Question

如何按行号分几个部分的表格？条件可能如下所示：

create table part1 as
Select * from table
where row_number between 1 and 1000000

create table part2 as
Select * from table
where row_number between 1000001 and 2000000

THX

Answer 1

您可以使用ROW_NUMBER()子句中的QUALIFY。它会是这样的

Select * from table
QUALIFY ROW_NUMBER() OVER(ORDER BY id) BETWEEN 1 and 1000000;

Select * from table
QUALIFY ROW_NUMBER() OVER(ORDER BY id) BETWEEN 1000001 and 2000000;

您可以使用这些查询创建表格。考虑ORDER BY选项必须是某种组合，使行唯一，以便获得一致的结果。

Teradata：如何按行号划分表格？

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