Question

Here’s my setup: I am passing two arrays as XML into a SQL stored procedure.

These are:

<PhoneID Value=128/>
<PhoneID Value=129/>
<PhoneID Value=130/>

and

<AddressID Value=268/>
<AddressID Value=157/>
<AddressID Value=395/>

The Address and Phone tables look like this (pseudo-code follows):

Phone:

BIGINT PhoneID
BIGINT PhoneNumber
SMALLINT AreaCode
INT Extension

Address:

BIGINT AddressID
NVARCHAR StreetAddress
NVARCHAR CountryName
NVARCHAR City
BIGINT Zip

My dilemma is this:

I need to walk through the passed in arrays in lock-step to return

ContactInfo:

BIGINT PhoneNumber
NVARCHAR StreetAddress
BIGINT ZipCode

i.e. I need to return one ContactInfo built from Phone where PhoneID = 128 and Address where AddressID = 268, and another where PhoneID = 129 and AddressID = 268, etc.

My big question is: How do I walk two xml arrays in lock-step in sql?

This is in SQL Server 2008 R2.

Thanks everyone 🙂

Answer 1

Turns out it’s possible to in T-SQL, like so:

CREATE PROCEDURE [dbo].[XmlParsingProcedure]
  @XmlArgs XML
AS
  SELECT * FROM SomeTable
  WHERE (s.XmlArgs IN (select x.XmlArgs.value('@Value','smallint') FROM @XmlArgs.nodes('//XmlArgs') as x(XmlArgs)))

However, intrinsic knowledge of the XML is required.
The above implies the XML schema:

<XmlArgs Value="some value"/>
<XmlArgs Value="some other value"/>
<XmlArgs Value="yet another value"/>

where both, ‘XmlArgs’ and ‘Value’ are case sensitive.