How do I convert an array like:

```
[["hello"], ["world"]]

```

To:

```
"hello", "world"

```

I tried `array.join(',')`

But this would return:

```
"hello world"

```

What I want is a string with qoutes: `""hello", "world""`.

---

**For completeness:**

I am trying to build this query from the array.

```
DELETE FROM table WHERE column IN ("hello", "world");

```