SQL - INSERT SELECT 两列不重复

Question

我正在尝试执行两个子查询来用两列填充我的表。 wk_start 和 wk_end。 目标是使用特定范围的 date 填充它。

我尝试过交叉连接，但仍然有与此相同的重复项

这是我的代码

insert into bfs_dw.mpt_calendar (wk_start, wk_end)

select 

ter.wk_start,
ter1.wk_end

from

(select * from 
(select ADDDATE('2022-01-03', 7*(t4*10000 + t3*1000 + t2*100 + t1*10 + t0)) wk_start from
 (select 0 t0 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t0,
 (select 0 t1 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t1,
 (select 0 t2 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t2,
 (select 0 t3 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t3,
 (select 0 t4 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t4) v
where wk_start < '2024-01-03'
order by wk_start ) ter

inner JOIN 

(select * from 
(select ADDDATE('2022-01-09', 7*(t4*10000 + t3*1000 + t2*100 + t1*10 + t0)) wk_end from
 (select 0 t0 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t0,
 (select 0 t1 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t1,
 (select 0 t2 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t2,
 (select 0 t3 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t3,
 (select 0 t4 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t4) v
where wk_end < '2024-01-03'
order by wk_end ) ter1 ON 1 = 1

输出显示如下。插入后有很多重复项。

我想要做的是这个预期的结果，一旦插入就没有重复：

注意：这两个子查询运行良好。它的输出是此处发布的最后一张图片。

Answer 1

使用第一个子查询得到wk_start，加上6天得到wk_end

insert into bfs_dw.mpt_calendar (wk_start, wk_end)

select wk_start, wk_start + INTERVAL 6 DAY wk_end from 
(select ADDDATE('2022-01-03', 7*(t4*10000 + t3*1000 + t2*100 + t1*10 + t0)) wk_start from
 (select 0 t0 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t0,
 (select 0 t1 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t1,
 (select 0 t2 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t2,
 (select 0 t3 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t3,
 (select 0 t4 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t4) v
where wk_start < '2024-01-03'