In general, Embedded SQL statements in Fortran require no special margins. The exec keyword can begin anywhere on the source line as long as it is preceded only by blank space. Host declarations can also begin on any column. In the case, however, of an Embedded SQL statement continuation, the continuation indicator must follow the rules for line continuation. For more information, see Line Continuation in this chapter. For more information on tab format for source input, see Preprocessor Operation in this chapter.

For portability to other implementations of SQL, you should code your SQL statements between columns 7 and 72.