ClickHouse/doc/reference/en/formats/tskv.rst
2017-06-09 19:03:16 +03:00

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TSKV
----
Similar to TabSeparated, but displays data in name=value format. Names are displayed just as in TabSeparated. Additionally, a ``=`` symbol is displayed.
.. code-block:: text
SearchPhrase= count()=8267016
SearchPhrase=bathroom interior count()=2166
SearchPhrase=yandex count()=1655
SearchPhrase=spring 2014 fashion count()=1549
SearchPhrase=free-form photo count()=1480
SearchPhrase=Angelina Jolie count()=1245
SearchPhrase=omsk count()=1112
SearchPhrase=photos of dog breeds count()=1091
SearchPhrase=curtain design count()=1064
SearchPhrase=baku count()=1000
In case of many small columns this format is obviously not effective and there usually is no reason to use it. This format is supported because it is used for some cases in Yandex.
Format is supported both for input and output. In INSERT queries data can be supplied with arbitrary order of columns. It is also possible to omit values in which case the default value of the column is inserted. N.B. when using TSKV format, complex default values are not supported, so when omitting a column its value will be zeros or empty string depending on its type.