如何在 SQL Server 中连接 unicode 字符串？

Question

我有一个独特的情况，我需要基于 2 个组连接行。另一个技巧是串联必须能够显示项目符号并添加换行符。这是我的企业所要求的。我还应该添加最终目的地将是 Excel。我已经使用带有项目符号和换行符的数据测试了通过 SSIS 导出到 Excel，这部分确实有效。

如何去：

pk   orgnl_pk   type   text
1    1          one    • Line One
2    1          one    • Line Two
3    1          one    • Line Three
4    1          two    • Line One
7    3          one    • Line One
8    3          two    • Line One
9    3          two    • Line Two

收件人：

orgnl_pk    type    text
1           one     • Line One
                    • Line Two
                    • Line Three
1           two     • Line One
3           one     • Line One
3           two     • Line One
                    • Line Two

Answer 1

正如 Lamak 所指出的，这最好留给表示层，但如果您现在必须在 sql 中执行...那么这将使用 stuff() with select ... for xml path ('') method of string concatenation。

select 
    orgnl_pk
  , [type]
  , [text]=stuff(
        (
        select char(10) +i.[text]
          from t as i
          where i.orgnl_pk = t.orgnl_pk
            and i.[type]=t.[type]
          order by i.pk 
        for xml path (''), type).value('.','nvarchar(max)')
        ,1,0,'')
from t
group by orgnl_pk, [type]

rextester 演示：http://rextester.com/GPFIMO37322

返回：

+----------+------+--------------+
| orgnl_pk | type |     text     |
+----------+------+--------------+
|        1 | one  | • Line One   |
|          |      | • Line Two   |
|          |      | • Line Three |
|        1 | two  | • Line One   |
|        3 | one  | • Line One   |
|        3 | two  | • Line One   |
|          |      | • Line Two   |
+----------+------+--------------+

---

字符更新（0x0007）：

select 
    orgnl_pk
  , [type]
  , [text]=replace(stuff(
        (
        select char(10)+replace(i.[text],nchar(0x0007),'$BEL$')
          from t as i
          where i.orgnl_pk = t.orgnl_pk
            and i.[type]=t.[type]
          order by i.pk 
        for xml path (''), type).value('.','nvarchar(max)')
        ,1,1,''),'$BEL$',nchar(0x0007))
from t
group by orgnl_pk, [type]