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den-crane/CH-arrays-iteration-using-arrayFilter

Created April 26, 2019 17:46
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CH arrays (K/V) iteration by arrayFilter
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CH-arrays-iteration-using-arrayFilter
Right:
select arrayFilter((v, k) -> k = 'a', values, keys) from
(select ['a','a','b','a'] keys, [1,2,3,4] values)
Wrong:
select arrayMap(i -> values[i], arrayFilter( i -> keys[i] = 'a', arrayEnumerate(keys))) from
(select ['a','a','b','a'] keys, [1,2,3,4] values)
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