The following programs demonstrate the use of the LE (less than or equal to) operator in a FOR statement. The programs create a record stream of all those employees who have an employee ID less than or equal to 00400. The programs then print the employee IDs from the records in the record stream.
1 – C Example
#include <stdio.h> DATABASE PERS = FILENAME "PERSONNEL"; main() { READY PERS; START_TRANSACTION READ_WRITE; FOR E IN EMPLOYEES WITH E.EMPLOYEE_ID LE "00400" printf ("%s\n", E.EMPLOYEE_ID); END_FOR; COMMIT; FINISH; }
2 – Pascal Example
program relation (input,output); DATABASE PERS = FILENAME 'PERSONNEL'; begin READY PERS; START_TRANSACTION READ_ONLY; FOR E IN EMPLOYEES WITH E.EMPLOYEE_ID LE '00400' writeln (E.EMPLOYEE_ID); END_FOR; COMMIT; FINISH; end.