文字列から抽出した値を、複数のインスタンスを持つテーブルに動的に挿入します。

Question

現在、次のような難点に直面しています。これを似た何かに

@string = 'TM_15 <= 0.574803 AND TM_3 <= 0.4 AND TM_9 <= 0.298738 AND TM_8 <= 0.30605 
AND TM_16 <= 0.367816 AND TM_12 <= 0.341463 AND TM_10 <= 0.379487 AND TM_4 <= 0.44186 
AND TM_2 <= 0.45 AND TM_7 <= 0.247525 AND TM_1 <= 0.6 AND TM_13 <= 0.28 AND TM_5 <= 0.285714 
AND TM_11 <= 0.6 AND TM_6 <= 0.448276 AND TM_15 <= 0.285047 AND TM_14 <= 0.6 
AND TM_12 <= 0.248366 AND TM_5 <= 0.245399 AND TM_16 <= 0.09375 AND TM_3 <= 0.372093 
AND TM_15 <= 0.199713 AND TM_10 <= 0.326996 AND TM_9 <= 0.248731 AND TM_8 <= 0.279412 
AND TM_13 <= 0.248577 AND TM_4 <= 0.311475 AND TM_2 <= 0.145833 AND TM_7 <= 0.213483 
AND TM_11 <= 0.199029 AND TM_4 <= 0.165289' 

：私はこれを変換する必要が

TM_0 TM_1  TM_2  TM_3  TM_4  TM_5 ... and on to 16 
     <= 0.6  <= 0.45  <= 0.4  <= 0.44186 <= 0.285714 
        <= 0.145833 <= 0.372093 <= 0.311475 <= 0.245399 
              <= 0.165289  

私は、それぞれの列と値に値を取り除くことができました。私はちょうどそれが可能な限り小さくなるテーブル/テーブルの変数に挿入するように見える。私は1つの文字列のための30以上のエントリを持つ大規模なテーブルを持つことを上陸したくない。理想的には、上記の文字列値の例では、最大テーブルの列数が17で、行数が4である必要があります。ここで、余分なスペースは空白または空白です。

理由があった後に、列が存在する最小の値に縮小されます。

ご意見やご提案を投稿してください。

あなたはこれをやっている理由

Answer 1

全くアイデアのおかげで、しかし、ショーン・ランゲとpivotでコメントで述べたように、あなたはあなたの選択の文字列分割機能を使用して、問題の出力を得ることができ、よりあなたはできinsertテーブルなどへ：

declare @string nvarchar(1000) = 'TM_15 <= 0.574803 AND TM_3 <= 0.4 AND TM_9 <= 0.298738 AND TM_8 <= 0.30605 
AND TM_16 <= 0.367816 AND TM_12 <= 0.341463 AND TM_10 <= 0.379487 AND TM_4 <= 0.44186 
AND TM_2 <= 0.45 AND TM_7 <= 0.247525 AND TM_1 <= 0.6 AND TM_13 <= 0.28 AND TM_5 <= 0.285714 
AND TM_11 <= 0.6 AND TM_6 <= 0.448276 AND TM_15 <= 0.285047 AND TM_14 <= 0.6 
AND TM_12 <= 0.248366 AND TM_5 <= 0.245399 AND TM_16 <= 0.09375 AND TM_3 <= 0.372093 
AND TM_15 <= 0.199713 AND TM_10 <= 0.326996 AND TM_9 <= 0.248731 AND TM_8 <= 0.279412 
AND TM_13 <= 0.248577 AND TM_4 <= 0.311475 AND TM_2 <= 0.145833 AND TM_7 <= 0.213483 
AND TM_11 <= 0.199029 AND TM_4 <= 0.165289' 

