailed StructuredSheetResponseStatus = "failed"`

    - `const StructuredSheetResponseStatusCancelled StructuredSheetResponseStatus = "cancelled"`

  - `UpdatedAt Time`

    The timestamp when the conversion was last updated.

  - `LastError StructuredSheetResponseLastError`

    Error information when processing fails.

    - `Code string`

      A machine-readable error code.

    - `Message string`

      A human-readable description of the error.

  - `SheetNames []string`

    List of sheet names included in this conversion.

  - `TableCount int64`

    Number of tables extracted from the workbook. Only present when status is 'completed'.

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/deeptable-com/deeptable-go"
  "github.com/deeptable-com/deeptable-go/option"
)

func main() {
  client := deeptable.NewClient(
    option.WithAPIKey("My API Key"),
  )
  page, err := client.StructuredSheets.List(context.TODO(), deeptable.StructuredSheetListParams{

  })
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", page)
}
```

#### Response

```json
{
  "data": [
    {
      "id": "ss_01kfxgjd94fn9stqm42nejb627",
      "created_at": "2024-01-15T10:30:00Z",
      "file_id": "file_01kfxgjd94fn9stqm414vjb0s8",
      "object": "structured_sheet",
      "status": "completed",
      "updated_at": "2024-01-15T10:35:00Z",
      "last_error": {
        "code": "invalid_file_format",
        "message": "The uploaded file is not a valid Excel spreadsheet."
      },
      "sheet_names": [
        "Sheet1",
        "Financials"
      ],
      "table_count": 6
    }
  ],
  "has_more": false,
  "object": "list",
  "first_id": "ss_01kfxgjd94fn9stqm42nejb627",
  "last_id": "ss_01kfxgjd94fn9stqm42nejb627"
}
```

## Create structured sheet

`client.StructuredSheets.New(ctx, body) (*StructuredSheetResponse, error)`

**post** `/v1/structured-sheets`

Start converting a spreadsheet workbook into structured data. This initiates an asynchronous conversion process. Poll the returned resource using the `id` to check completion status.

### Parameters

- `body StructuredSheetNewParams`

  - `FileID param.Field[string]`

    The unique identifier of the file to convert.

  - `SheetNames param.Field[[]string]`

    List of sheet names to convert. If None, all sheets will be converted.

### Returns

- `type StructuredSheetResponse struct{…}`

  Response representing a structured sheet conversion job.

  This is returned from POST (create), GET (retrieve), and list endpoints.

  - `ID string`

    The unique identifier for this structured sheet conversion.

  - `CreatedAt Time`

    The timestamp when the conversion was started.

  - `FileID string`

    The unique identifier for the source file.

  - `Object StructuredSheet`

    The object type, which is always 'structured_sheet'.

    - `const StructuredSheetStructuredSheet StructuredSheet = "structured_sheet"`

  - `Status StructuredSheetResponseStatus`

    The current processing status.

    - `const StructuredSheetResponseStatusQueued StructuredSheetResponseStatus = "queued"`

    - `const StructuredSheetResponseStatusInProgress StructuredSheetResponseStatus = "in_progress"`

    - `const StructuredSheetResponseStatusCompleted StructuredSheetResponseStatus = "completed"`

    - `const StructuredSheetResponseStatusFailed StructuredSheetResponseStatus = "failed"`

    - `const StructuredSheetResponseStatusCancelled StructuredSheetResponseStatus = "cancelled"`

  - `UpdatedAt Time`

    The timestamp when the conversion was last updated.

  - `LastError StructuredSheetResponseLastError`

    Error information when processing fails.

    - `Code string`

      A machine-readable error code.

    - `Message string`

      A human-readable description of the error.

  - `SheetNames []string`

    List of sheet names included in this conversion.

  - `TableCount int64`

    Number of tables extracted from the workbook. Only present when status is 'completed'.

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/deeptable-com/deeptable-go"
  "github.com/deeptable-com/deeptable-go/option"
)

func main() {
  client := deeptable.NewClient(
    option.WithAPIKey("My API Key"),
  )
  structuredSheetResponse, err := client.StructuredSheets.New(context.TODO(), deeptable.StructuredSheetNewParams{
    FileID: "file_01h45ytscbebyvny4gc8cr8ma2",
  })
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", structuredSheetResponse.ID)
}
```

