die Suche nach Auftreten von Substrings in einem anderen String

Question

Ich habe zwei MS SQL-Tabellen:

Ich habe mit einer Schleife sagen, wenn alle Zeichen der Saiten der Tabelle einer in der Kette der enthaltenen Tabelle zwei.

z.

(_a_b_c_d_) is contained in (_a_c_b_d_) 

(_a_b_) is contained in (_g_b_a_) 

(_a_f_d_) is not contained in (_a_c_b_d_) 

Hoffe, Sie können helfen!

Dank

--edit

Unterstrichen sind delimiters

Hier welches Ergebnis aussehen kann:

enter image description here

Answer 1

Sie können dies versuchen:

DECLARE @xml1 xml, @xml2 xml 

SELECT @xml1= (
SELECT (CAST('<b id="'+cast(id as nvarchar(2)) + '"><a>' + REPLACE(string,'_','</a><a>') + '</a></b>' as xml)) 
from table1 
FOR XML PATH('') 
) 

SELECT @xml2= (
SELECT (CAST('<b id="'+cast(id as nvarchar(2)) + '"><a>' + REPLACE(string,'_','</a><a>') + '</a></b>' as xml)) 
from table2 
FOR XML PATH('') 
) 

;WITH res1 AS (
SELECT t.v.value('../@id','int') as id, 
     t.v.value('.','char(1)') as chars 
FROM @xml1.nodes('/b/a') as t(v) 
WHERE t.v.value('.','char(1)') !='' 
), res2 AS (
SELECT t.v.value('../@id','int') as id, 
     t.v.value('.','char(1)') as chars 
FROM @xml2.nodes('/b/a') as t(v) 
WHERE t.v.value('.','char(1)') !='' 
), cte1 AS (
SELECT distinct id, (SELECT '_' + r.chars FROM res1 r WHERE r.id = r1.id ORDER BY r.id, r.chars FOR XML PATH('')) + '_' as string 
FROM res1 r1 
), cte2 AS (
SELECT distinct id, (SELECT '_' + r.chars FROM res2 r WHERE r.id = r2.id ORDER BY r.id, r.chars FOR XML PATH('')) + '_' as string 
FROM res2 r2 
) 

SELECT t1.id as table1id, t2.id as table2id 
FROM cte1 t1 
INNER JOIN cte2 t2 ON t2.string LIKE '%'+t1.string+'%' --t1.string LIKE '%'+t2.string+'%' 
ORDER BY t1.id 

Ergebnisse:

table1id table2id 
----------- ----------- 
1   1 
2   1 
2   4 
4   1 
4   3 

(5 row(s) affected) 

Wie ich _a_b_ sehen kann, ist in _a_c_b_d_ conteined.