text: --- collection
  prepare st from 'select round(?,?)';
  execute st using {12.2},1;
  
  create table t1 (s1 set(double));
  
  insert into t1 values ({1.12312e1});
  select round(s1,1) from t1;
  
  drop table t1;
  
  select round({12.2},1);
  