#### Response

```json
{
  "id": "ss_01kfxgjd94fn9stqm42nejb627",
  "created_at": "2024-01-15T10:30:00Z",
  "file_id": "file_01kfxgjd94fn9stqm414vjb0s8",
  "object": "structured_sheet",
  "status": "completed",
  "updated_at": "2024-01-15T10:35:00Z",
  "last_error": {
    "code": "invalid_file_format",
    "message": "The uploaded file is not a valid Excel spreadsheet."
  },
  "sheet_names": [
    "Sheet1",
    "Financials"
  ],
  "table_count": 6
}
```

## Delete structured sheet

`client.StructuredSheets.Delete(ctx, structuredSheetID) (*StructuredSheetDeleteResponse, error)`

**delete** `/v1/structured-sheets/{structured_sheet_id}`

Delete a structured sheet conversion and its associated exports. This action cannot be undone.

### Parameters

- `structuredSheetID string`

  The unique identifier of the structured sheet conversion.

### Returns

- `type StructuredSheetDeleteResponse struct{…}`

  Response from deleting a structured sheet.

  Following the OpenAI API convention for delete responses.

  - `ID string`

    The unique identifier of the deleted structured sheet.

  - `Deleted bool`

    Whether the structured sheet was successfully deleted.

    - `const StructuredSheetDeleteResponseDeletedTrue StructuredSheetDeleteResponseDeleted = true`

  - `Object StructuredSheet`

    The object type, which is always 'structured_sheet'.

    - `const StructuredSheetStructuredSheet StructuredSheet = "structured_sheet"`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/deeptable-com/deeptable-go"
  "github.com/deeptable-com/deeptable-go/option"
)

func main() {
  client := deeptable.NewClient(
    option.WithAPIKey("My API Key"),
  )
  structuredSheet, err := client.StructuredSheets.Delete(context.TODO(), "ss_01kfxgjd94fn9stqm42nejb627")
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", structuredSheet.ID)
}
```

#### Response

```json
{
  "id": "ss_01kfxgjd94fn9stqm42nejb627",
  "deleted": true,
  "object": "structured_sheet"
}
```

## Retrieve structured sheet

`client.StructuredSheets.Get(ctx, structuredSheetID) (*StructuredSheetResponse, error)`

**get** `/v1/structured-sheets/{structured_sheet_id}`

Get the status and details of a structured sheet conversion.

### Parameters

- `structuredSheetID string`

  The unique identifier of the structured sheet conversion.

### Returns

- `type StructuredSheetResponse struct{…}`

  Response representing a structured sheet conversion job.

  This is returned from POST (create), GET (retrieve), and list endpoints.

  - `ID string`

    The unique identifier for this structured sheet conversion.

  - `CreatedAt Time`

    The timestamp when the conversion was started.

  - `FileID string`

    The unique identifier for the source file.

  - `Object StructuredSheet`

    The object type, which is always 'structured_sheet'.

    - `const StructuredSheetStructuredSheet StructuredSheet = "structured_sheet"`

  - `Status StructuredSheetResponseStatus`

    The current processing status.

    - `const StructuredSheetResponseStatusQueued StructuredSheetResponseStatus = "queued"`

    - `const StructuredSheetResponseStatusInProgress StructuredSheetResponseStatus = "in_progress"`

    - `const StructuredSheetResponseStatusCompleted StructuredSheetResponseStatus = "completed"`

    - `const StructuredSheetResponseStatusFailed StructuredSheetResponseStatus = "failed"`

    - `const StructuredSheetResponseStatusCancelled StructuredSheetResponseStatus = "cancelled"`

  - `UpdatedAt Time`

    The timestamp when the conversion was last updated.

  - `LastError StructuredSheetResponseLastError`

    Error information when processing fails.

    - `Code string`

      A machine-readable error code.

    - `Message string`

      A human-readable description of the error.

  - `SheetNames []string`

    List of sheet names included in this conversion.

  - `TableCount int64`

    Number of tables extracted from the workbook. Only present when status is 'completed'.

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/deeptable-com/deeptable-go"
  "github.com/deeptable-com/deeptable-go/option"
)

func main() {
  client := deeptable.NewClient(
    option.WithAPIKey("My API Key"),
  )
  structuredSheetResponse, err := client.StructuredSheets.Get(context.TODO(), "ss_01kfxgjd94fn9stqm42nejb627")
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", structuredSheetResponse.ID)
}
```

