Insertion double quote into string/qstring

[MarkoSan]

Hello, I have this code:

// query string;
    QString queryString("SELECT * FROM merchandize WHERE PicPath="%1";");
    queryString.arg(strPicPath);

// query string;
    QString queryString("SELECT * FROM merchandize WHERE PicPath="%1";");
    queryString.arg(strPicPath);

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Once I try to compile it, I get following error:

CMerchandizeBrowser.cpp: In member function `QString CMerchandizeBrowser::getMerchandizeName(QString)':
CMerchandizeBrowser.cpp:330: error: invalid operands of types `const char[41]' and `int' to binary `operator%'

CMerchandizeBrowser.cpp: In member function `QString CMerchandizeBrowser::getMerchandizeName(QString)':
CMerchandizeBrowser.cpp:330: error: invalid operands of types `const char[41]' and `int' to binary `operator%'

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I need those quotes because SQL syntax. Please help!