public static List<Element> generateUpsertKeys(List<IntrospectedColumn> columns, String prefix) {
        return generateCommColumns(columns, prefix, true, 1, true);
    }
public static List<Element> generateUpsertKeys(List<IntrospectedColumn> columns, String prefix) {
        return generateCommColumns(columns, prefix, true, 1, true);
    }
public static List < Element > generateUpsertKeys ( List < IntrospectedColumn > columns , String prefix ) { return generateCommColumns ( columns , prefix , true , 1 , true ) ; }
生成keys Ele (upsert)
@param columns
@param prefix
@return
生成keys Ele ( upsert )