#### Response

```json
{
  "id": "ss_01kfxgjd94fn9stqm42nejb627",
  "created_at": "2024-01-15T10:30:00Z",
  "file_id": "file_01kfxgjd94fn9stqm414vjb0s8",
  "object": "structured_sheet",
  "status": "completed",
  "updated_at": "2024-01-15T10:35:00Z",
  "last_error": {
    "code": "invalid_file_format",
    "message": "The uploaded file is not a valid Excel spreadsheet."
  },
  "sheet_names": [
    "Sheet1",
    "Financials"
  ],
  "table_count": 6
}
```

## Cancel structured sheet processing

`client.StructuredSheets.Cancel(ctx, structuredSheetID) (*StructuredSheetResponse, error)`

**post** `/v1/structured-sheets/{structured_sheet_id}/cancel`

Cancel a structured sheet conversion that is in progress. Only jobs with status 'queued' or 'in_progress' can be cancelled.

### Parameters

- `structuredSheetID string`

  The unique identifier of the structured sheet conversion.

### Returns

- `type StructuredSheetResponse struct{…}`

  Response representing a structured sheet conversion job.

  This is returned from POST (create), GET (retrieve), and list endpoints.

  - `ID string`

    The unique identifier for this structured sheet conversion.

  - `CreatedAt Time`

    The timestamp when the conversion was started.

  - `FileID string`

    The unique identifier for the source file.

  - `Object StructuredSheet`

    The object type, which is always 'structured_sheet'.

    - `const StructuredSheetStructuredSheet StructuredSheet = "structured_sheet"`

  - `Status StructuredSheetResponseStatus`

    The current processing status.

    - `const StructuredSheetResponseStatusQueued StructuredSheetResponseStatus = "queued"`

    - `const StructuredSheetResponseStatusInProgress StructuredSheetResponseStatus = "in_progress"`

    - `const StructuredSheetResponseStatusCompleted StructuredSheetResponseStatus = "completed"`

    - `const StructuredSheetResponseStatusFailed StructuredSheetResponseStatus = "failed"`

    - `const StructuredSheetResponseStatusCancelled StructuredSheetResponseStatus = "cancelled"`

  - `UpdatedAt Time`

    The timestamp when the conversion was last updated.

  - `LastError StructuredSheetResponseLastError`

    Error information when processing fails.

    - `Code string`

      A machine-readable error code.

    - `Message string`

      A human-readable description of the error.

  - `SheetNames []string`

    List of sheet names included in this conversion.

  - `TableCount int64`

    Number of tables extracted from the workbook. Only present when status is 'completed'.

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/deeptable-com/deeptable-go"
  "github.com/deeptable-com/deeptable-go/option"
)

func main() {
  client := deeptable.NewClient(
    option.WithAPIKey("My API Key"),
  )
  structuredSheetResponse, err := client.StructuredSheets.Cancel(context.TODO(), "ss_01kfxgjd94fn9stqm42nejb627")
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", structuredSheetResponse.ID)
}
```

#### Response

