CreateQuery dictionary_nullable_source_table (children 3)
 Identifier dictionary_nullable_source_table
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id (children 1)
    DataType UInt64
   ColumnDeclaration value (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType Int64
 Storage definition (children 1)
  Function TinyLog
