Allocation of Strings in bindValues

Bind a string value to a SQL query and execute this via ODBC.

SQL:
SELECT * FROM T_Strassenverzeichnis WHERE ST_Strasse LIKE :name

C++:
query.bindValue(":name", "A%");

Expected to see:
The query should return all street beginning with A.

Got instead:
Nothing. The query would executed but the bind value is invalid. Only strange characters are bound to the bind value.