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7 changes: 7 additions & 0 deletions docs/src/main/sphinx/functions/array.md
Original file line number Diff line number Diff line change
Expand Up @@ -77,7 +77,14 @@ SELECT array_histogram(ARRAY[NULL, NULL]);
```
:::

:::{function} array_join(x, delimiter) -> varchar
Concatenates the elements of the given array using the delimiter.
Null elements are omitted in the result.
:::

:::{function} array_join(x, delimiter, null_replacement) -> varchar
:noindex: true

Concatenates the elements of the given array using the delimiter and an optional string to replace nulls.
:::

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