CreateQuery union2 (children 3)
 Identifier union2
 Columns definition (children 1)
  ExpressionList (children 5)
   ColumnDeclaration date (children 1)
    DataType Date
   ColumnDeclaration a (children 1)
    DataType Int32
   ColumnDeclaration b (children 1)
    DataType Int32
   ColumnDeclaration c (children 1)
    DataType Int32
   ColumnDeclaration d (children 1)
    DataType Int32
 Storage definition (children 1)
  Function Distributed (children 1)
   ExpressionList (children 3)
    Identifier test_shard_localhost
    Function currentDatabase (children 1)
     ExpressionList
    Literal \'union1\'