用户数据
UserId DisplayName
12 Rahul
13 Anjali
14 Faruk
15 Shabina
16 Shakira
17 Ali
18 Ronak
19 Dali
20 Bali
21 Kali
22 Katrina
23 Sita
24 Gita
25 Ram
26 Shyam
27 Suhana
28 Suhas
29 Raj
30 Taslim
31 Ritik
32 Tejas
33 Dipika
34 Bush
35 Dyna
36 Bushiar
37 Salman
38 Ruksana
39 Khushi
40 Tazz
41 Miki
42 Krish
43 Kumbh
家谱数据
ID UserID RelativeId Relation
1 12 13 Spouse
3 12 15 Daughter
4 12 16 Daughter
5 12 17 Son
6 12 18 Son
7 13 12 Spouse
9 13 15 Daughter
10 13 16 Daughter
11 13 17 Son
12 13 18 Son
13 14 15 Spouse
14 14 20 Son
15 14 21 Daughter
16 14 19 Daughter
17 15 12 Father
18 15 13 Mother
19 15 14 Spouse
20 15 16 Sister
21 15 18 Brother
22 15 20 Son
23 15 19 Daughter
24 15 21 Daughter
25 16 12 Father
26 16 13 Mother
27 16 17 Spouse
28 16 14 Brother
29 16 18 Brother
30 16 23 Daughter
31 16 24 Daughter
32 16 25 Son
33 16 26 Son
34 17 16 Spouse
35 17 23 Daughter
36 17 24 Daughter
37 17 25 Son
38 17 26 Son
39 18 12 Father
40 18 13 Mother
41 18 19 Spouse
42 18 27 Daughter
43 18 28 Son
44 18 29 Son
45 18 15 Sister
46 18 16 Sister
47 19 14 Father
48 19 15 Mother
49 19 18 Spouse
50 19 27 Daughter
51 19 28 Son
52 19 29 Son
53 19 20 Brother
54 19 21 Sister
55 20 14 Father
56 20 15 Mother
57 20 21 Sister
58 20 19 Sister
59 20 40 Spouse
60 20 42 Son
61 20 43 Son
62 21 14 Father
63 21 15 Mother
64 21 25 Spouse
65 21 40 Daughter
66 21 41 Son
67 21 20 Brother
68 21 19 Sister
102 22 28 Spouse
103 22 31 Son
69 23 16 Mother
70 23 17 Father
71 23 24 Sister
72 23 25 Brother
73 23 26 Brother
74 24 16 Mother
75 24 17 Father
76 24 23 Sister
77 24 25 Brother
78 24 26 Brother
79 25 16 Mother
80 25 17 Father
81 25 23 Sister
82 25 24 Sister
83 25 26 Brother
84 25 21 Spouse
85 25 40 Daughter
86 25 41 Son
87 26 16 Mother
88 26 17 Father
89 26 23 Sister
90 26 24 Sister
91 26 25 Brother
92 26 27 Spouse
93 26 34 Son
94 26 31 Daughter
95 27 18 Father
96 27 19 Mother
97 27 26 Spouse
98 27 28 Brother
99 27 29 Brother
100 27 34 Son
101 27 35 Daughter
104 28 18 Father
105 28 19 Mother
106 28 27 Sister
107 28 29 Brother
108 28 22 Spouse
109 28 31 Son
110 29 18 Father
111 29 19 Mother
112 29 27 Sister
113 29 28 Brother
114 29 30 Spouse
115 29 32 Son
116 30 29 Spouse
117 30 32 Son
118 31 28 Father
119 31 22 Mother
120 31 34 Spouse
121 31 36 Son
122 32 29 Father
123 32 30 Mother
124 32 33 Spouse
125 32 35 Spouse
126 32 37 Son
127 32 38 Daughter
128 33 32 Spouse
129 33 38 Daughter
130 34 26 Father
131 34 27 Mother
132 34 35 Sister
133 34 31 Spouse
134 34 36 Son
135 35 26 Father
136 35 27 Mother
137 35 32 Spouse
138 35 34 Brother
139 35 37 Son
140 36 34 Father
141 36 31 Father
142 37 35 Mother
143 37 32 Father
144 37 38 Spouse
145 37 39 Daughter
146 38 32 Father
147 38 33 Mother
148 38 37 Spouse
149 38 39 Daughter
150 39 37 Father
151 39 38 Mother
152 40 21 Mother
153 40 25 Father
154 40 41 Brother
155 40 20 Spouse
156 40 42 Son
157 40 43 Son
158 41 21 Mother
159 41 25 Father
160 41 40 Sister
161 42 20 Father
162 42 40 Mother
163 42 43 Brother
164 43 20 Father
165 43 40 Mother
166 43 42 Brother
想找到找到Rahul（Id = 12）和Tejas（Id = 32）之间关系的路径，谢谢提前帮助......
