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Merge pull request #73337 from ClickHouse/vdimir/followup-70957

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Documentation for composed_data_type_output_format_mode
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Vladimir Cherkasov 2024-12-16 17:45:10 +00:00 committed by GitHub
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29
src/Core/FormatFactorySettings.h
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@ -1252,7 +1252,34 @@ Set the quoting rule for identifiers in SHOW CREATE query
Set the quoting style for identifiers in SHOW CREATE query
)", 0) \
DECLARE(String, composed_data_type_output_format_mode, "default", R"(
Set composed data type output format mode, default or spark.
Set output format mode for composed data types like Array, Map, Tuple. Possible values: 'default', 'spark'.
In 'default' mode, the output format is the same as in the previous versions of ClickHouse,
- Arrays are displayed without spaces between elements.
- Maps use curly braces `{}` and colons `:` to separate keys and values.
- Tuples are displayed with single quotes around string elements.
Example of 'default' mode:
```
┌─[1, 2, 3]─┬─map('a', 1, 'b', 2)─┬─(123, 'abc')─┐
│ [1,2,3] │ {'a':1,'b':2} │ (123,'abc') │
└───────────┴─────────────────────┴──────────────┘
```
In 'spark' mode, the output format is similar to Apache Spark:
- Arrays are displayed with spaces between elements.
- Maps use curly braces `{}` and arrows `->` to separate keys and values.
- Tuples are displayed without single quotes around string elements.
Example of 'spark' mode:
```
┌─[1, 2, 3]─┬─map('a', 1, 'b', 2)─┬─(123, 'abc')─┐
│ [1, 2, 3] │ {a -> 1, b -> 2} │ (123, abc) │
└───────────┴─────────────────────┴──────────────┘
```
)", 0) \
// End of FORMAT_FACTORY_SETTINGS