"Type conversion in expression" warning

[JustinPealing]

SSMS can show warnings as an icon in the node itself and an explanation in the tooltip

See issue7.sqlplan for an example, representation in XML:

<Warnings>
  <PlanAffectingConvert ConvertIssue="Cardinality Estimate" Expression="CONVERT(varchar(150),[mcLive].[Cadastre].[OwnerPersonParsed].[Surname],0)" />
  <PlanAffectingConvert ConvertIssue="Cardinality Estimate" Expression="CONVERT(varchar(150),[mcLive].[Cadastre].[OwnerPersonParsed].[BirthName],0)" />
</Warnings>

[JustinPealing]

The schema indicates there are other similar warnings:

<xsd:element name="ColumnsWithNoStatistics" type="shp:ColumnReferenceListType" minOccurs="0" maxOccurs="1"/>
<xsd:element name="SpillToTempDb" type="shp:SpillToTempDbType" minOccurs="0" maxOccurs="unbounded"/>
<xsd:element name="Wait" type="shp:WaitWarningType" minOccurs="0" maxOccurs="unbounded"/>
<xsd:element name="PlanAffectingConvert" type="shp:AffectingConvertWarningType" minOccurs="0" maxOccurs="unbounded"/>
<xsd:element name="SortSpillDetails" type="shp:SortSpillDetailsType" minOccurs="0" maxOccurs="unbounded"/>
<xsd:element name="HashSpillDetails" type="shp:HashSpillDetailsType" minOccurs="0" maxOccurs="unbounded"/>
<xsd:element name="MemoryGrantWarning" type="shp:MemoryGrantWarningInfo" minOccurs="0" maxOccurs="1"/>

[JustinPealing]

Same as #66