CreateQuery 01686_test (children 3)
 Identifier 01686_test
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration key (children 1)
    DataType UInt64
   ColumnDeclaration value (children 1)
    DataType String
 Storage definition (children 3)
  Function EmbeddedRocksDB
  Identifier key
  Set