select r 
     ,[TM_0] 
     ,[TM_1] 
     ,[TM_2] 
     ,[TM_3] 
     ,[TM_4] 
     ,[TM_5] 
     ,[TM_6] 
     ,[TM_7] 
     ,[TM_8] 
     ,[TM_9] 
     ,[TM_10] 
     ,[TM_11] 
     ,[TM_12] 
     ,[TM_13] 
     ,[TM_14] 
     ,[TM_15] 
     ,[TM_16] 
from (
    select row_number() over (partition by left(s.item,charindex(' ',s.item,1)-1) order by s.rn) as r 
      ,left(s.item,charindex(' ',s.item,1)-1) as c 
      ,substring(s.item,charindex(' ',s.item,1)+1,9999) as v 
    from dbo.fn_StringSplitMax(@string,'and ',null) as s 
    ) as s 
pivot (max(s.v) for c in([TM_0] 
         ,[TM_1] 
         ,[TM_2] 
         ,[TM_3] 
         ,[TM_4] 
         ,[TM_5] 
         ,[TM_6] 
         ,[TM_7] 
         ,[TM_8] 
         ,[TM_9] 
         ,[TM_10] 
         ,[TM_11] 
         ,[TM_12] 
         ,[TM_13] 
         ,[TM_14] 
         ,[TM_15] 
         ,[TM_16] 
         ) 
    ) as p 
order by r 

出力：

+---+------+---------+--------------+----------------+---------------+----------------+--------------+----------------+----------------+--------------+--------------+--------------+--------------+--------------+-----------+--------------+--------------+ 
| r | TM_0 | TM_1 |  TM_2  |  TM_3  |  TM_4  |  TM_5  |  TM_6  |  TM_7  |  TM_8  |  TM_9  | TM_10  | TM_11  | TM_12  | TM_13  | TM_14 | TM_15  | TM_16  | 
+---+------+---------+--------------+----------------+---------------+----------------+--------------+----------------+----------------+--------------+--------------+--------------+--------------+--------------+-----------+--------------+--------------+ 
| 1 | NULL | <= 0.6 | <= 0.45  | <= 0.4   | <= 0.44186 | <= 0.285714 | <= 0.448276 | <= 0.247525 | <= 0.30605  | <= 0.298738 | <= 0.379487 | <= 0.6  | <= 0.341463 | <= 0.28  | <= 0.6 | <= 0.574803 | <= 0.367816 | 
| 2 | NULL | NULL | <= 0.145833 | <= 0.372093 | <= 0.311475 | <= 0.245399 | NULL   | <= 0.213483 | <= 0.279412 | <= 0.248731 | <= 0.326996 | <= 0.199029 | <= 0.248366 | <= 0.248577 | NULL  | <= 0.285047 | <= 0.09375 | 
| 3 | NULL | NULL | NULL   | NULL   | <= 0.165289 | NULL   | NULL   | NULL   | NULL   | NULL   | NULL   | NULL   | NULL   | NULL   | NULL  | <= 0.199713 | NULL   | 
+---+------+---------+--------------+----------------+---------------+----------------+--------------+----------------+----------------+--------------+--------------+--------------+--------------+--------------+-----------+--------------+--------------+ 

---

文字列分割機能：

create function [dbo].[fn_StringSplitMax] 
(
@str nvarchar(max) = ' '   -- String to split. 
,@delimiter as nvarchar(max) = ',' -- Delimiting value to split on. Can be multiple characters. 
,@num as int = null     -- nth value will be returned. NULL returns all. 
) 
returns table 
as 
return 
    with s as 
    (  -- Convert the string to an XML value, replacing the delimiter with XML tags 
     select convert(xml,'<x>' + replace((select @str for xml path('')),@delimiter,'</x><x>') + '</x>').query('.') as s 
    ) 
    select rn 
      ,item  -- Select the values from the generated XML value by CROSS APPLYing to the XML nodes 
    from(select row_number() over (order by (select null)) as rn 
       ,n.x.value('.','nvarchar(max)') as item 
     from s 
      cross apply s.nodes('x') as n(x) 
     ) a 
    where rn = @num 
     or @num is null;