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Merge pull request #39540 from den-crane/patch-27

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Doc. Some notes about formats WithNames
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docs/en/interfaces/formats.md
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@ -194,18 +194,25 @@ Differs from the `TabSeparated` format in that the column names are written in t
During parsing, the first row is expected to contain the column names. You can use column names to determine their position and to check their correctness.
:::warning
If setting [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header) is set to 1,
the columns from input data will be mapped to the columns from the table by their names, columns with unknown names will be skipped if setting [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields) is set to 1.
Otherwise, the first row will be skipped.
:::
This format is also available under the name `TSVWithNames`.
## TabSeparatedWithNamesAndTypes {#tabseparatedwithnamesandtypes}
Differs from the `TabSeparated` format in that the column names are written to the first row, while the column types are in the second row.
The first row with names is processed the same way as in `TabSeparatedWithNames` format.
:::warning
If setting [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header) is set to 1,
the columns from input data will be mapped to the columns from the table by their names, columns with unknown names will be skipped if setting [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields) is set to 1.
Otherwise, the first row will be skipped.
If setting [input_format_with_types_use_header](../operations/settings/settings.md#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.
:::
This format is also available under the name `TSVWithNamesAndTypes`.
@ -451,10 +458,24 @@ The CSV format supports the output of totals and extremes the same way as `TabSe
Also prints the header row with column names, similar to [TabSeparatedWithNames](#tabseparatedwithnames).
:::warning
If setting [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header) is set to 1,
the columns from input data will be mapped to the columns from the table by their names, columns with unknown names will be skipped if setting [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields) is set to 1.
Otherwise, the first row will be skipped.
:::
## CSVWithNamesAndTypes {#csvwithnamesandtypes}
Also prints two header rows with column names and types, similar to [TabSeparatedWithNamesAndTypes](#tabseparatedwithnamesandtypes).
:::warning
If setting [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header) is set to 1,
the columns from input data will be mapped to the columns from the table by their names, columns with unknown names will be skipped if setting [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields) is set to 1.
Otherwise, the first row will be skipped.
If setting [input_format_with_types_use_header](../operations/settings/settings.md#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.
:::
## CustomSeparated {#format-customseparated}
Similar to [Template](#format-template), but it prints or reads all names and types of columns and uses escaping rule from [format_custom_escaping_rule](../operations/settings/settings.md#format_custom_escaping_rule) setting and delimiters from [format_custom_field_delimiter](../operations/settings/settings.md#format_custom_field_delimiter), [format_custom_row_before_delimiter](../operations/settings/settings.md#format_custom_row_before_delimiter), [format_custom_row_after_delimiter](../operations/settings/settings.md#format_custom_row_after_delimiter), [format_custom_row_between_delimiter](../operations/settings/settings.md#format_custom_row_between_delimiter), [format_custom_result_before_delimiter](../operations/settings/settings.md#format_custom_result_before_delimiter) and [format_custom_result_after_delimiter](../operations/settings/settings.md#format_custom_result_after_delimiter) settings, not from format strings.
@ -465,10 +486,24 @@ There is also `CustomSeparatedIgnoreSpaces` format, which is similar to [Templat
Also prints the header row with column names, similar to [TabSeparatedWithNames](#tabseparatedwithnames).
:::warning
If setting [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header) is set to 1,
the columns from input data will be mapped to the columns from the table by their names, columns with unknown names will be skipped if setting [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields) is set to 1.
Otherwise, the first row will be skipped.
:::
## CustomSeparatedWithNamesAndTypes {#customseparatedwithnamesandtypes}
Also prints two header rows with column names and types, similar to [TabSeparatedWithNamesAndTypes](#tabseparatedwithnamesandtypes).
:::warning
If setting [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header) is set to 1,
the columns from input data will be mapped to the columns from the table by their names, columns with unknown names will be skipped if setting [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields) is set to 1.
Otherwise, the first row will be skipped.
If setting [input_format_with_types_use_header](../operations/settings/settings.md#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.
:::
## SQLInsert {#sqlinsert}
Outputs data as a sequence of `INSERT INTO table (columns...) VALUES (...), (...) ...;` statements.
