0

私はこのクエリを持っています:

SELECT
    XMLELEMENT("row", XMLATTRIBUTES(productMain.variant as "order"),
        (SELECT XMLELEMENT("attribute", XMLATTRIBUTES(product.id as "id") )
        FROM product where product.variant = productMain.variant
        )
    )

FROM
    (SELECT 
        DISTINCT product.variant 
    FROM 
        product
    WHERE
        product.fk_parent = 12345) productMain

「無効な識別子productMain.variant」というエラーが表示されます。

期待される結果：

<row order="1">
    <attribute name="Example1"/>
    <attribute name="Example2"/>
    ...
</row>
<row order="2">
    ...
</row>

表product:

id | variant | name
_________________________
1  | 1       | Example1
2  | 1       | Example2
3  | 2       | Example3
4  | 3       | Example4
5  | 3       | Example5

...

SQLFIDDLE: http://www.sqlfiddle.com/#!4/e91a6/2

私が見つけたのは、Oracleは複数レベルの深さでネストされたサブクエリを関連付けないということです。

希望する結果を得るにはどうすればよいですか?

4

2 に答える 2

0 
SELECT
XMLELEMENT("row", XMLATTRIBUTES(productMain.variant as "order"),
    (SELECT XMLELEMENT("attribute", XMLATTRIBUTES(product.id as "id") )
    FROM product,
    (SELECT DISTINCT variant FROM 
    product
    WHERE fk_parent = 12345) as productMain 
    where product.variant = productMain.variant
    )
)

FROM
(SELECT 
    DISTINCT variant 
FROM 
    product
WHERE
    fk_parent = 12345) productMain
于 2013-10-16T08:37:54.427 に答える
0

解決：

SELECT
XMLELEMENT("row", XMLATTRIBUTES(productMain.variant as "order"),

  (
  SELECT 
    XMLAGG(XMLELEMENT("attribute",XMLATTRIBUTES(product.name as "name"),product.variant)) FROM product 
    where product.fk_parent = 12345
    and product.variant = productmain.variant
  )

).getClobVal()

FROM
(SELECT 
    DISTINCT product.variant 
FROM 
    product
WHERE
    product.fk_parent = 12345) productMain;
于 2013-10-16T09:50:46.090 に答える