SQL database - querying with foreign characters and saving blob data

WestCoast_BC
WestCoast_BC used Ask the Experts™
on
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.
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lcohanDatabase Analyst

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

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

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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

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Author

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

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I have solved my problem by binding the parameters and now everything works fine

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