anchor.diff:    ref_id = 'R.ID'
   -%>
   <% if a.referenced_entity.name == entity.name -%>
  -          "<%=j_escape_string("LEFT JOIN #{ a.referenced_entity.sync.sync_temp_entity.sql.qualified_table_name } AS R ON R.MappingID = S.#{ entity.sync.sync_temp_entity.attribute_by_name("#{a.name}MappingID").sql.quoted_column_name } AND R.#{ entity.sync.sync_temp_entity.attribute_by_name(:MappingSource).sql.quoted_column_name } = S.#{ entity.sync.sync_temp_entity.attribute_by_name(:MappingSource).sql.quoted_column_name } ")%>" +
  +          "<%=j_escape_string("LEFT JOIN #{ a.referenced_entity.sync.sync_temp_entity.sql.qualified_table_name } AS R ON R.#{ entity.sync.sync_temp_entity.attribute_by_name(:MappingID).sql.quoted_column_name } = S.#{ entity.sync.sync_temp_entity.attribute_by_name("#{a.name}MappingID").sql.quoted_column_name } AND R.#{ entity.sync.sync_temp_entity.attribute_by_name(:MappingSource).sql.quoted_column_name } = S.#{ entity.sync.sync_temp_entity.attribute_by_name(:MappingSource).sql.quoted_column_name } ")%>" +
   <% elsif a.referenced_entity.abstract? -%>
   <%
     refs = []
     a.referenced_entity.concrete_subtypes.each_with_index do |subtype, index|
       refs << "R#{index}"
   -%>
  -          "<%=j_escape_string(" LEFT JOIN #{ subtype.sync.master_entity.sql.qualified_table_name } AS R#{ index } ON R#{ index }.MappingID = S.#{ entity.sync.sync_temp_entity.attribute_by_name("#{a.name}MappingID").sql.quoted_column_name } AND R#{ index }.MappingSource = S.MappingSource AND R#{ index }.DeletedAt IS NULL ")%>" +
  +          "<%=j_escape_string(" LEFT JOIN #{ subtype.sync.master_entity.sql.qualified_table_name } AS R#{ index } ON R#{ index }.#{ entity.sync.sync_temp_entity.attribute_by_name(:MappingID).sql.quoted_column_name } = S.#{ entity.sync.sync_temp_entity.attribute_by_name("#{a.name}MappingID").sql.quoted_column_name } AND R#{ index }.#{ entity.sync.master_entity.attribute_by_name(:MappingSource).sql.quoted_column_name } = S.#{ entity.sync.master_entity.attribute_by_name(:MappingSource).sql.quoted_column_name } AND R#{ index }.#{ entity.sync.master_entity.attribute_by_name(:DeletedAt).sql.quoted_column_name } IS NULL ")%>" +
   <% end
     ref_id = "COALESCE(#{refs.join(',')})"
   -%>
   
