CreateQuery matview_b_to_c (children 3)
 Identifier matview_b_to_c
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 1)
     Function SUM (alias a) (children 1)
      ExpressionList (children 1)
       Function plus (children 1)
        ExpressionList (children 2)
         Identifier a
         Function sleepEachRow (children 1)
          ExpressionList (children 1)
           Literal Float64_0.000002
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier table_b
 ViewTargets
