@Override
    public void setValue(PreparedStatement st, int startIndex, Boolean value) throws SQLException {
        st.setString(startIndex, value ? "T" : "F");

    }
{@code TrueFalseType} maps Boolean to 'T'/'F' on the JDBC level

@author tiwe
querydsl-sql/src/main/java/com/querydsl/sql/types/TrueFalseType.java