Re: SQLRPG/400 Day of Week

["Simon Coulter" <shc@xxxxxxxxxxxxxxxxx>]

Hello Al,

It would help if the parentheses balanced correctly and valid SQL functions 
were used (e.g., SUBSTR rather than SUBST).  Here is your first example in 
syntactically correct fashion.

      C/EXEC SQL                                                           
      C+ SET :WKDAY = DAYOFWEEK( DATE( SUBSTR( DIGITS( :TODAY ), 5, 4)      
      C+                                                    || '-' ||
      C+                               SUBSTR( DIGITS( :TODAY ), 1, 2)      
      C+                                                    || '-' ||
      C+                               SUBSTR( DIGITS( :TODAY ), 3, 2)))    
      C/END-EXEC                                                           

However, DIGITS returns a string including leading zeroes (as documented in 
the FM) which stuffs up the DATE function, so to make this work I had to 
modify it to the following:

      C/EXEC SQL                                                           
      C+ SET :WKDAY = DAYOFWEEK( DATE( SUBSTR( DIGITS( :TODAY ), 7, 4)      
      C+                                                   || '-' ||
      C+                               SUBSTR( DIGITS( :TODAY ), 3, 2)      
      C+                                                   || '-' ||
      C+                               SUBSTR( DIGITS( :TODAY ), 5, 2)))    
      C/END-EXEC                                                           

Of course I needed to let RPG default the date format to that weird American 
way of doing things :)

However, although that basic syntax worked in ISQL, it failed in an SQLRPG 
program due to not being able to find QSQPTABL in QSYS2 so either I'm missing 
some database PTFs or there's an optionally installable component I haven't 
installed.  That's going on the list for later investigation.

Regards,
Simon Coulter.

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