ClickHouse/docs/en/data_types/tuple.md

# Tuple(T1, T2, ...)

Tuples can't be written to tables (other than Memory tables). They are used for temporary column grouping. Columns can be grouped when an IN expression is used in a query, and for specifying certain formal parameters of lambda functions. For more information, see "IN operators" and "Higher order functions".

Tuples can be output as the result of running a query. In this case, for text formats other than JSON\*, values are comma-separated in brackets. In JSON\* formats, tuples are output as arrays (in square brackets).
Sources for english documentation switched to Markdown. Edit page link is fixed too for both language versions of documentation. 2017-12-28 15:13:23 +00:00			`# Tuple(T1, T2, ...)`
Initial commit if EN docs 2017-04-03 19:49:50 +00:00
Data types 2017-04-26 18:10:25 +00:00			`Tuples can't be written to tables (other than Memory tables). They are used for temporary column grouping. Columns can be grouped when an IN expression is used in a query, and for specifying certain formal parameters of lambda functions. For more information, see "IN operators" and "Higher order functions".`
Initial commit if EN docs 2017-04-03 19:49:50 +00:00
Sources for english documentation switched to Markdown. Edit page link is fixed too for both language versions of documentation. 2017-12-28 15:13:23 +00:00			`Tuples can be output as the result of running a query. In this case, for text formats other than JSON\, values are comma-separated in brackets. In JSON\ formats, tuples are output as arrays (in square brackets).`