CamlQuery Lookup not correct

Question

I need to display the elements in Column "NetworkNodes" only SRV1 and SRV3 in Lookup, how to write correctly?

The remaining elements of the SRV are not needed.

Doesn't work like that:

Query = @"<Where><And><Eq><FieldRef Name='NetworkNodes' /><Value Type='Lookup'>" + "SRV1" + "</Value></Eq><Eq><FieldRef Name='NetworkNodes' /><Value Type='Lookup'>" + "SRV3" + "</Value></Eq></And></Where>"

Answer 1

If the lookup column does not allow to select multiple values then you should try your query like:

<Where>
    <Or>
        <Eq>
            <FieldRef Name='NetworkNodes'/>
            <Value Type='Lookup'>SRV1</Value>
        </Eq>
        <Eq>
            <FieldRef Name='NetworkNodes'/>
            <Value Type='Lookup'>SRV3</Value>
        </Eq>
    </Or>
</Where>