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Merge pull request #17859 from otrazhenia/evgsudarikova-DOCSUP-2958-new

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DOCSUP-2958: Document the output_format_tsv_null_representation setting
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docs/en/operations/settings/settings.md
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@ -2360,10 +2360,41 @@ Default value: `1`.
## output_format_tsv_null_representation {#output_format_tsv_null_representation}
Allows configurable `NULL` representation for [TSV](../../interfaces/formats.md#tabseparated) output format. The setting only controls output format and `\N` is the only supported `NULL` representation for TSV input format.
Defines the representation of `NULL` for [TSV](../../interfaces/formats.md#tabseparated) output format. User can set any string as a value, for example, `My NULL`.
Default value: `\N`.
**Examples**
Query
```sql
SELECT * FROM tsv_custom_null FORMAT TSV;
```
Result
```text
788
\N
\N
```
Query
```sql
SET output_format_tsv_null_representation = 'My NULL';
SELECT * FROM tsv_custom_null FORMAT TSV;
```
Result
```text
788
My NULL
My NULL
```
## output_format_json_array_of_rows {#output-format-json-array-of-rows}
Enables the ability to output all rows as a JSON array in the [JSONEachRow](../../interfaces/formats.md#jsoneachrow) format.

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docs/ru/operations/settings/settings.md
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@ -2231,10 +2231,41 @@ SELECT CAST(toNullable(toInt32(0)) AS Int32) as x, toTypeName(x);
## output_format_tsv_null_representation {#output_format_tsv_null_representation}
Позволяет настраивать представление `NULL` для формата выходных данных [TSV](../../interfaces/formats.md#tabseparated). Настройка управляет форматом выходных данных, `\N` является единственным поддерживаемым представлением для формата входных данных TSV.
Определяет представление `NULL` для формата выходных данных [TSV](../../interfaces/formats.md#tabseparated). Пользователь может установить в качестве значения любую строку.
Значение по умолчанию: `\N`.
**Примеры**
Запрос
```sql
SELECT * FROM tsv_custom_null FORMAT TSV;
```
Результат
```text
788
\N
\N
```
Запрос
```sql
SET output_format_tsv_null_representation = 'My NULL';
SELECT * FROM tsv_custom_null FORMAT TSV;
```
Результат
```text
788
My NULL
My NULL
```
## output_format_json_array_of_rows {#output-format-json-array-of-rows}
Позволяет выводить все строки в виде массива JSON в формате [JSONEachRow](../../interfaces/formats.md#jsoneachrow).