Insert elements into SET and MULTISET collections

For SET and MULTISET collections, the position of the new element is undefined, because the elements of these collections do not have ordered positions. Suppose the table readings has the following declaration:

CREATE TABLE readings
(
   dataset_id         INT8,
   time_dataset MULTISET(INT8 NOT NULL)
);

To access the time_dataset column, the typed Informix® ESQL/C host variable time_vals has the following declaration:

EXEC SQL BEGIN DECLARE SECTION;
   client collection multiset(int8 not null) time_vals;
   ifx_int8_t an_int8;
EXEC SQL END DECLARE SECTION;

The following INSERT statement adds a new MULTISET element of 1,423,231 to time_vals:

EXEC SQL allocate collection :time_vals;
EXEC SQL select time_dataset into :time_vals 
   from readings
   where dataset_id = 1356;
ifx_int8cvint(1423231, &an_int8);
EXEC SQL insert into table(:time_vals) values (:an_int8);