我有Attribute Table
+-------------+--------------+----------------+-------------------+
| AttributeId | Attribute | AttributeLevel | ParentAttributeId |
+-------------+--------------+----------------+-------------------+
| 1 | Ice Creams | 1 | NULL |
| 2 | Allegr | 1 | NULL |
| 3 | 110 mlS k | 2 | 1 |
| 4 | 125 mlC p | 2 | 1 |
| 5 | 4750 ml b | 2 | 1 |
| 12 | Extra Virgin | 2 | 2 |
| 13 | Extra Lite | 2 | 2 |
| 14 | Pomace | 2 | 2 |
+-------------+--------------+----------------+-------------------+
另一个包含属性
下的每个产品的表+--------------------+---------------------------------+-------------+
| ProductAttributeid | ProductCode | attributeid |
+--------------------+---------------------------------+-------------+
| 16 | CHOCOLAT I TE LITE 500 ml Tub | 6 |
| 20 | VANIL ITE 500 ml Tub | 6 |
| 21 | CAR R 75 ml | 7 |
| 22 | PEANU RPRISE BAR 75 ml | 7 |
| 23 | BERRIE EAM 100 ml | 10 |
| 24 | MANGO SORBET 100 ml Stick | 10 |
| 25 | RASPBERRY SORBET 100 ml Stick | 10 |
| 26 | ALMOND 110 ml Stick | 3 |
| 27 | BELGIAN CHOCOLATE 110 ml Stick | 3 |
| 28 | HAZELN tick | 3 |
| 29 | COOKIE ml Cup | 4 |
| 30 | DOU TE 125 Cup | 4 |
| 31 | NATUR ERRY 125 Cup | 4 |
| 32 | PRAL AM 125 Cup | 4 |
| 33 | PREMI LA 125 ml Cup | 4 |
| 34 | TIRAM 5 ml Cup | 4 |
| 35 | CHOCOLA WNIE DELIGHT 500 ml Tub | 6 |
| 36 | COOK AM 500 ml Tub | 6 |
| 37 | DOUBL COLATE 500 | 6 |
| 38 | MANG BET 500 ml | 6 |
| 39 | NATUR WBERRY 500 ml Tub | 6 |
| 40 | PRALI AM 500 ml Tub | 6 |
| 41 | PREMIU ANILLA 500 ml Tub | 6 |
| 42 | STRAWB ECAKE 500 ml Tub | 6 |
| 43 | CARAM ISCUIT 500 | 6 |
| 44 | LEM EESE CAKE 50 | 6 |
| 45 | TIRAMI 00 ml Tub | 6 |
| 46 | CHOCOL ZELNUT 500 ml Tub | 6 |
| 47 | COOKIE REAM 1000 ml Tub | 11 |
| 48 | DOUB OCOLATE 1000 ml Tub | 11 |
| 49 | MOCH LMOND FUDGE 1000 ml Tub | 11 |
| 50 | NATUR BERRY ml Tub | 11 |
| 51 | PREMIU ANILLA ml Tub | 11 |
| 52 | CARAME RUNCH ml Tub | 5 |
| 53 | CHEER OO ml Tub | 5 |
| 54 | CHOCO OWNIE DELIGHT 4750 ml Tub | 5 |
| 55 | COOKIE EAM 4750 ml Tub | 5 |
| 56 | DOUBL COLATE 4750 ml Tub | 5 |
| 57 | MANG RBET 4750 ml Tub | 5 |
| 58 | RASPB ET 4750 ml Tub | 5 |
| 59 | MOCHA LMON 750 ml Tub | 5 |
| 60 | NATUR RY 4750 ml Tub | 5 |
| 61 | PRALINE CREAM 4750 ml Tub | 5 |
| 62 | PRE VANILLA 4750 ml Tub | 5 |
| 63 | TIRAM 50 ml Tub | 5 |
+--------------------+---------------------------------+-------------+
我需要在父属性的每个属性下找到产品数量 例如，属性1具有childAttribute 3,4等。因此，针对属性1的产品计数应该是3,4等（其所有子项）的总和。 3没有孩子 - 所以它的产品数量应该等于它的实际产品数量本身（因为没有孩子）
输出表格应为
格式+-------------+----------------+
| AttributeId | Count_Product |
+-------------+----------------+
| | |
+-------------+----------------+
答案 0 :(得分：1)
使用CTE构建属性层次结构，然后使用COUNT和GROUP BY
DECLARE @AttributeId INT = 14 --Use use Attribute value here
;WITH CTE_AT
AS (
SELECT AttributeId,ParentAttributeId
FROM @Attribute
WHERE AttributeId = @AttributeId
UNION ALL
SELECT A.AttributeId,A.ParentAttributeId
FROM @Attribute AS A
