Answer / yuvaevergreen

>>Cursors are memory structures used to handle multiple
rows at a time.
>>Though,select statement can fetch only multiple rows, we
cannot handle multiple rows using host variables.
Basic difference would be single row handling and multiple
rows handling.

Answer / reddy

cursors are used to retrieve multiple rows . Cussors will
retrieve one row at a time and save the data in the
hostvariables.For retreiving the 2 nd row, we need to
repeat the loop.the same process is continued at the end of
data.

select stmt will retrieve multiple rows at a time. assume
that there are 10 rows in a table.
EX: EXEC SQL
SELECT empno , ename into :hvempno ,:hvename from emp;
END EXEC;

Here the above sql query reults all the 10 rows. But , the
host variables will hold only one row of data.the remaining
9 rows will not be stored any where.

hope this may help u

Hi All, In a Cobol-DB2 program, I am fetching rows from 4 tables using cursor and then based on the a field present in that table, It processes the information accordingly..for example stat-c is one digit field..if stat-c is 'D' then the a row is deleted from table and written those details in to a file. If the stat-c is 'U' then a row is updated (hardcoded what to update)in a table and written those details in to a file. If the stat-c is 'I' then a row is inserted in a table and written those details in to two files. The issue is i have to include the intermediate commits. When an abend occurs, due to commit statement db2 tables will be saved, But there will be lose of file contents. When we resubmitting the job associated with this program there will be insert ,update and delete anomolies to avoid that what measures could be taken?. The intermediate commit is nothing but issuing commit after massive inserts, updates and deletes(sum of 500actions)

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