array_last
array_last
array_last
description
Returns the last element in the array for which func(arr1[i]) returns something other than 0.
Syntax
T array_last(lambda, ARRAY<T>)
Use a lambda bool expression and an array as the input parameters, the lambda expression is used to evaluate the internal data of other input ARRAY parameters.
notice
Only supported in vectorized engine
example
mysql> select array_last(x->x>2, [1,2,3,0]) ;
+------------------------------------------------------------------------------------------------+
| array_last(array_filter(ARRAY(1, 2, 3, 0), array_map([x] -> x(0) > 2, ARRAY(1, 2, 3, 0))), -1) |
+------------------------------------------------------------------------------------------------+
| 3 |
+------------------------------------------------------------------------------------------------+
mysql> select array_last(x->x>4, [1,2,3,0]) ;
+------------------------------------------------------------------------------------------------+
| array_last(array_filter(ARRAY(1, 2, 3, 0), array_map([x] -> x(0) > 4, ARRAY(1, 2, 3, 0))), -1) |
+------------------------------------------------------------------------------------------------+
| NULL |
+------------------------------------------------------------------------------------------------+
### keywords
ARRAY, LAST, ARRAY_LAST
