Find item in SharePoint list on a HyperLink field - sharepoint-online

Question

I've looked at as many examples as possible and tried different combinations to what looks like a simple problem - I want to check if an O365 modern list item exists based on a URL (Hyperlink) field. My CAML is as below but returns no results - the list item URL field is a full url and the url variable is a text field containing the full URL also. I've also tried Eq and Contains.
"<View>
<Query>
<Where>
<BeginsWith>
<FieldRef Name='URL'/><Value Type='URL'>" + url + "
</Value>
</BeginsWith>
</Where>
</Query>
</View>"
Thanks,
John.
Full code
var OnePlaceURL = TenantBaseURL + "/sites/" + "oneplacesolutions";
var clientSiteRelativePath = "/sites/" + alias; //Even though the list has the full URL the CAML query has to give a relative path - oddity of SP URL field
var registerList = "DMS Clients";
try
{
using (var context = new ClientContext(OnePlaceURL))
{
context.Credentials = SPOCredentials;
Web web = context.Web;
context.Load(context.Web, w => w.Url);
context.ExecuteQueryRetry();
AddLogMessage(MessageLevel.Info, "AddSiteToOnePlaceSolutionsCentralRegister - loaded web" + context.Web.Url);
var targetList = context.Web.Lists.GetByTitle(registerList);
context.Load(targetList);
context.Load(targetList.Fields);
context.Load(targetList.GetItemById(1));
context.ExecuteQueryRetry();
AddLogMessage(MessageLevel.Info, "AddSiteToOnePlaceSolutionsCentralRegister - loaded list and fields, itemCount:" + targetList.ItemCount);
CamlQuery query = new CamlQuery();
query.ViewXml = "<View><Query><Where><Eq><FieldRef Name='URL'/><Value Type='URL'>" + url + "</Value></Eq></Where></Query></View>";
AddLogMessage(MessageLevel.Info, "ViewXML:" + query.ViewXml);
var itemList = targetList.GetItems(query);
context.Load(itemList); // loading all the fields
context.ExecuteQueryRetry();

Answer 1

As I test,if we add external web site url in list,we could use caml like this:
<View><Query><Where><Eq><FieldRef Name='link' /><Value Type='URL'>http://www.google.com</Value></Eq></Where></Query></View>
If we add some internal site url in list,we need to create the caml like this:
<View><Query><Where><Eq><FieldRef Name='link' /><Value Type='URL'>/sites/dev/subsite</Value></Eq></Where></Query></View>
We do not need to add our tenant url.
More reference:
https://social.msdn.microsoft.com/Forums/office/en-US/2dc874ed-3a3d-4f26-b932-afb25c0142c8/caml-query-on-url-field?forum=sharepointdevelopmentlegacy
Updated:
<script type="text/javascript">
SP.SOD.executeOrDelayUntilScriptLoaded(ValidateForm,"sp.js");
function ValidateForm(){
var clientContext = new SP.ClientContext();
var list = clientContext.get_web().get_lists().getByTitle("test3");
var camlQuery = new SP.CamlQuery();
camlQuery.set_viewXml(
"<View><Query> <Where><Eq><FieldRef Name='link' /><Value Type='Url'>/sites/dev/subsite</Value></Eq></Where></Query></View>");
var items = list.getItems(camlQuery);
clientContext.load(items);
clientContext.executeQueryAsync(Function.createDelegate(this,onSuccess),Function.createDelegate(this, onFail));
function onSuccess(){
var ListEnumerator = items.getEnumerator();
while (ListEnumerator.moveNext()) {
var currentItem = ListEnumerator.get_current();
var link= currentItem.get_item("link");
console.log(link);
}
}
function onFail(sender,args){
console.log(args.get_message());
}
}
</script>