@ -911,18 +946,46 @@ Differs from `JSONEachRow`/`JSONStringsEachRow` in that ClickHouse will also yie
Differs from `JSONCompactEachRow` format in that it also prints the header row with column names, similar to [TabSeparatedWithNames](#tabseparatedwithnames).
:::warning
If setting [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header) is set to 1,
the columns from input data will be mapped to the columns from the table by their names, columns with unknown names will be skipped if setting [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields) is set to 1.
Otherwise, the first row will be skipped.
:::
## JSONCompactEachRowWithNamesAndTypes {#jsoncompacteachrowwithnamesandtypes}
Differs from `JSONCompactEachRow` format in that it also prints two header rows with column names and types, similar to [TabSeparatedWithNamesAndTypes](#tabseparatedwithnamesandtypes).
:::warning
If setting [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header) is set to 1,
the columns from input data will be mapped to the columns from the table by their names, columns with unknown names will be skipped if setting [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields) is set to 1.
Otherwise, the first row will be skipped.
If setting [input_format_with_types_use_header](../operations/settings/settings.md#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.
:::
## JSONCompactStringsEachRowWithNames {#jsoncompactstringseachrowwithnames}
Differs from `JSONCompactStringsEachRow` in that in that it also prints the header row with column names, similar to [TabSeparatedWithNames](#tabseparatedwithnames).
:::warning
If setting [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header) is set to 1,
the columns from input data will be mapped to the columns from the table by their names, columns with unknown names will be skipped if setting [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields) is set to 1.
Otherwise, the first row will be skipped.
:::
## JSONCompactStringsEachRowWithNamesAndTypes {#jsoncompactstringseachrowwithnamesandtypes}
Differs from `JSONCompactStringsEachRow` in that it also prints two header rows with column names and types, similar to [TabSeparatedWithNamesAndTypes](#tabseparatedwithnamesandtypes).
:::warning
If setting [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header) is set to 1,
the columns from input data will be mapped to the columns from the table by their names, columns with unknown names will be skipped if setting [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields) is set to 1.
Otherwise, the first row will be skipped.
If setting [input_format_with_types_use_header](../operations/settings/settings.md#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.
:::
```json
["num", "str", "arr"]
["Int32", "String", "Array(UInt8)"]
@ -1199,6 +1262,12 @@ Similar to [RowBinary](#rowbinary), but with added header:
- [LEB128](https://en.wikipedia.org/wiki/LEB128)-encoded number of columns (N)
- N `String`s specifying column names
:::warning
If setting [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header) is set to 1,
the columns from input data will be mapped to the columns from the table by their names, columns with unknown names will be skipped if setting [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields) is set to 1.
Otherwise, the first row will be skipped.
:::
## RowBinaryWithNamesAndTypes {#rowbinarywithnamesandtypes}
Similar to [RowBinary](#rowbinary), but with added header:
@ -1207,6 +1276,14 @@ Similar to [RowBinary](#rowbinary), but with added header:
- N `String`s specifying column names
- N `String`s specifying column types
:::warning
If setting [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header) is set to 1,
the columns from input data will be mapped to the columns from the table by their names, columns with unknown names will be skipped if setting [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields) is set to 1.
Otherwise, the first row will be skipped.
If setting [input_format_with_types_use_header](../operations/settings/settings.md#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.
:::
## Values {#data-format-values}
Prints every row in brackets. Rows are separated by commas. There is no comma after the last row. The values inside the brackets are also comma-separated. Numbers are output in a decimal format without quotes. Arrays are output in square brackets. Strings, dates, and dates with times are output in quotes. Escaping rules and parsing are similar to the [TabSeparated](#tabseparated) format. During formatting, extra spaces aren’t inserted, but during parsing, they are allowed and skipped (except for spaces inside array values, which are not allowed). [NULL](../sql-reference/syntax.md) is represented as `NULL`.

