We help IT Professionals succeed at work.

SQL database - querying with foreign characters and saving blob data

WestCoast_BC
WestCoast_BC asked
on
98 Views
Last Modified: 2018-11-01
I have a C++ application that connects to a Firebird SQL database. The database is using UTF8 as its character set.

The database contains tables that have strings that are of type varchar and contains blob data that is of type 'blob sub_type 1'

Originally the connection to the database did not specify the character set but this was causing a Malormed String SQL error when I tried to do a query that contained a foreign character like É. I added CHARSET=UTF8 to the connection string which solved my initial problem when querying with a foreign character but now I get an SQL error when I try to save blob data.

Does anyone have any suggestions of what I should do. Any help is appreciated.
Comment
Watch Question

lcohanDatabase Analyst
CERTIFIED EXPERT

Commented:
What is the actual error you are getting - could you please post it here explicitly (well scramble any sensitive info if exists)?
Also, how's the "blob" defined at the database column level? I mean is it binary BLOB or some BLOB SUB_TYPE TEXT?

Author

Commented:
I have a simpler example that is causing the same error. I have a table with a column called Details which is defined as:
DETAILS varchar(261) COLLATE UNICODE

Open in new window

If I try to do the following query:
SELECT a.DETAILS
FROM MODHISTORY a 
WHERE
    a.DETAILS LIKE '%Â%'

Open in new window

I get the error:
Error: *** IBPP::SQLException ***
Context: Statement::Prepare( SELECT a.DETAILS
FROM MODHISTORY a 
WHERE
    a.DETAILS LIKE '%Â%'
 )
Message: isc_dsql_prepare failed

SQL Message : -104
Invalid token

Engine Code    : 335544849
Engine Message :
Malformed string

Open in new window

Author

Commented:
I am hoping someone might have a suggestion for me regarding how to solve this.
CERTIFIED EXPERT

Commented:
>> Also, how's the "blob" defined at the database column level? I mean is it binary BLOB or some BLOB SUB_TYPE TEXT?

Maybe your answer to this question will help.

Author

Commented:
The blob is defined as:
DATA blob sub_type 1 CHARACTER SET ASCII,

Open in new window

This one is on us!
(Get your first solution completely free - no credit card required)
UNLOCK SOLUTION
Unlock the solution to this question.
Join our community and discover your potential

Experts Exchange is the only place where you can interact directly with leading experts in the technology field. Become a member today and access the collective knowledge of thousands of technology experts.

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.