```json
{
  "id": "ss_01kfxgjd94fn9stqm42nejb627",
  "created_at": "2024-01-15T10:30:00Z",
  "file_id": "file_01kfxgjd94fn9stqm414vjb0s8",
  "object": "structured_sheet",
  "status": "completed",
  "updated_at": "2024-01-15T10:35:00Z",
  "last_error": {
    "code": "invalid_file_format",
    "message": "The uploaded file is not a valid Excel spreadsheet."
  },
  "sheet_names": [
    "Sheet1",
    "Financials"
  ],
  "table_count": 6
}
```

## Download structured sheet export

`client.StructuredSheets.Download(ctx, structuredSheetID, query) (*Response, error)`

**get** `/v1/structured-sheets/{structured_sheet_id}/download`

Download the structured data in the specified format. Only available when conversion status is 'completed'.

Available formats:

- `sqlite`: SQLite database containing all extracted tables
- `cell_labels`: CSV file with cell-level semantic labels

### Parameters

- `structuredSheetID string`

  The unique identifier of the structured sheet conversion.

- `query StructuredSheetDownloadParams`

  - `Format param.Field[StructuredSheetDownloadParamsFormat]`

    The export format to download.

    - `const StructuredSheetDownloadParamsFormatSqlite StructuredSheetDownloadParamsFormat = "sqlite"`

    - `const StructuredSheetDownloadParamsFormatCellLabels StructuredSheetDownloadParamsFormat = "cell_labels"`

### Returns

- `type StructuredSheetDownloadResponse interface{…}`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/deeptable-com/deeptable-go"
  "github.com/deeptable-com/deeptable-go/option"
)

func main() {
  client := deeptable.NewClient(
    option.WithAPIKey("My API Key"),
  )
  response, err := client.StructuredSheets.Download(
    context.TODO(),
    "ss_01kfxgjd94fn9stqm42nejb627",
    deeptable.StructuredSheetDownloadParams{

    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", response)
}
```

## Domain Types

### Structured Sheet Response

- `type StructuredSheetResponse struct{…}`

  Response representing a structured sheet conversion job.

  This is returned from POST (create), GET (retrieve), and list endpoints.

  - `ID string`

    The unique identifier for this structured sheet conversion.

  - `CreatedAt Time`

    The timestamp when the conversion was started.

  - `FileID string`

    The unique identifier for the source file.

  - `Object StructuredSheet`

    The object type, which is always 'structured_sheet'.

    - `const StructuredSheetStructuredSheet StructuredSheet = "structured_sheet"`

  - `Status StructuredSheetResponseStatus`

    The current processing status.

    - `const StructuredSheetResponseStatusQueued StructuredSheetResponseStatus = "queued"`

    - `const StructuredSheetResponseStatusInProgress StructuredSheetResponseStatus = "in_progress"`

    - `const StructuredSheetResponseStatusCompleted StructuredSheetResponseStatus = "completed"`

    - `const StructuredSheetResponseStatusFailed StructuredSheetResponseStatus = "failed"`

    - `const StructuredSheetResponseStatusCancelled StructuredSheetResponseStatus = "cancelled"`

  - `UpdatedAt Time`

    The timestamp when the conversion was last updated.

  - `LastError StructuredSheetResponseLastError`

    Error information when processing fails.

    - `Code string`

      A machine-readable error code.

    - `Message string`

      A human-readable description of the error.

  - `SheetNames []string`

    List of sheet names included in this conversion.

  - `TableCount int64`

    Number of tables extracted from the workbook. Only present when status is 'completed'.

# Tables

## List tables in structured sheet

`client.StructuredSheets.Tables.List(ctx, structuredSheetID, query) (*CursorIDPage[TableResponse], error)`

**get** `/v1/structured-sheets/{structured_sheet_id}/tables`

List all tables extracted from the structured sheet. Only available when conversion status is 'completed'.

### Parameters

- `structuredSheetID string`

  The unique identifier of the structured sheet conversion.

- `query StructuredSheetTableListParams`

  - `After param.Field[string]`

    A cursor for pagination. Use the `last_id` from a previous response to fetch the next page of results.

  - `Limit param.Field[int64]`

    Maximum number of tables to return per page.

### Returns

- `type TableResponse struct{…}`

  Response representing a table extracted from a structured sheet.

  This is returned from GET (retrieve) and list table endpoints.
  Table names use a composite format: {normalized_sheet_name}__{table_name}.

  - `ID string`

    The unique identifier for this table.

  - `CreatedAt Time`

    The timestamp when this table was created.

