Hive parse and edit array to struct field - hadoop

Question

I've a requirement in hive complex data structure which I'm new to. I've tried few things which didn't work out. I'd like to know if there is a solution or I'm looking at a dead end.
Requirement :
Table1 and Table2 are of same create syntax. I want to select all columns from table1 and insert it into table2, where few column values will be modified. For struct field also, I can make it work using named_struct.
But if table1 has array> type, then I'm not sure how to make it work.
eg.,
CREATE TABLE IF NOT EXISTS table1 (
ID INT,
XYZ array<STRUCT<X:DOUBLE, Y:DOUBLE, Z:DOUBLE>>
)
ROW FORMAT DELIMITED
FIELDS TERMINATED BY ','
COLLECTION ITEMS TERMINATED BY '$'
MAP KEYS TERMINATED BY '#' ;
CREATE TABLE IF NOT EXISTS table2 (
ID INT,
XYZ array<STRUCT<X:DOUBLE, Y:DOUBLE, Z:DOUBLE>>
)
ROW FORMAT DELIMITED
FIELDS TERMINATED BY ','
COLLECTION ITEMS TERMINATED BY '$'
MAP KEYS TERMINATED BY '#' ;
hive> select * from table1 ;
OK
1 [{"x":1,"y":2,"z":3},{"x":4,"y":5,"z":6},{"x":7,"y":8,"z":9}]
2 [{"x":4,"y":5,"z":6},{"x":7,"y":8,"z":9}]
How can I update a struct field in array while inserting. Let's say if structField y is 5, then I want it to be inserted as 0.

Answer 1

For complex type struct you can use Brickhouse UDF.Download the jar and add it in your script.
add jar hdfs://path_where_jars_are_downloaded/brickhouse-0.6.0.jar
Create a collect function.
create temporary function collect_arrayofstructs as 'brickhouse.udf.collect.CollectUDAF';
Query:Replace the y value with 0
select ID, collect_arrayofstructs(
named_struct(
"x", x,
"y", 0,
"z", z,
)) as XYZ
from table1;