docs: 删除doc目录下已废弃的SQL文件

yuan

3 天以前 600a8ae0735a911b2d9feb75cceb2dc21f1e2dbf

 src/main/java/com/ruoyi/framework/web/domain/R.java

@@ -102,4 +102,14 @@
    {
        this.data = data;
    }

    public static <T> Boolean isError(R<T> ret)
    {
        return !isSuccess(ret);
    }

    public static <T> Boolean isSuccess(R<T> ret)
    {
        return R.SUCCESS == ret.getCode();
    }
}