  - `Name string`

    Composite table name: {normalized_sheet_name}__{table_name}. Uses lowercase snake_case. Aggregation tables end with '__aggregations'. Two special metadata tables exist per structured sheet: '__deeptable_workbook_metadata' (workbook provenance info) and '__deeptable_table_overview' (summary of all tables). Example: 'staffing__head_count' or 'staffing__head_count__aggregations'.

  - `Object Table`

    The object type, which is always 'table'.

    - `const TableTable Table = "table"`

  - `SheetName string`

    The original Excel sheet name this table came from.

  - `StructuredSheetID string`

    The ID of the structured sheet this table belongs to.

  - `Type TableResponseType`

    The type of table (relational, aggregation, tableless, or metadata).

    - `const TableResponseTypeRelational TableResponseType = "relational"`

    - `const TableResponseTypeAggregation TableResponseType = "aggregation"`

    - `const TableResponseTypeTableless TableResponseType = "tableless"`

    - `const TableResponseTypeMetadata TableResponseType = "metadata"`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/deeptable-com/deeptable-go"
  "github.com/deeptable-com/deeptable-go/option"
)

func main() {
  client := deeptable.NewClient(
    option.WithAPIKey("My API Key"),
  )
  page, err := client.StructuredSheets.Tables.List(
    context.TODO(),
    "ss_01kfxgjd94fn9stqm42nejb627",
    deeptable.StructuredSheetTableListParams{

    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", page)
}
```

#### Response

```json
{
  "data": [
    {
      "id": "tbl_01kfxgjd94fn9stqm45rqr2pnz",
      "created_at": "2026-01-15T10:35:00Z",
      "name": "staffing__head_count",
      "object": "table",
      "sheet_name": "Staffing",
      "structured_sheet_id": "ss_01kfxgjd94fn9stqm42nejb627",
      "type": "relational"
    },
    {
      "id": "tbl_02abc2def3ghjkmnpqrs4uvwxz",
      "created_at": "2026-01-15T10:35:00Z",
      "name": "staffing__head_count__aggregations",
      "object": "table",
      "sheet_name": "Staffing",
      "structured_sheet_id": "ss_01kfxgjd94fn9stqm42nejb627",
      "type": "aggregation"
    }
  ],
  "has_more": false,
  "object": "list",
  "first_id": "tbl_01kfxgjd94fn9stqm45rqr2pnz",
  "last_id": "tbl_02abc2def3ghjkmnpqrs4uvwxz"
}
```

## Retrieve a table

`client.StructuredSheets.Tables.Get(ctx, tableID, query) (*TableResponse, error)`

**get** `/v1/structured-sheets/{structured_sheet_id}/tables/{table_id}`

Get details of a specific table extracted from the structured sheet. Only available when conversion status is 'completed'.

### Parameters

- `tableID string`

  The unique identifier of the table.

- `query StructuredSheetTableGetParams`

  - `StructuredSheetID param.Field[string]`

    The unique identifier of the structured sheet conversion.

### Returns

- `type TableResponse struct{…}`

  Response representing a table extracted from a structured sheet.

  This is returned from GET (retrieve) and list table endpoints.
  Table names use a composite format: {normalized_sheet_name}__{table_name}.

  - `ID string`

    The unique identifier for this table.

  - `CreatedAt Time`

    The timestamp when this table was created.

  - `Name string`

    Composite table name: {normalized_sheet_name}__{table_name}. Uses lowercase snake_case. Aggregation tables end with '__aggregations'. Two special metadata tables exist per structured sheet: '__deeptable_workbook_metadata' (workbook provenance info) and '__deeptable_table_overview' (summary of all tables). Example: 'staffing__head_count' or 'staffing__head_count__aggregations'.

  - `Object Table`

    The object type, which is always 'table'.

    - `const TableTable Table = "table"`

  - `SheetName string`

    The original Excel sheet name this table came from.

  - `StructuredSheetID string`

    The ID of the structured sheet this table belongs to.

  - `Type TableResponseType`

    The type of table (relational, aggregation, tableless, or metadata).

    - `const TableResponseTypeRelational TableResponseType = "relational"`

    - `const TableResponseTypeAggregation TableResponseType = "aggregation"`

    - `const TableResponseTypeTableless TableResponseType = "tableless"`

    - `const TableResponseTypeMetadata TableResponseType = "metadata"`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/deeptable-com/deeptable-go"
  "github.com/deeptable-com/deeptable-go/option"
)

func main() {
  client := deeptable.NewClient(
    option.WithAPIKey("My API Key"),
  )
  tableResponse, err := client.StructuredSheets.Tables.Get(
    context.TODO(),
    "tbl_01kfxgjd94fn9stqm45rqr2pnz",
    deeptable.StructuredSheetTableGetParams{
      StructuredSheetID: "ss_01kfxgjd94fn9stqm42nejb627",
    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", tableResponse.ID)
}
```

