bvstone

Converting a MMDDYY date format to YYMMDD for Sorting Using SQL

Posted:

Converting a MMDDYY date format to YYMMDD for Sorting Using SQL

I recently ran across a customers application that was listing items by a date, but for some reason the items were not in date order.

I looked into the file and the dates were stored as numeric, 6,0 as MMDDYY.  Not very handy for sorting.

In order to update the application I removed the RLA using READE and replaced it with SQL.  The SQL looked like the following:

SELECT                                            
  case                                                                  
  when DATE >= 100000                                                  
  then                                                                  
    (substr(DATE,5,2) || substr(DATE,1,2) || substr(DATE,3,2))         
  else                                                                  
   (substr(DATE,4,2) || '0' || substr(DATE,1,1) || substr(DATE,2,2))  
  end                                                                   
  as NEWDATE
FROM FILE

The case statement was needed because dates prior to October 1st are only 5 digits.

When this is done you have the NEWDATE field that you can use for sorting so that the data will be in the order intended.

Yes, this was an older V5R4 system.  Neither Y2K compliant or dates stored properly, but is that really very surprising?  :)




Latest Posts:

BVSTools Software Verified on V7R5 and Power10 BVSTools Software Verified on V7R5 and Power10
Posted by December 9, 2022
BVSTools >> BVSTools Announcements
Microsoft Office 365 Servers and Random Errors Issue Microsoft Office 365 Servers and Random Errors Issue
Posted by November 14, 2022
BVSTools >> BVSTools Software Discussion >> Email Tools (MAILTOOL) Specific Discussion
Sending/Resending Emails Using a MIME File with MAILTOOL Sending/Resending Emails Using a MIME File with MAILTOOL
Posted by November 8, 2022
BVSTools >> BVSTools Software Discussion >> Email Tools (MAILTOOL) Specific Discussion
Sending an HTML Email on Your IBM i Using MAILTOOL Sending an HTML Email on Your IBM i Using MAILTOOL
Posted by November 1, 2022
BVSTools >> BVSTools Software Discussion >> Email Tools (MAILTOOL) Specific Discussion
Transferring License Keys from One System to Another Transferring License Keys from One System to Another
Posted by October 31, 2022
BVSTools >> BVSTools Software Discussion
Calculating the Size of a File Before Base64 Encoding Calculating the Size of a File Before Base64 Encoding
Posted by August 13, 2022
Programming >> RPG Programming
GreenTools for Microsoft Apps (G4MS) v9.12 Now Includes Function to Send Emails using MIME File GreenTools for Microsoft Apps (G4MS) v9.12 Now Includes Function to Send Emails using MIME File
Posted by August 11, 2022
BVSTools >> BVSTools Announcements >> GreenTools for Microsoft Apps (G4MS) Specific Announcements
GreenTools for Google Apps (G4G) v15.20 Now Supports Shortcuts GreenTools for Google Apps (G4G) v15.20 Now Supports Shortcuts
Posted by August 6, 2022
BVSTools >> BVSTools Announcements >> GreenTools for G Suite (Google Apps) (G4G) Specific Announcements
GreenTools for Microsoft Apps (G4MS) Groups Admin Authority Instructions GreenTools for Microsoft Apps (G4MS) Groups Admin Authority Instructions
Posted by July 26, 2022
BVSTools >> BVSTools Software Discussion >> GreenTools for Microsoft Apps (G4MS) Specific Discussion
GreenTools for Microsoft Apps (G4MS) v9.10 Now Includes OneDrive Functions that Work With Groups/Shared Drives GreenTools for Microsoft Apps (G4MS) v9.10 Now Includes OneDrive Functions that Work With Groups/Shared Drives
Posted by July 19, 2022
BVSTools >> BVSTools Announcements >> GreenTools for Microsoft Apps (G4MS) Specific Announcements
GreenTools for Google Apps (G4G) v15.10 Now Includes Drive Functions that Work With Shared Drives GreenTools for Google Apps (G4G) v15.10 Now Includes Drive Functions that Work With Shared Drives
Posted by July 15, 2022
BVSTools >> BVSTools Announcements >> GreenTools for G Suite (Google Apps) (G4G) Specific Announcements
GreenTools for Microsoft Apps (G4MS) v9.00 Now Offers Functions to Bypass Registration Command and BVSTools Landing Page GreenTools for Microsoft Apps (G4MS) v9.00 Now Offers Functions to Bypass Registration Command and BVSTools Landing Page
Posted by July 4, 2022
BVSTools >> BVSTools Announcements >> GreenTools for Microsoft Apps (G4MS) Specific Announcements
What Objects Should I Omit from Replication to Ensure My License Keys Work on my HA/DR System? What Objects Should I Omit from Replication to Ensure My License Keys Work on my HA/DR System?
Posted by June 27, 2022
BVSTools >> BVSTools Software Discussion
GreenTools for Google Apps (G4G) v15.00 Now Offers Functions to Bypass Registration Command and BVSTools Landing Page GreenTools for Google Apps (G4G) v15.00 Now Offers Functions to Bypass Registration Command and BVSTools Landing Page
Posted by May 3, 2022
BVSTools >> BVSTools Announcements >> GreenTools for G Suite (Google Apps) (G4G) Specific Announcements
How Do I Switch From MAILTOOL Plus to GreenTools for Google (OAuth 2.0) or Microsoft Office 365? How Do I Switch From MAILTOOL Plus to GreenTools for Google (OAuth 2.0) or Microsoft Office 365?
Posted by April 18, 2022
BVSTools >> BVSTools Software Discussion >> Email Tools (MAILTOOL) Specific Discussion

Reply




Copyright 1983-2020 BVSTools
GreenBoard(v3) Powered by the eRPG SDK, MAILTOOL Plus!, GreenTools for Google Apps, jQuery, jQuery UI, BlockUI, CKEditor and running on the IBM i (AKA AS/400, iSeries, System i).