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## ICE Components
Tag columnGroup

To get the multiple dataTable headers or footers with allowable colspan and rowspan, you need to use the columnGroup component inside the "header" or the "footer" facet of the ice:dataTable component.

The "facet" can have a single child only, so one columGroup is required inside the facet. The ice:headerRow component is a valid child of the columnGroup component.

<ice:dataTable .. >
<f:facet name="header">
<ice:columnGroup>
<ice:headerRow>
<ice:column rowspan="2">
<ice:outputText value="First Name"/>
</ice:column>
<ice:column rowspan="2">
<ice:outputText value="Last Name"/>
</ice:column>
<ice:column colspan="2">
<ice:outputText value="Contact Info"/>
</ice:column>
</ice:headerRow>
<ice:headerRow>
<ice:column>
<ice:outputText value="Phone"/>
</ice:column>
<ice:column>
<ice:outputText value="Email"/>
</ice:column>
</ice:headerRow>
</ice:columnGroup>
</f:facet>
<ice:column>
<ice:outputText id="firstName" value="#{person.firstName}"/>
</ice:colum>
.....
</ice:dataTable .. >

Tag Information
Tag Class | com.icesoft.faces.component.ColumnGroupTag
TagExtraInfo Class | None
Body Content | JSP
Display Name | None

Attributes
Name | Required | Request-time | Type | Description
binding | false | false | `java.lang.String` | The value binding expression linking this component to a property in a backing bean
id | false | false | `java.lang.String` | The component identifier for this component. This value must be unique within the closest parent component that is a naming container.
rendered | false | false | `java.lang.String` | Flag indicating whether or not this component should be rendered (during Render Response Phase), or processed on any subsequent form submit.
renderedOnUserRole | false | false | `java.lang.String` | If user is in given role, this component will be rendered normally. If not, nothing is rendered and the body of this tag will be skipped.

Variables
| No Variables Defined.

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