EXAMPLE - Nested Functions

This simple example illustrates how the following functions operate on nested data.

• ARRAYCONCAT - Concatenate multiple arrays together. See ARRAYCONCAT Function.
• ARRAYINTERSECT - Find the intersection of elements between multiple arrays. See ARRAYINTERSECT Function.
• ARRAYCROSS - Compute the cross product of multiple arrays. See ARRAYCROSS Function.
• ARRAYUNIQUE - Generate unique values across multiple arrays. See ARRAYUNIQUE Function.

Source:

Code formatting has been applied to improve legibility.

["A","B","C"]

["1","2","3"]

["A","B"]

["A","B","C"]

["D","E","F"]

["4","5","6"]

Transform:

You can apply the following transforms in the following order. Note that the column names must be different from the transform name, which is a reserved word.

derive type:single value:ARRAYCONCAT([Letters,Numerals]) as:'concat2'

derive type:single value:ARRAYINTERSECT([Letters,Numerals]) as:'intersection2'

derive type:single value:ARRAYCROSS([Letters,Numerals]) as:'cross2'

derive type:single value:ARRAYUNIQUE([Letters,Numerals]) as:'unique2'

["A","B","C"]

["1","2","3"]

["A","B","C","1","2","3"]

[ ]

[["A","1"],["A","2"],["A","3"],
["B","1"],["B","2"],["B","3"],
["C","1"],["C","2"],["C","3"]]

["A","B","C","1","2","3"]

["A","B"]

["A","B","C"]

["A","B","A","B","C"]

["A","B"]

[["A","A"],["A","B"],["A","C"],
["B","A"],["B","B"],["B","C"]]

["A","B","C"]

["D","E","F"]

["4","5","6"]

["D","E","F","4","5","6"]

[ ]

[["D","4"],["D","5"],["D","6"],
["E","4"],["E","5"],["E","6"],
["F","4"],["F","5"],["F","6"]]

["D","E","F","4","5","6"]