Table.Partition

Table.Partition ( table as table, column as text, groups as number, hash as function) as list

根据 columnhash 函数的值,将 table 分区为一组 groups 个表。 hash 函数应用于 column 行的值,以获取该行的哈希值。哈希值模数 groups 确定要将该行放入所返回的哪个表中。

  • table: 要分区的表。
  • column: 要执行哈希运算以确定该行位于返回的哪个表中的列。
  • groups: 要对输入表进行分区的表数。
  • hash: 应用以获取哈希值的函数。
示例:

使用列的值作为哈希函数,基于列 [a] 将表 ({[a = 2, b = 4], [a = 6, b = 8], [a = 2, b = 4], [a = 1, b = 4]}) 分区为 2 个表。

使用情况:

Table.Partition(Table.FromRecords({[a = 2, b = 4], [a = 1, b = 4], [a = 2, b = 4], [a = 1, b = 4]}), "a", 2, each _)

输出:
{ Table.FromRecords({[a = 2, b = 4], [a = 2, b = 4]}, {
    "a",
    "b"
}),
    Table.FromRecords({[a = 1, b = 4], [a = 1, b = 4]}, {
    "a",
    "b"
}) }

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