Insérer une clause where dans une requête CAML - à l'aide de SharePoint, SPServices, JavaScript et jQuery

Je suis en train d'insérer une clause where dans mon CAML requête pour filtrer une colonne de date pour les NULS (je veux retourner toutes les lignes pour lesquelles il n'y a pas de date en Attribuer la Date de la colonne).

C'est pour une Liste SharePoint. Le code est à l'aide de la SPServices, jQuery et JavaScript

Je suis tout à fait avoir une fois, tirant ce hors - j'ai très peu d'expérience dans la réalisation de ce type d'intégration et moins encore à l'aide de CAML.

C'est la requête CAML segment de code:

function loadPrioritizedList() {
$("#tasksUL").empty();
$().SPServices({
operation: "GetListItems",    
webURL: myURL,
listName: targetListName,
CAMLViewFields: "<ViewFields><FieldRef Name='Priority_x0020_Number' /><FieldRef Name='Edit_x0020_Link' /><FieldRef Name='Priority' /><FieldRef Name='Top_x0020_Item_x003f_' /><FieldRef Name='Purpose' /><FieldRef Name='Item_x002d_Task_x0020_Order' /><FieldRef Name='Mode' /><FieldRef Name='Work_x0020_Status' /><FieldRef Name='DueDate' /><FieldRef Name='Task_x0020_Type' /><FieldRef Name='DAK_x0020_Date' /><FieldRef Name='DAK_x0020_No' /><FieldRef Name='AssignedTo' /><FieldRef Name='Money_x0020_Estimate' /><FieldRef Name='ItemStatus' /><FieldRef Name='Assign_x0020_Date' /></ViewFields>",
CAMLQuery: '<Query>' +
'<OrderBy>' +
'<FieldRef Name="Priority_x0020_Number" />' +
'</OrderBy>' +
'</Query>', 
CAMLRowLimit: listrowlimit,  
completefunc: function (xData, Status) {
$(xData.responseXML).SPFilterNode("z:row").each(function() {
var tdHtml = "<tr class='sortable_row' id=" + $(this).attr("ows_ID") + ">";
tdHtml = tdHtml + "<td style=\"width:60px;\">" + PriorityFormat($(this).attr("ows_Priority_x0020_Number"));  + "</td>";
tdHtml = tdHtml + '<td style=\"width:49px;\"><a href=\"'+($(this).attr("ows_Edit_x0020_Link")).split(", ")[1] + '\">' + ($(this).attr("ows_Edit_x0020_Link")).split(", ")[1] + '</a></td>';
tdHtml = tdHtml + "<td style=\"width:83px;\">" + $(this).attr("ows_Priority") + "</td>";
tdHtml = tdHtml + "<td style=\"width:63px;\">" + TopItem($(this).attr("ows_Top_x0020_Item_x003f_")) + "</td>";
tdHtml = tdHtml + "<td style=\"width:300px;\">" + StringChk($(this).attr("ows_Purpose")) + "</td>";
tdHtml = tdHtml + "<td style=\"width:125px;\">" + StringChk($(this).attr("ows_Item_x002d_Task_x0020_Order")) + "</td>";                     
tdHtml = tdHtml + "<td style=\"width:40px;\">" + StringChk($(this).attr("ows_Mode")) + "</td>";
tdHtml = tdHtml + "<td style=\"width:75px;\">" + StringChk($(this).attr("ows_Task_x0020_Type")) + "</td>";
tdHtml = tdHtml + "<td style=\"width:150px;\">" + StringChk($(this).attr("ows_Work_x0020_Status")) + "</td>";
tdHtml = tdHtml + "<td style=\"width:100px;\">" + FormatDate($(this).attr("ows_DueDate")) + "</td>";
tdHtml = tdHtml + "<td style=\"width:100px;\">" + FormatDate($(this).attr("ows_DAK_x0020_Date")) + "</td>";
tdHtml = tdHtml + "<td style=\"width:100px;\">" + StringChk($(this).attr("ows_DAK_x0020_No")) + "</td>";
tdHtml = tdHtml + "<td style=\"width:300px;\">" + StringChk($(this).attr("ows_AssignedTo")) + "</td>";
tdHtml = tdHtml + "<td style=\"width:125px;\">" + $(this).attr("ows_Money_x0020_Estimate") + "</td>";
tdHtml = tdHtml + "<td style=\"width:75px;\">" + StringChk($(this).attr("ows_ItemStatus")) + "</td>";
tdHtml = tdHtml + "<td style=\"width:100px;\">" + FormatDate($(this).attr("ows_Assign_x0020_Date")) + "</td>";
tdHtml = tdHtml + "</tr>";
$("#tasksUL").append(tdHtml);
});
}
});

Toute aide sera la bienvenue bienvenue, et je vous en remercie d'avance.

Mise à JOUR:
La dernière incarnation du code est ci-dessous. J'ai ajouté la clause "where" comme:

"<Where><Eq><FieldRef Name=Assign_x0020_Date' /><Value Type='Date and Time'>IsNull</Value></Eq></Where>" +

Mais il n'obtient toujours pas de résultats. Je ne suis pas sûr, à ce point de ce que je suis absent ici.

La requête ci-dessus est plus ressemble à ceci:

function loadPrioritizedList() {
$("#tasksUL").empty();
$().SPServices({
operation: "GetListItems",    
webURL: myURL,
listName: targetListName,
CAMLViewFields: "<ViewFields><FieldRef Name='Priority_x0020_Number' /><FieldRef Name='Edit_x0020_Link' /><FieldRef Name='Priority' /><FieldRef Name='Top_x0020_Item_x003f_' /><FieldRef Name='Purpose' /><FieldRef Name='Item_x002d_Task_x0020_Order' /><FieldRef Name='Mode' /><FieldRef Name='Work_x0020_Status' /><FieldRef Name='DueDate' /><FieldRef Name='Task_x0020_Type' /><FieldRef Name='DAK_x0020_Date' /><FieldRef Name='DAK_x0020_No' /><FieldRef Name='AssignedTo' /><FieldRef Name='Money_x0020_Estimate' /><FieldRef Name='ItemStatus' /><FieldRef Name='Assign_x0020_Date' /></ViewFields>",
CAMLQuery: '<Query>' +
"<Where><Eq><FieldRef Name='Assign_x0020_Date' /><Value Type='Date and Time'>IsNull</Value></Eq></Where>" +
'<OrderBy>' +
'<FieldRef Name="Priority_x0020_Number" />' +
'</OrderBy>' +
'</Query>', 
InformationsquelleAutor WCS | 2013-06-26