How to create (explode) separate rows using two array columns in presto/SQL

if we have two arrays with same shape. How do we create/explode the separate rows for each element in array associated with other element in second array in Presto SQL.

For eg.,

|           Array1         |           Array2          |
| ------------------------ | ------------------------- |
| [0, 1, 34, 55, 68, 100]  | [40, 10, 30, 50, 60, 88]  |

Desired result

| Column_a | Column_b |
| -------- | -------- |
|     0    |    40    |
|     1    |    10    |
|    34    |    30    |
|    55    |    50    |
|    68    |    60    |
|   100    |    88    |

I tried using

SELECT Column_a, Column_b FROM a
CROSS JOIN UNNEST(Array1) AS t (Column_a)
CROSS JOIN UNNEST(Array2) AS t (Column_b) 

But it gives output with every other array element.

>Solution :

UNNEST allows flattening several arrays at a time:

SELECT Column_a, Column_b 
FROM a
CROSS JOIN UNNEST(Array1, Array2) AS t (Column_a, Column_b)

If length of the arrays differ then the shorter one will be padded with null‘s