INNER JOIN CTE_AT AS C ON C.ParentAttributeId = A.AttributeId
)
SELECT P.attributeid,COUNT(*) AS Count_Product
FROM CTE_AT AS C
INNER JOIN ProductAttribute AS P
ON P.attributeid = C.AttributeId
GROUP BY P.attributeid
OPTION ( MAXRECURSION 0 );
答案 1 :(得分：1)
试试这个。
希望它可以帮到你：
TABLE SCHEMA：
DECLARE @Attribute TABLE(AttributeId INT, Attribute VARCHAR(50), AttributeLevel INT, ParentAttributeId INT)
INSERT INTO @Attribute VALUES
(1 ,' Ice Creams',1 ,NULL )
,( 2,'Allegr ', 1, NULL)
,( 3,'110 mlS k ', 2, 1 )
,( 4,'125 mlC p ', 2, 1 )
,( 5,'4750 ml b ', 2, 1 )
,(12,'Extra Virgi', 2, 2 )
,(13,'Extra Lite ', 2, 2 )
,(14,'Pomace ', 2, 2 )
DECLARE @Product TABLE( ProductAttributeid INT, ProductCode VARCHAR(100) , attributeid INT)
INSERT INTO @Product VALUES
(16 , 'CHOCOLAT I TE LITE 500 ml Tub ', 6)
,(20 , 'VANIL ITE 500 ml Tub ', 6)
,(21 , 'CAR R 75 ml ', 7)
,(22 , 'PEANU RPRISE BAR 75 ml ', 7)
,(23 , 'BERRIE EAM 100 ml ', 10)
,(24 , 'MANGO SORBET 100 ml Stick ', 10)
,(25 , 'RASPBERRY SORBET 100 ml Stick ', 10)
,(26 , 'ALMOND 110 ml Stick ', 3)
,(27 , 'BELGIAN CHOCOLATE 110 ml Stick ', 3)
,(28 , 'HAZELN tick ', 3)
,(29 , 'COOKIE ml Cup ', 4)
,(30 , 'DOU TE 125 Cup ', 4)
,(31 , 'NATUR ERRY 125 Cup ', 4)
,(32 , 'PRAL AM 125 Cup ', 4)
,(33 , 'PREMI LA 125 ml Cup ', 4)
,(34 , 'TIRAM 5 ml Cup ', 4)
,(35 , 'CHOCOLA WNIE DELIGHT 500 ml Tub ', 6)
,(36 , 'COOK AM 500 ml Tub ', 6)
,(37 , 'DOUBL COLATE 500 ', 6)
,(38 , 'MANG BET 500 ml ', 6)
,(39 , 'NATUR WBERRY 500 ml Tub ', 6)
,(40 , 'PRALI AM 500 ml Tub ', 6)
,(41 , 'PREMIU ANILLA 500 ml Tub ', 6)
,(42 , 'STRAWB ECAKE 500 ml Tub ', 6)
,(43 , 'CARAM ISCUIT 500 ', 6)
,(44 , 'LEM EESE CAKE 50 ', 6)
,(45 , 'TIRAMI 00 ml Tub ', 6)
,(46 , 'CHOCOL ZELNUT 500 ml Tub ', 6)
,(47 , 'COOKIE REAM 1000 ml Tub ', 11)
,(48 , 'DOUB OCOLATE 1000 ml Tub ', 11)
,(49 , 'MOCH LMOND FUDGE 1000 ml Tub ', 11)
,(50 , 'NATUR BERRY ml Tub ', 11)
,(51 , 'PREMIU ANILLA ml Tub ', 11)
,(52 , 'CARAME RUNCH ml Tub ', 5)
,(53 , 'CHEER OO ml Tub ', 5)
,(54 , 'CHOCO OWNIE DELIGHT 4750 ml Tub ', 5)
,(55 , 'COOKIE EAM 4750 ml Tub ', 5)
,(56 , 'DOUBL COLATE 4750 ml Tub ', 5)
,(57 , 'MANG RBET 4750 ml Tub ', 5)
,(58 , 'RASPB ET 4750 ml Tub ', 5)
,(59 , 'MOCHA LMON 750 ml Tub ', 5)
,(60 , 'NATUR RY 4750 ml Tub ', 5)
,(61 , 'PRALINE CREAM 4750 ml Tub ', 5)
,(62 , 'PRE VANILLA 4750 ml Tub ', 5)
,(63 , 'TIRAM 50 ml Tub ', 5)
此处查询开始：
SELECT A.AttributeId, ISNULL(B.AttributeId ,A.AttributeId)Child
INTO #Temp
FROM @Attribute A
LEFT JOIN(
SELECT A.AttributeId, B.AttributeId ParentAttributeId
FROM @Attribute A
JOIN @Attribute B ON A.ParentAttributeId=B.AttributeId)B ON A.AttributeId=B.ParentAttributeId
UNION
SELECT ParentAttributeId, ParentAttributeId
FROM @Attribute
WHERE ParentAttributeId IS NOT NULL
SELECT T.Attributeid,COUNT(1)Count_Product
FROM #Temp T
INNER JOIN @Product P ON T.Child=P.attributeid
GROUP BY T.attributeid
DROP TABLE #Temp
<强>输出：
attributeid Count_Product
1 21
3 3
4 6
5 12