CreateQuery bitmap_column_expr_test (children 3)
 Identifier bitmap_column_expr_test
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration t (children 1)
    DataType DateTime
   ColumnDeclaration z (children 1)
    DataType AggregateFunction (children 1)
     ExpressionList (children 2)
      Identifier groupBitmap
      DataType UInt32
 Storage definition (children 3)
  Function MergeTree
  Function toYYYYMMDD (children 1)
   ExpressionList (children 1)
    Identifier t
  Identifier t