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Posted by: Bob Cozzi
Rogue Programmer
Cozzi Productions, Inc.
SQL iQuery Documentation - UDF and UDTF
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Published: 14 Jun 2019
Revised: 20 Jun 2019 - 487 days ago
Last viewed on: 18 Oct 2020 (198 views) 
  1. SQL iQuery - RUNiQRY CL Command
  2. CSV() - Read and Parse Comma Separated Values File
  3. CSV_VAL() Extract CSV Column Value
  4. CSV_XXXX() Extract CSV Column Value as xxxx
  5. CSV_COUNT - Retrieve Field Count
  6. ObjExist - Check Object Exits
  7. DTAARA - Data Area
  8. encode_URL Encode URL for the Web
  9. encode_TAG Encode HTML TAG Content
  10. FLDLIST - List the Fields of a Table
  11. FROMHEX - Fold 2-hex Chars into 1 Char
  13. MD5_HASH - UDF - Return MD5 Hash
  14. ifsStat - Get IFS File Attributes
  15. ifsExists - Check if IFS File Exists
  16. ifsFile - Query Contents of IFS Text File
  17. ifsDIR - List IFS Directory Entires
  18. DEPFILE - List Dependent Database Relations
  19. JOB - Get Job Name Component
  20. Job_ATTR - Job Attributes
  21. JOB_DATE Retrieve the Job Date
  22. JOBLOG - Write Message to Joblog
  23. Library List UDF and Procedures
  24. MBRLIST - Member List
  25. MCHINFO Machine Type and Model Number and OS version
  26. OSVER and OSVRM Get IBM i Version/Release
  27. PrintPDF - Print a PDF to a PDF Compatible Printer
  28. CPYTOPDF - Copy SPOOLED File to PDF file
  29. OBJ_LIST List Object in a Library
  30. LIB_LIST List Descriptions of Libraries on the Library List
  31. OBJ_EXPORTS List Exported Items from an Object
  32. OBJ_STRUCT Retrieve Objects Components
  33. RTVCMDD Retrieve Command Definition
  34. RTVJOBA - Retrieve Job Attributes
  35. RTVJOBD - Retrieve Job Description
  36. RTVLASTSPLF - Retrieve ID of Last SPOOLED File for this Job
  37. RTVxxx - Retrieve Various Objects Description Table Functions
  38. WATCHLIST - List Current Watches
  39. Polymorphic Qualified Name Syntax

Using IBM i? Need to create Excel, CSV, HTML, JSON, PDF, SPOOL reports? Learn more about the fastest and least expensive tool for the job: SQL iQuery.

iQuery.FromHex() - UDF Published by: Bob Cozzi on 14 Jun 2019 view comments

Convert 2-Byte Hexadecimal to 1-Byte Charcter

The iQuery.fromHex() UDF inspects converts each pair of input characters (which must represent a hexadecimal value) into a single character/byte. Therefore a 16-byte input value is converted into an 8-byte result.

This is the complement function to the built-in SQL HEX() UDF which "unfolds" one byte into two hex bytes.

UDF Return Type Description
fromHex varchar(4096) Convert input from hexadecimal to character.


iQuery.fromHex( input string varchar(8192) )

The input-string parameter can be any textual data that contains hexadecimal pairs (2 characters of 0-1 or A-F) that are folded into a single character and then returned.


values hex('12345XYZ') into :output;
-- OUTPUT now contains: F1F2F3F4F5E7E8E9

values iQuery.fromHex(:output) into :data;
-- DATA now contains '12345XYZ'

values iQuery.fromHex(hex('12345XYZ'));
-- The output from this SQL stmt is: 12345XYZ

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