Convert HEX value to CHAR on DB2

Question

In connection with data replication from SQL Server to DB2 I have the following question:

On DB2 I have a table containing (fo

Answer 1

This is one of most close topics to subject of my problem:

I have lost 2 days to figure out how to migrate XML files stored in DB2 BLOB field using SQL Developer. (Yes, migrating to and doing the queries from SQL Developer - we are migrating data to Oracle from DB2, so we were using this tool)!

How to show XML file/string stored in BLOB?

Let's start with, what the problem was:

1. Data in BLOB was a XML file.

2. When selected in query, got:

3. When casted, like:

select CAST(BLOBCOLUMN as VARCHAR(1000)) from TABLE where id = 100;

output was in HEX:

1. Nothing worked... Not even the solution from the links in this topic. !NOTHING!

By mistake found a solution:

1. CREATE FUNCTION in DB2:

   CREATE FUNCTION unhex(in VARCHAR(32000) FOR BIT DATA) RETURNS VARCHAR(32000) LANGUAGE SQL CONTAINS SQL DETERMINISTIC NO EXTERNAL ACTION BEGIN ATOMIC RETURN in; END

2. Run SELECT:

   select UNHEX( CAST(BLOBCOLUMN as VARCHAR(32000) FOR BIT DATA)) from TABLE where id = 100;

3. Result: