diff --git a/docs/en/sql-reference/functions/array-functions.md b/docs/en/sql-reference/functions/array-functions.md index 89de48a81ad..e7918c018db 100644 --- a/docs/en/sql-reference/functions/array-functions.md +++ b/docs/en/sql-reference/functions/array-functions.md @@ -58,7 +58,7 @@ Checks whether the input array is non-empty. notEmpty([x]) ``` -An array is considered non-empty if it contains at least one non-empty element. +An array is considered non-empty if it contains at least one element. !!! note "Note" Can be optimized by enabling the [optimize_functions_to_subcolumns](../../operations/settings/settings.md#optimize-functions-to-subcolumns) setting. With `optimize_functions_to_subcolumns = 1` the function reads only [size0](../../sql-reference/data-types/array.md#array-size) subcolumn instead of reading and processing the whole array column. The query `SELECT notEmpty(arr) FROM table` transforms to `SELECT arr.size0 != 0 FROM TABLE`.