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@ -7,6 +7,7 @@ toc_priority: 11
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# How to Import JSON Into ClickHouse? {#how-to-import-json-into-clickhouse}
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ClickHouse supports a wide range of [data formats for input and output](../../interfaces/formats.md). There are multiple JSON variations among them, but the most commonly used for data ingestion is [JSONEachRow](../../interfaces/formats.md#jsoneachrow). It expects one JSON object per row, each object separated by a newline.
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In JSON format, the presence of quotation marks can determine whether the data is a number or a string. In the case of a number, you must always interpret it as an enum id.
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## Examples {#examples}
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@ -1167,7 +1167,40 @@ For CSV input format enables or disables parsing of unquoted `NULL` as literal (
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## input_format_csv_enum_as_number {#settings-input_format_csv_enum_as_number}
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For CSV input format switches to parsing enum values as enum ids.
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Enables or disables to parsing enum values as enum ids for CSV input format.
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Possible values:
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- 0 — Disabled.
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- 1 — Enabled.
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Default value: 0.
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**Example**
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Query:
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```sql
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DROP TABLE IF EXISTS table_with_enum_column_for_csv_insert;
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CREATE TABLE table_with_enum_column_for_csv_insert (Id Int32,Value Enum('ef' = 1, 'es' = 2)) ENGINE=Memory();
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SET input_format_csv_enum_as_number = 1;
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INSERT INTO table_with_enum_column_for_csv_insert FORMAT CSV 102,2;
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SELECT * FROM table_with_enum_column_for_csv_insert;
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SET input_format_csv_enum_as_number = 0;
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DROP TABLE IF EXISTS table_with_enum_column_for_csv_insert;
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```
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Result:
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```text
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┌──Id─┬─Value─┐
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│ 102 │ es │
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└─────┴───────┘
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```
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## output_format_csv_crlf_end_of_line {#settings-output-format-csv-crlf-end-of-line}
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@ -1127,6 +1127,43 @@ SELECT area/period FROM account_orders FORMAT JSON;
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Для формата CSV включает или выключает парсинг неэкранированной строки `NULL` как литерала (синоним для `\N`)
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## input_format_csv_enum_as_number {#settings-input_format_csv_enum_as_number}
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Включает или отключает парсинг значений перечислений как идентификаторов перечислений для входного формата CSV.
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Возможные значения:
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- 0 — выключена.
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- 1 — включена.
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Значение по умолчанию: 0.
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**Пример**
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Запрос:
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```sql
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DROP TABLE IF EXISTS table_with_enum_column_for_csv_insert;
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CREATE TABLE table_with_enum_column_for_csv_insert (Id Int32,Value Enum('ef' = 1, 'es' = 2)) ENGINE=Memory();
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SET input_format_csv_enum_as_number = 1;
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INSERT INTO table_with_enum_column_for_csv_insert FORMAT CSV 102,2;
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SELECT * FROM table_with_enum_column_for_csv_insert;
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SET input_format_csv_enum_as_number = 0;
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DROP TABLE IF EXISTS table_with_enum_column_for_csv_insert;
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```
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Результат:
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```text
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┌──Id─┬─Value─┐
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│ 102 │ es │
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└─────┴───────┘
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```
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## output_format_csv_crlf_end_of_line {#settings-output-format-csv-crlf-end-of-line}
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Использовать в качестве разделителя строк для CSV формата CRLF (DOS/Windows стиль) вместо LF (Unix стиль).
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