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@ -19,6 +19,7 @@ ClickHouse может принимать (`INSERT`) и отдавать (`SELECT
| [TemplateIgnoreSpaces](#templateignorespaces) | ✔ | ✗ |
| [CSV](#csv) | ✔ | ✔ |
| [CSVWithNames](#csvwithnames) | ✔ | ✔ |
| [CSVWithNamesAndTypes](#csvwithnamesandtypes) | ✔ | ✔ |
| [CustomSeparated](#format-customseparated) | ✔ | ✔ |
| [CustomSeparatedWithNames](#customseparatedwithnames) | ✔ | ✔ |
| [CustomSeparatedWithNamesAndTypes](#customseparatedwithnamesandtypes) | ✔ | ✔ |
@ -52,6 +53,7 @@ ClickHouse может принимать (`INSERT`) и отдавать (`SELECT
| [ArrowStream](#data-format-arrow-stream) | ✔ | ✔ |
| [ORC](#data-format-orc) | ✔ | ✔ |
| [RowBinary](#rowbinary) | ✔ | ✔ |
| [RowBinaryWithNames](#rowbinarywithnames) | ✔ | ✔ |
| [RowBinaryWithNamesAndTypes](#rowbinarywithnamesandtypes) | ✔ | ✔ |
| [Native](#native) | ✔ | ✔ |
| [Null](#null) | ✗ | ✔ |
@ -171,6 +173,12 @@ SELECT * FROM nestedt FORMAT TSV
При парсинге первая строка должна содержать имена столбцов. Вы можете использовать имена столбцов, чтобы указать их порядок расположения, или чтобы проверить их корректность.
:::warning
Если включен параметр [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header),
столбцы из входных данных будут сопоставлены со столбцами таблицы по их именам, столбцы с неизвестными именами будут пропущены, если включен параметр [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields).
В противном случае первая строка будет пропущена.
:::
Этот формат также доступен под именем `TSVWithNames`.
## TabSeparatedWithNamesAndTypes {#tabseparatedwithnamesandtypes}
@ -178,6 +186,14 @@ SELECT * FROM nestedt FORMAT TSV
Отличается от формата `TabSeparated` тем, что в первой строке пишутся имена столбцов, а во второй - типы столбцов.
При парсинге, первая и вторая строка полностью игнорируется.
:::warning
Если включен параметр [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header),
столбцы из входных данных будут сопоставлены со столбцами таблицы по их именам, столбцы с неизвестными именами будут пропущены, если включен параметр [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields).
В противном случае первая строка будет пропущена.
Если включен параметр [input_format_with_types_use_header](../operations/settings/settings.md#input_format_with_types_use_header),
типы из входных данных будут сравниваться с типами соответствующих столбцов из таблицы. В противном случае вторая строка будет пропущена.
:::
Этот формат также доступен под именем `TSVWithNamesAndTypes`.
## Template {#format-template}
@ -374,6 +390,24 @@ $ clickhouse-client --format_csv_delimiter="|" --query="INSERT INTO test.csv FOR
Выводит также заголовок, аналогично [TabSeparatedWithNames](#tabseparatedwithnames).
:::warning
Если включен параметр [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header),
столбцы из входных данных будут сопоставлены со столбцами таблицы по их именам, столбцы с неизвестными именами будут пропущены, если включен параметр [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields).
В противном случае первая строка будет пропущена.
:::
## CSVWithNamesAndTypes {#csvwithnamesandtypes}
В первой строке пишутся имена столбцов, а во второй - типы столбцов, аналогично [TabSeparatedWithNamesAndTypes](#tabseparatedwithnamesandtypes)
:::warning
Если включен параметр [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header),
столбцы из входных данных будут сопоставлены со столбцами таблицы по их именам, столбцы с неизвестными именами будут пропущены, если включен параметр [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields).
В противном случае первая строка будет пропущена.
Если включен параметр [input_format_with_types_use_header](../operations/settings/settings.md#input_format_with_types_use_header),
типы из входных данных будут сравниваться с типами соответствующих столбцов из таблицы. В противном случае вторая строка будет пропущена.
:::
## CustomSeparated {#format-customseparated}
Аналогичен [Template](#format-template), но выводит (или считывает) все имена и типы столбцов, используя для них правило экранирования из настройки [format_custom_escaping_rule](../operations/settings/settings.md#format-custom-escaping-rule) и разделители из настроек [format_custom_field_delimiter](../operations/settings/settings.md#format-custom-field-delimiter), [format_custom_row_before_delimiter](../operations/settings/settings.md#format-custom-row-before-delimiter), [format_custom_row_after_delimiter](../operations/settings/settings.md#format-custom-row-after-delimiter), [format_custom_row_between_delimiter](../operations/settings/settings.md#format-custom-row-between-delimiter), [format_custom_result_before_delimiter](../operations/settings/settings.md#format-custom-result-before-delimiter) и [format_custom_result_after_delimiter](../operations/settings/settings.md#format-custom-result-after-delimiter), а не из форматных строк.
