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IsNull element (Query)

  • Article

Applies to: SharePoint 2016 | SharePoint Foundation 2013 | SharePoint Online | SharePoint Server 2013

Used within a query to return items that are empty (Null).

<IsNull>
  <FieldRef Name = "Field_Name"/>
  <Value Type = "Field_Type"/>
  <XML />
</IsNull>

Elements and attributes

The following sections describe attributes, child elements, and parent elements.

Attributes

None

Child elements

Parent elements

Occurrences

  • Minimum: 0
  • Maximum: Unbounded

Example

The following query returns cases where the field base type is 1, the ID column equals the Project column, and the Template column is empty. Results are returned in ascending order by Title and then by ID.

<Query>
  <Where>
    <And>
      <And>
        <Eq>
          <FieldRef Name="BaseType"></FieldRef>
          <Value Type="Integer">1</Value>
        </Eq>
        <Eq>
          <FieldRef Name="Project"></FieldRef>
          <Value Type="Integer">
            <ProjectProperty Select="ID"></ProjectProperty>
          </Value>
        </Eq>
      </And>
      <IsNull>
        <FieldRef Name="Template"></FieldRef>
      </IsNull>
    </And>
  </Where>
  <OrderBy>
    <FieldRef Name="Title"></FieldRef>
    <FieldRef Name="ID"></FieldRef>
  </OrderBy>
</Query>

See also