...
Row-set columns types | Name(Signature) | Description |
|---|---|---|
T | explode(a ARRAY<T>) | Explodes an array to multiple rows. Returns a row-set with a single column (col), one row for each element from the array. |
| int,T | posexplode(a ARRAY<T>) | Explodes an array to multiple rows with additional positional column of int type (position of items in the original array, starting with 0). Returns a row-set with two columns (pos,val), one row for each element from the array. |
Tk,Tv | explode(m MAP<Tk,Tv>) | Explodes a map to multiple rows. Returns a row-set with a two columns (key,value) , one row for each key-value pair from the input map. (As of Hive 0.8.0.). |
T1,T2,...,Tn | inline(a ARRAY<STRUCT<f1:T1,f2:T2,...,fn:Tn>>) | Explodes an array of structs to multiple rows. Returns a row-set with N columns (N = number of top level elements in the struct), one row per struct from the array. (As of Hive 0.10.) |
tuple | json_tuple(jsonStr, k1, k2, ...) | Takes a set of names (keys) and a JSON string, and returns a tuple of values. This is a more efficient version of the |
tuple | parse_url_tuple(url, p1, p2, ...) | This is similar to the |
T1,...,Tn/r | stack(r int, V1 T1,V2 T2,...,Vn-1 Tn/r-1,Vn Tn/r) | Breaks up n values - V1,...,Vn into rrows. Each row will have n/r columns. r must be constant. |
...