BigQuery: SPLIT() returns only one value

Question

I have a page URL column components of which are delimited by /. I tried to run the SPLIT() function in BigQuery but it only gives the first value.

Answer 1

2018 standardSQL update:

#standardSQL
SELECT SPLIT(path, '/')[OFFSET(0)] part1,
       SPLIT(path, '/')[OFFSET(1)] part2,
       SPLIT(path, '/')[OFFSET(2)] part3
FROM (SELECT "/a/b/aaaa?c" path)

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Now I understand you want them in different columns.

An alternative to the query you provided:

SELECT FIRST(SPLIT(path, '/')) part1,
       NTH(2, SPLIT(path, '/')) part2,
       NTH(3, SPLIT(path, '/')) part3
FROM (SELECT "/a/b/aaaa?c" path)

NTH(X, SPLIT(s)) will provide the Xth value from the SPLIT. FIRST(s) is the same as NTH(1, s)