An array in Java is a type of variable that can store multiple values. It stores these values based on a key that can be used to subsequently look up that information. Arrays can be useful for ...

SELECT map_subset(c0, c1) FROM ( VALUES ( MAP(ARRAY[ARRAY[1, 2]], ARRAY[1]), ARRAY[ARRAY[1, NULL], ARRAY[2, NULL]] ) ) t(c0, c1); returns "ARRAY comparison not ...