[SQL] array_lower /array_prepend doubt

[Rajesh Kumar Mallah]

Greetings!

can anyone explain why
SELECT array_lower(array_prepend(0, ARRAY[1,2,3]), 1);
returns 0 not 1
because

tradein_clients=# SELECT array_prepend(0, ARRAY[1,2,3]);
+---------------+
| array_prepend |
+---------------+
| {0,1,2,3}     |
+---------------+
(1 row)


and

tradein_clients=# SELECT array_lower( ARRAY[0,1,2,3],1 );
+-------------+
| array_lower |
+-------------+
|           1 |
+-------------+
(1 row)
Time: 402.614 ms

Regds
Mallah.
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