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ClickHouse/docs/en/operations/system-tables/one.md
Ivan Blinkov 7170f3c534
[docs] split aggregate function and system table references (#11742) 
* prefer relative links from root

* wip

* split aggregate function reference

* split system tables
2020-06-18 11:24:31 +03:00

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system.one

This table contains a single row with a single dummy UInt8 column containing the value 0.

This table is used if a SELECT query doesn’t specify the FROM clause.

This is similar to the DUAL table found in other DBMSs.