在我看来，您只需要使用split_partfunction创建列，就像这样：

SELECT
    split_part(Block, ',', 1) AS Block1,
    split_part(Block, ',', 2) AS Block2,
    split_part(Block, ',', 3) AS Block3,
    split_part(Block, ',', 4) AS Block4,
    split_part(Block, ',', 5) AS Block5,
    split_part(Block, ',', 6) AS Block6,
    split_part(Block, ',', 7) AS Block7,
    split_part(Block, ',', 8) AS Block8,
    split_part(Block, ',', 9) AS Block9
FROM
    your_table