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For left ARRAY JOIN, expand to the greatest size. If all sizes are zero, resize to one which is the same as the old behavior, i.e. emptyArrayToSingle For non-left ARRAY JOIN, expand to the greatest size but keep empty if all sizes are zero.
3 lines
419 B
SQL
3 lines
419 B
SQL
SELECT number, arr1, arr2, x, y FROM (SELECT number, range(number % 2) AS arr1, range(number % 3) arr2 FROM system.numbers LIMIT 10) ARRAY JOIN arr1 AS x, arr2 AS y SETTINGS enable_unaligned_array_join = 1;
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SELECT number, arr1, arr2, x, y FROM (SELECT number, range(number % 2) AS arr1, range(number % 3) arr2 FROM system.numbers LIMIT 10) LEFT ARRAY JOIN arr1 AS x, arr2 AS y SETTINGS enable_unaligned_array_join = 1;
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