#### Response

```json
{
  "id": "tbl_01kfxgjd94fn9stqm45rqr2pnz",
  "created_at": "2026-01-15T10:35:00Z",
  "name": "staffing__head_count",
  "object": "table",
  "sheet_name": "Staffing",
  "structured_sheet_id": "ss_01kfxgjd94fn9stqm42nejb627",
  "type": "relational"
}
```

## Download table data

`client.StructuredSheets.Tables.Download(ctx, tableID, params) (*Response, error)`

**get** `/v1/structured-sheets/{structured_sheet_id}/tables/{table_id}/download`

Download the table data in the specified format.

Available formats:

- `parquet`: Apache Parquet columnar format (recommended for data analysis)
- `csv`: Comma-separated values (compatible with any spreadsheet application)

### Parameters

- `tableID string`

  The unique identifier of the table.

- `params StructuredSheetTableDownloadParams`

  - `StructuredSheetID param.Field[string]`

    Path param: The unique identifier of the structured sheet conversion.

  - `Format param.Field[StructuredSheetTableDownloadParamsFormat]`

    Query param: The format to download the table data in.

    - `const StructuredSheetTableDownloadParamsFormatParquet StructuredSheetTableDownloadParamsFormat = "parquet"`

    - `const StructuredSheetTableDownloadParamsFormatCsv StructuredSheetTableDownloadParamsFormat = "csv"`

### Returns

- `type StructuredSheetTableDownloadResponse interface{…}`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/deeptable-com/deeptable-go"
  "github.com/deeptable-com/deeptable-go/option"
)

func main() {
  client := deeptable.NewClient(
    option.WithAPIKey("My API Key"),
  )
  response, err := client.StructuredSheets.Tables.Download(
    context.TODO(),
    "tbl_01kfxgjd94fn9stqm45rqr2pnz",
    deeptable.StructuredSheetTableDownloadParams{
      StructuredSheetID: "ss_01kfxgjd94fn9stqm42nejb627",
      Format: deeptable.StructuredSheetTableDownloadParamsFormatParquet,
    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", response)
}
```

## Domain Types

### Table Response

- `type TableResponse struct{…}`

  Response representing a table extracted from a structured sheet.

  This is returned from GET (retrieve) and list table endpoints.
  Table names use a composite format: {normalized_sheet_name}__{table_name}.

  - `ID string`

    The unique identifier for this table.

  - `CreatedAt Time`

    The timestamp when this table was created.

  - `Name string`

    Composite table name: {normalized_sheet_name}__{table_name}. Uses lowercase snake_case. Aggregation tables end with '__aggregations'. Two special metadata tables exist per structured sheet: '__deeptable_workbook_metadata' (workbook provenance info) and '__deeptable_table_overview' (summary of all tables). Example: 'staffing__head_count' or 'staffing__head_count__aggregations'.

  - `Object Table`

    The object type, which is always 'table'.

    - `const TableTable Table = "table"`

  - `SheetName string`

    The original Excel sheet name this table came from.

  - `StructuredSheetID string`

    The ID of the structured sheet this table belongs to.

  - `Type TableResponseType`

    The type of table (relational, aggregation, tableless, or metadata).

    - `const TableResponseTypeRelational TableResponseType = "relational"`

    - `const TableResponseTypeAggregation TableResponseType = "aggregation"`

    - `const TableResponseTypeTableless TableResponseType = "tableless"`

    - `const TableResponseTypeMetadata TableResponseType = "metadata"`