   <% else -%>
  -          "<%=j_escape_string("LEFT JOIN #{ a.referenced_entity.sync.master_entity.sql.qualified_table_name } AS R ON R.MappingID = S.#{ entity.sync.sync_temp_entity.attribute_by_name("#{a.name}MappingID").sql.quoted_column_name } AND R.MappingSource = S.MappingSource AND R.DeletedAt IS NULL ")%>" +
  -<% end -%>
  -<% end -%>
  -          "<%=j_escape_string("JOIN #{ entity.sync.master_entity.sql.qualified_table_name } AS M ON M.DeletedAt IS NULL AND M.MappingKey = S.MappingKey AND M.MappingID = S.MappingID AND M.MappingSource = S.MappingSource AND M.#{ entity.sync.master_entity.attribute_by_name(a.name).sql.quoted_column_name } IS NOT NULL AND M.#{ entity.sync.master_entity.attribute_by_name(a.name).sql.quoted_column_name } <> #{ a.reference? ? ref_id : "S.#{entity.sync.sync_temp_entity.attribute_by_name(a.reference? ? "#{a.name}MappingID" : a.name).sql.quoted_column_name}" } ")%>" +
  +          "<%=j_escape_string("LEFT JOIN #{ a.referenced_entity.sync.master_entity.sql.qualified_table_name } AS R ON R.#{ entity.sync.sync_temp_entity.attribute_by_name(:MappingID).sql.quoted_column_name } = S.#{ entity.sync.sync_temp_entity.attribute_by_name("#{a.name}MappingID").sql.quoted_column_name } AND R.#{ entity.sync.master_entity.attribute_by_name(:MappingSource).sql.quoted_column_name } = S.#{ entity.sync.master_entity.attribute_by_name(:MappingSource).sql.quoted_column_name } AND R.#{ entity.sync.master_entity.attribute_by_name(:DeletedAt).sql.quoted_column_name } IS NULL ")%>" +
  +<% end -%>
  +<% end -%>
  +          "<%=j_escape_string("JOIN #{ entity.sync.master_entity.sql.qualified_table_name } AS M ON M.#{ entity.sync.master_entity.attribute_by_name(:DeletedAt).sql.quoted_column_name } IS NULL AND M.#{ entity.sync.master_entity.attribute_by_name(:MappingKey).sql.quoted_column_name } = S.#{ entity.sync.master_entity.attribute_by_name(:MappingKey).sql.quoted_column_name } AND M.#{ entity.sync.sync_temp_entity.attribute_by_name(:MappingID).sql.quoted_column_name } = S.#{ entity.sync.sync_temp_entity.attribute_by_name(:MappingID).sql.quoted_column_name } AND M.#{ entity.sync.master_entity.attribute_by_name(:MappingSource).sql.quoted_column_name } = S.#{ entity.sync.master_entity.attribute_by_name(:MappingSource).sql.quoted_column_name } AND M.#{ entity.sync.master_entity.attribute_by_name(a.name).sql.quoted_column_name } IS NOT NULL AND M.#{ entity.sync.master_entity.attribute_by_name(a.name).sql.quoted_column_name } <> #{ a.reference? ? ref_id : "S.#{entity.sync.sync_temp_entity.attribute_by_name(a.reference? ? "#{a.name}MappingID" : a.name).sql.quoted_column_name}" } ")%>" +
             "<%=j_escape_string("WHERE S.#{ entity.sync.master_entity.attribute_by_name(:MappingSource).sql.quoted_column_name } = ?")%>";
           if ( !verify<%= entity.qualified_name.gsub('.','') %>ViaSql( mappingSourceCode, sql, "Attempted to modify set once attribute <%= a.qualified_name %>", recorder ) )
           {
  
positive.code:           "SELECT S.* " +
            " FROM " +
            "<%=j_escape_string("   #{ entity.sync.sync_temp_entity.sql.qualified_table_name } AS S ")%>" +
            "<%=j_escape_string(" LEFT JOIN #{ entity.sync.sync_temp_entity.sql.qualified_table_name } AS O ON O.#{ entity.sync.sync_temp_entity.attribute_by_name(:MappingID).sql.quoted_column_name } = S.#{ entity.sync.sync_temp_entity.attribute_by_name(:MappingID).sql.quoted_column_name } AND O.#{ entity.sync.master_entity.attribute_by_name(:MappingSource).sql.quoted_column_name } = S.#{ entity.sync.sync_temp_entity.attribute_by_name(:MappingSource).sql.quoted_column_name } AND O.SyncTempID != S.SyncTempID ")%>" +
            "<%=j_escape_string(" WHERE O.#{ entity.sync.master_entity.attribute_by_name(:MappingID).sql.quoted_column_name } IS NOT NULL AND S.#{ entity.sync.master_entity.attribute_by_name(:MappingSource).sql.quoted_column_name } = ?")%>";
          if ( !verify<%= entity.qualified_name.gsub('.','') %>ViaSql( mappingSourceCode, sql, "MappingID Uniqueness", recorder ) )
          {
  
negative.code:           "SELECT S.* " +
            " FROM " +
            "<%=j_escape_string("   #{ entity.sync.sync_temp_entity.sql.qualified_table_name } AS S ")%>" +
            "<%=j_escape_string("JOIN ( SELECT #{ entity.sync.sync_temp_entity.attribute_by_name(:SyncTempID).sql.quoted_column_name } FROM #{ entity.sync.sync_temp_entity.sql.qualified_table_name } WHERE NOT (#{
    sql = constraint.sql.gsub("\n",' ').gsub('  ',' ')
    entity.attributes.select{|a| !a.primary_key? && a.sql? && a.name.to_s != 'CreatedAt' && a.name.to_s != 'DeletedAt' }.each do |a|
      sql = sql.gsub(/#{Regexp.escape(a.sql.quoted_column_name)}/, entity.sync.sync_temp_entity.attribute_by_name(a.reference? ? "#{a.name}MappingID" : a.name).sql.quoted_column_name )
  