@ -384,10 +418,24 @@ $ clickhouse-client --format_csv_delimiter="|" --query="INSERT INTO test.csv FOR
Выводит также заголовок с именами столбцов, аналогичен формату [TabSeparatedWithNames](#tabseparatedwithnames).
:::warning
Если включен параметр [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header),
столбцы из входных данных будут сопоставлены со столбцами таблицы по их именам, столбцы с неизвестными именами будут пропущены, если включен параметр [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields).
В противном случае первая строка будет пропущена.
:::
## CustomSeparatedWithNamesAndTypes {#customseparatedwithnamesandtypes}
Выводит также два заголовка с именами и типами столбцов, аналогичен формату [TabSeparatedWithNamesAndTypes](#tabseparatedwithnamesandtypes).
:::warning
Если включен параметр [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header),
столбцы из входных данных будут сопоставлены со столбцами таблицы по их именам, столбцы с неизвестными именами будут пропущены, если включен параметр [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields).
В противном случае первая строка будет пропущена.
Если включен параметр [input_format_with_types_use_header](../operations/settings/settings.md#input_format_with_types_use_header),
типы из входных данных будут сравниваться с типами соответствующих столбцов из таблицы. В противном случае вторая строка будет пропущена.
:::
## JSON {#json}
Выводит данные в формате JSON. Кроме таблицы с данными, также выводятся имена и типы столбцов, и некоторая дополнительная информация - общее количество выведенных строк, а также количество строк, которое могло бы быть выведено, если бы не было LIMIT-а. Пример:
@ -660,6 +708,14 @@ SELECT * FROM json_square_brackets;
Отличается от `JSONCompactEachRow`/`JSONCompactStringsEachRow` тем, что имена и типы столбцов записываются как первые две строки.
:::warning
Если включен параметр [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header),
столбцы из входных данных будут сопоставлены со столбцами таблицы по их именам, столбцы с неизвестными именами будут пропущены, если включен параметр [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields).
В противном случае первая строка будет пропущена.
Если включен параметр [input_format_with_types_use_header](../operations/settings/settings.md#input_format_with_types_use_header),
типы из входных данных будут сравниваться с типами соответствующих столбцов из таблицы. В противном случае вторая строка будет пропущена.
:::
```json
["'hello'", "multiply(42, number)", "range(5)"]
["String", "UInt64", "Array(UInt8)"]
@ -904,6 +960,20 @@ Array представлены как длина в формате varint (unsig
Для поддержки [NULL](../sql-reference/syntax.md#null-literal) перед каждым значением типа [Nullable](../sql-reference/data-types/nullable.md) следует байт содержащий 1 или 0. Если байт 1, то значение равно NULL, и этот байт интерпретируется как отдельное значение (т.е. после него следует значение следующего поля). Если байт 0, то после байта следует значение поля (не равно NULL).
## RowBinaryWithNames {#rowbinarywithnames}
То же самое что [RowBinary](#rowbinary), но добавляется заголовок:
- Количество колонок - N, закодированное [LEB128](https://en.wikipedia.org/wiki/LEB128),
- N строк (`String`) с именами колонок,
:::warning
Если включен параметр [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header),
столбцы из входных данных будут сопоставлены со столбцами таблицы по их именам, столбцы с неизвестными именами будут пропущены, если включен параметр [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields).
В противном случае первая строка будет пропущена.
:::
## RowBinaryWithNamesAndTypes {#rowbinarywithnamesandtypes}
То же самое что [RowBinary](#rowbinary), но добавляется заголовок:
@ -912,6 +982,14 @@ Array представлены как длина в формате varint (unsig
- N строк (`String`) с именами колонок,
- N строк (`String`) с типами колонок.
:::warning
Если включен параметр [input_format_with_names_use_header](../operations/settings/settings.md#input_format_with_names_use_header),
столбцы из входных данных будут сопоставлены со столбцами таблицы по их именам, столбцы с неизвестными именами будут пропущены, если включен параметр [input_format_skip_unknown_fields](../operations/settings/settings.md#input_format_skip_unknown_fields).
