SQL statements coded in an ILE RPG program must be placed in the calculation section.
This requires that a C be placed in position 6. SQL statements can be placed in detail calculations, in total calculations, or in a RPG subroutines. The SQL statements are run based on the logic of the RPG statements.
Both uppercase and lowercase letters are acceptable in SQL statements.
Fixed-form RPG
The keywords EXEC SQL indicate the beginning of an SQL statement. EXEC SQL must occupy positions 8 through 16 of the source statement, preceded by a / in position 7. The SQL statement may start in position 17 and continue through position 80.
The keyword END-EXEC ends the SQL statement. END-EXEC must occupy positions 8 through 16 of the source statement, preceded by a slash (/) in position 7. Positions 17 through 80 must be blank.
An UPDATE statement coded in an ILE RPG program might be coded as follows:
C/EXEC SQL UPDATE DEPARTMENT C+ SET MANAGER = :MGRNUM C+ WHERE DEPTNO = :INTDEP C/END-EXEC
Free-form RPG
Each SQL statement must begin with EXEC SQL and end with a semicolon (;). The EXEC SQL keywords must be on one line. The remaining part of the SQL statement can be on more than one line.
Example: An UPDATE statement coded in free form might be coded in the following way:
EXEC SQL UPDATE DEPARTMENT SET MGRNO = :MGR_NUM WHERE DEPTNO = :INT_DEP;
