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* prefer relative links from root * wip * split aggregate function reference * split system tables
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541 B
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groupArray
Syntax: groupArray(x) or groupArray(max_size)(x)
Creates an array of argument values. Values can be added to the array in any (indeterminate) order.
The second version (with the max_size parameter) limits the size of the resulting array to max_size elements. For example, groupArray(1)(x) is equivalent to [any (x)].
In some cases, you can still rely on the order of execution. This applies to cases when SELECT comes from a subquery that uses ORDER BY.