Categories:: Semi-structured Data Functions (Array/Object)

ARRAY_PREPEND¶

Returns an array containing the new element as well as all elements from the source array. The new element is positioned at the beginning of the array.

See also:: ARRAY_APPEND , ARRAY_INSERT

Syntax¶

ARRAY_PREPEND( <array> , <new_element> )

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Arguments¶

array: The source array.
new_element: The element to be prepended.

Returns¶

This returns the updated array.

Examples¶

The example below shows that the prepended element is placed at the beginning of the array:

SELECT ARRAY_PREPEND(ARRAY_CONSTRUCT(0,1,2,3),'hello');
+-------------------------------------------------+
| ARRAY_PREPEND(ARRAY_CONSTRUCT(0,1,2,3),'HELLO') |
|-------------------------------------------------|
| [                                               |
|   "hello",                                      |
|   0,                                            |
|   1,                                            |
|   2,                                            |
|   3                                             |
| ]                                               |
+-------------------------------------------------+

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