上述数据图表：
asstander提供的查询：
DECLARE @Users TABLE(
UserID INT,
UserName VARCHAR(50)
)
DECLARE @FamilyTree TABLE(
UserID INT,
RelationID INT,
Relation VARCHAR(50)
)
INSERT INTO @Users (UserID,UserName) SELECT 1 ,'Rahul'
INSERT INTO @Users (UserID,UserName) SELECT 2 ,'Anjli'
INSERT INTO @Users (UserID,UserName) SELECT 3 ,'Ronak'
INSERT INTO @Users (UserID,UserName) SELECT 4 ,'Rutu'
INSERT INTO @Users (UserID,UserName) SELECT 5 ,'Riya'
INSERT INTO @Users (UserID,UserName) SELECT 6 ,'Rishi'
INSERT INTO @Users (UserID,UserName) SELECT 7 ,'Harry'
INSERT INTO @Users (UserID,UserName) SELECT 8 ,'Dyna'
INSERT INTO @FamilyTree (UserID,RelationID,Relation) SELECT 1, 2 ,'Wife'
INSERT INTO @FamilyTree (UserID,RelationID,Relation) SELECT 2, 1 ,'Rahul'
INSERT INTO @FamilyTree (UserID,RelationID,Relation) SELECT 1, 3 ,'Son'
INSERT INTO @FamilyTree (UserID,RelationID,Relation) SELECT 3, 4 ,'Wife'
INSERT INTO @FamilyTree (UserID,RelationID,Relation) SELECT 3, 5 ,'Daughter'
INSERT INTO @FamilyTree (UserID,RelationID,Relation) SELECT 4, 5 ,'Daughter'
INSERT INTO @FamilyTree (UserID,RelationID,Relation) SELECT 4, 6 ,'Son'
INSERT INTO @FamilyTree (UserID,RelationID,Relation) SELECT 3, 6 ,'Son'
INSERT INTO @FamilyTree (UserID,RelationID,Relation) SELECT 1, 7 ,'Son'
INSERT INTO @FamilyTree (UserID,RelationID,Relation) SELECT 2, 7 ,'Son'
INSERT INTO @FamilyTree (UserID,RelationID,Relation) SELECT 7, 8 ,'Wife'
DECLARE @UserID1 INT,
@UserID2 INT
SELECT @UserID1 = 1,
@UserID2 = 6
DECLARE @Table TABLE(
cnt INT,
cpath VARCHAR(50)
)
;WITH fam AS(
SELECT *,
1 AS CntLevel,
CAST('/' + CAST(ft.UserID AS VARCHAR(10)) + '/' AS VARCHAR(50)) AS CLevel
FROM @FamilyTree ft
WHERE ft.UserID = @UserID1
UNION ALL
SELECT ft.*,
fam.CntLevel + 1 AS CntLevel,
CAST(fam.Clevel + CAST(ft.UserID AS VARCHAR(10)) + '/'AS VARCHAR(50)) AS CLevel
FROM @FamilyTree ft INNER JOIN
fam ON ft.UserID = fam.RelationID
WHERE ft.UserID != @UserID1
)
INSERT INTO @Table(cnt, cpath)
SELECT CntLevel,
CAST(fam.Clevel + CAST(fam.RelationID AS VARCHAR(10)) + '/'AS VARCHAR(50))
FROM fam
WHERE CAST(fam.Clevel + CAST(fam.RelationID AS VARCHAR(10)) + '/'AS VARCHAR(50)) LIKE ('/' + CAST(@UserID1 AS VARCHAR(10)) + '/%')
AND CAST(fam.Clevel + CAST(fam.RelationID AS VARCHAR(10)) + '/'AS VARCHAR(50)) LIKE ('%/' + CAST(@UserID2 AS VARCHAR(10))+ '/')
SELECT DISTINCT
ft.*
FROM @Table t INNER JOIN
@FamilyTree ft ON PATINDEX('%/' + CAST(ft.UserID AS VARCHAR(10)) + '/%',t.cpath) > 0
AND PATINDEX('%/' + CAST(ft.RelationID AS VARCHAR(10)) + '/%',t.cpath) > 0