Question

好的，我正在尝试在SQL Server 2008上执行此操作：

select * 
from tb_contato
inner join tb_url_contato on tb_contato.RIGHT(linkurl, CHARINDEX('/', REVERSE(linkurl)) - 1) = tb_url_contato.url

这不起作用。有关最佳方法的任何建议吗？

感谢。

Answer 1

RIGHT是sql中的内置函数。我认为linkurl是表tb_contato中的一列。

SELECT *
FROM tb_contato
INNER JOIN tb_url_contato 
ON RIGHT(tb_contato.linkurl, CHARINDEX('/', REVERSE(tb_contato.linkurl))-1) = tb_url_contato.url

Answer 2

只需使用right()，即可在没有like的情况下执行此操作。我认为逻辑是：

SELECT *
FROM tb_contato INNER JOIN
     tb_url_contato
     ON tb_contato.linkurl LIKE '%/' + tb_url_contato.url

Answer 3

试试这个

      SELECT * FROM (SELECT * ,RIGHT(linkurl, COALESCE(NULLIF(CHARINDEX('/', REVERSE(linkurl)), 0) - 1, LEN(linkurl))) AS NEWCOL  FROM tb_contato ) AS TA inner join tb_url_contato TB on TA.NEWCOL  = TB.url

内部联接与char索引功能

3 个答案: