Loop and Parse XML in SQL Server - sql-server

Question

I need help to loop in and parse XML the way I wanted in SQL Server, Below is the XML.
DECLARE #Request XML =
'<Customer>
<Order>
<orderData>
<id>1</id>
</orderData>
<orderData>
<id>2</id>
</orderData>
<orderData>
<id>3</id>
<orderItem>
<description>Phone</description>
<price>299</price>
</orderItem>
<orderItem>
<description>Tablet</description>
<price>599</price>
</orderItem>
</orderData>
</Order>
</Customer>'
Below is how I wanted to retrieve data
|ItemId|ItemDesc |ItemPrice|
|1 |NULL |NULL |
|2 |NULL |NULL |
|3 |Phone |299 |
|3 |Tablet |599 |
Only ItemId 3 has description and price but in my query below it's applied to both itemid 1 and 2
SELECT
od.od_col.value('id[1]','int') AS ItemId
, oi.oi_col.value('description[1]','varchar(250)')AS ItemDesc
, oi.oi_col.value('price[1]','varchar(250)') AS ItemPrice
FROM
#Request.nodes('/Customer') cus(cus_col)
CROSS APPLY #Request.nodes('/Customer/Order/orderData') od(od_col)
CROSS APPLY #Request.nodes('/Customer/Order/orderData/orderItem') oi(oi_col)

Answer 1

PLease try the following solution.
SQL
DECLARE #Request XML =
'<Customer>
<Order>
<orderData>
<id>1</id>
</orderData>
<orderData>
<id>2</id>
</orderData>
<orderData>
<id>3</id>
<orderItem>
<description>Phone</description>
<price>299</price>
</orderItem>
<orderItem>
<description>Tablet</description>
<price>599</price>
</orderItem>
</orderData>
</Order>
</Customer>';
SELECT p.value('(id/text())[1]','INT') AS ItemId
, c.value('(description/text())[1]','VARCHAR(250)')AS ItemDesc
, c.value('(price/text())[1]','DECIMAL(10,2)') AS ItemPrice
FROM #Request.nodes('/Customer/Order/orderData') AS t1(p)
OUTER APPLY p.nodes('orderItem') AS t2(c);
Output
+--------+----------+-----------+
| ItemId | ItemDesc | ItemPrice |
+--------+----------+-----------+
| 1 | NULL | NULL |
| 2 | NULL | NULL |
| 3 | Phone | 299.00 |
| 3 | Tablet | 599.00 |
+--------+----------+-----------+