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> Documentation for the TabSeparatedWithNamesAndTypes format

# TabSeparatedWithNamesAndTypes

| Input | Output | Alias                                          |
| ----- | ------ | ---------------------------------------------- |
| ✔     | ✔      | `TSVWithNamesAndTypes`, `RawWithNamesAndTypes` |

<h2 id="description">
  Description
</h2>

Differs from the [`TabSeparated`](/reference/formats/TabSeparated/TabSeparated) format in that the column names are written to the first row, while the column types are in the second row.

<Note>
  * If setting [`input_format_with_names_use_header`](/reference/settings/formats#input_format_with_names_use_header) is set to `1`,
    the columns from the input data will be mapped to the columns in the table by their names, columns with unknown names will be skipped if setting [`input_format_skip_unknown_fields`](/reference/settings/formats#input_format_skip_unknown_fields) is set to 1.
    Otherwise, the first row will be skipped.
  * If setting [`input_format_with_types_use_header`](/reference/settings/formats#input_format_with_types_use_header) is set to `1`,
    the types from input data will be compared with the types of the corresponding columns from the table. Otherwise, the second row will be skipped.
</Note>

<h2 id="example-usage">
  Example usage
</h2>

<h3 id="inserting-data">
  Inserting data
</h3>

Using the following tsv file, named as `football.tsv`:

```tsv theme={null}
date    season  home_team       away_team       home_team_goals away_team_goals
Date    Int16   LowCardinality(String)  LowCardinality(String)  Int8    Int8
2022-04-30      2021    Sutton United   Bradford City   1       4
2022-04-30      2021    Swindon Town    Barrow  2       1
2022-04-30      2021    Tranmere Rovers Oldham Athletic 2       0
2022-05-02      2021    Port Vale       Newport County  1       2
2022-05-02      2021    Salford City    Mansfield Town  2       2
2022-05-07      2021    Barrow  Northampton Town        1       3
2022-05-07      2021    Bradford City   Carlisle United 2       0
2022-05-07      2021    Bristol Rovers  Scunthorpe United       7       0
2022-05-07      2021    Exeter City     Port Vale       0       1
2022-05-07      2021    Harrogate Town A.F.C.   Sutton United   0       2
2022-05-07      2021    Hartlepool United       Colchester United       0       2
2022-05-07      2021    Leyton Orient   Tranmere Rovers 0       1
2022-05-07      2021    Mansfield Town  Forest Green Rovers     2       2
2022-05-07      2021    Newport County  Rochdale        0       2
2022-05-07      2021    Oldham Athletic Crawley Town    3       3
2022-05-07      2021    Stevenage Borough       Salford City    4       2
2022-05-07      2021    Walsall Swindon Town    0       3
```

Insert the data:

```sql theme={null}
INSERT INTO football FROM INFILE 'football.tsv' FORMAT TabSeparatedWithNamesAndTypes;
```

<h3 id="reading-data">
  Reading data
</h3>

Read data using the `TabSeparatedWithNamesAndTypes` format:

```sql theme={null}
SELECT *
FROM football
FORMAT TabSeparatedWithNamesAndTypes
```

The output will be in tab separated format with two header rows for column names and types:

```tsv theme={null}
date    season  home_team       away_team       home_team_goals away_team_goals
Date    Int16   LowCardinality(String)  LowCardinality(String)  Int8    Int8
2022-04-30      2021    Sutton United   Bradford City   1       4
2022-04-30      2021    Swindon Town    Barrow  2       1
2022-04-30      2021    Tranmere Rovers Oldham Athletic 2       0
2022-05-02      2021    Port Vale       Newport County  1       2
2022-05-02      2021    Salford City    Mansfield Town  2       2
2022-05-07      2021    Barrow  Northampton Town        1       3
2022-05-07      2021    Bradford City   Carlisle United 2       0
2022-05-07      2021    Bristol Rovers  Scunthorpe United       7       0
2022-05-07      2021    Exeter City     Port Vale       0       1
2022-05-07      2021    Harrogate Town A.F.C.   Sutton United   0       2
2022-05-07      2021    Hartlepool United       Colchester United       0       2
2022-05-07      2021    Leyton Orient   Tranmere Rovers 0       1
2022-05-07      2021    Mansfield Town  Forest Green Rovers     2       2
2022-05-07      2021    Newport County  Rochdale        0       2
2022-05-07      2021    Oldham Athletic Crawley Town    3       3
2022-05-07      2021    Stevenage Borough       Salford City    4       2
2022-05-07      2021    Walsall Swindon Town    0       3
```

<h2 id="format-settings">
  Format settings
</h2>