В противном случае первая строка будет пропущена.
Если включен параметр [input_format_with_types_use_header](../operations/settings/settings.md#input_format_with_types_use_header),
типы из входных данных будут сравниваться с типами соответствующих столбцов из таблицы. В противном случае вторая строка будет пропущена.
:::
## Values {#data-format-values}
Выводит каждую строку в скобках. Строки разделены запятыми. После последней строки запятой нет. Значения внутри скобок также разделены запятыми. Числа выводятся в десятичном виде без кавычек. Массивы выводятся в квадратных скобках. Строки, даты, даты-с-временем выводятся в кавычках. Правила экранирования и особенности парсинга аналогичны формату [TabSeparated](#tabseparated). При форматировании, лишние пробелы не ставятся, а при парсинге - допустимы и пропускаются (за исключением пробелов внутри значений типа массив, которые недопустимы). [NULL](../sql-reference/syntax.md) представляется как `NULL`.

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@ -527,7 +527,7 @@ SELECT * FROM table_with_enum_column_for_tsv_insert;
- [Использование вложенных структур](../../interfaces/formats.md#jsoneachrow-nested) with the `JSONEachRow` format.
## input_format_with_names_use_header {#settings-input-format-with-names-use-header}
## input_format_with_names_use_header {#input_format_with_names_use_header}
Включает или отключает проверку порядка столбцов при вставке данных.
@ -535,8 +535,38 @@ SELECT * FROM table_with_enum_column_for_tsv_insert;
Поддерживаемые форматы:
- [CSVWithNames](../../interfaces/formats.md#csvwithnames)
- [TabSeparatedWithNames](../../interfaces/formats.md#tabseparatedwithnames)
- [CSVWithNames](../../interfaces/formats.md#csvwithnames)
- [CSVWithNamesAndTypes](../../interfaces/formats.md#csvwithnamesandtypes)
- [TabSeparatedWithNames](../../interfaces/formats.md#tabseparatedwithnames)
- [TabSeparatedWithNamesAndTypes](../../interfaces/formats.md#tabseparatedwithnamesandtypes)
- [JSONCompactEachRowWithNames](../../interfaces/formats.md#jsoncompacteachrowwithnames)
- [JSONCompactEachRowWithNamesAndTypes](../../interfaces/formats.md#jsoncompacteachrowwithnamesandtypes)
- [JSONCompactStringsEachRowWithNames](../../interfaces/formats.md#jsoncompactstringseachrowwithnames)
- [JSONCompactStringsEachRowWithNamesAndTypes](../../interfaces/formats.md#jsoncompactstringseachrowwithnamesandtypes)
- [RowBinaryWithNames](../../interfaces/formats.md#rowbinarywithnames)
- [RowBinaryWithNamesAndTypes](../../interfaces/formats.md#rowbinarywithnamesandtypes)
- [CustomSeparatedWithNames](../../interfaces/formats.md#customseparatedwithnames)
- [CustomSeparatedWithNamesAndTypes](../../interfaces/formats.md#customseparatedwithnamesandtypes)
Возможные значения:
- 0 — выключена.
- 1 — включена.
Значение по умолчанию: 1.
## input_format_with_types_use_header {#input_format_with_types_use_header}
Определяет, должен ли синтаксический анализатор формата проверять, соответствуют ли типы данных из входных данных типам данных из целевой таблицы.
Поддерживаемые форматы:
- [CSVWithNamesAndTypes](../../interfaces/formats.md#csvwithnamesandtypes)
- [TabSeparatedWithNamesAndTypes](../../interfaces/formats.md#tabseparatedwithnamesandtypes)
- [JSONCompactEachRowWithNamesAndTypes](../../interfaces/formats.md#jsoncompacteachrowwithnamesandtypes)
- [JSONCompactStringsEachRowWithNamesAndTypes](../../interfaces/formats.md#jsoncompactstringseachrowwithnamesandtypes)
- [RowBinaryWithNamesAndTypes](../../interfaces/formats.md#rowbinarywithnamesandtypes-rowbinarywithnamesandtypes)
- [CustomSeparatedWithNamesAndTypes](../../interfaces/formats.md#customseparatedwithnamesandtypes)
Возможные значения: