CreateQuery test (children 3)
 Identifier test
 Columns definition (children 2)
  ExpressionList (children 2)
   ColumnDeclaration dim1 (children 1)
    DataType String
   ColumnDeclaration dim2 (children 1)
    DataType String
  ExpressionList (children 1)
   Projection (children 1)
    ProjectionSelectQuery (children 2)
     ExpressionList (children 3)
      Identifier dim1
      Identifier dim2
      Function count (children 1)
       ExpressionList
     ExpressionList (children 2)
      Identifier dim1
      Identifier dim2
 Storage definition (children 2)
  Function MergeTree
  Identifier dim1
