[jeeplus] 使用笔记 (gridSelect、datetimepicker etc.)

刘亦菲

怎么让主附表中的附表也打开横向滚动条？

用 CSS 样式控制显示出来吗？尝试一下

    <style>
        .tab-content{
            overflow-x: scroll;
            width: 3000px;
        }
    </style>
​

添加该样式后显示不正确。
暂且在 list.jsp 中添加：

    <style>
        .tabs-container .tab-content > .active,
        .tabs-container .pill-content > .active {
            display: block;
            overflow-x: auto;
            width: 3000px;
        }
    </style>
​

Mysql 中对一个表中的字段进行汇总计算后 赋值给 其中一个字段

如：招生计划表中，按照年份、省份、批次、文理科、学校 分组汇总后，将各专业招生计划数汇总后，赋值给该校该年度该批次该省份该文理科中的 招生计划总数。

查询语句：

SELECT
	COUNT(zhaoshengjihua) AS jihuazongshu,
	zhaoshengjihuazongshu,
	shengfen,
	nianfen,
	wenlike,
	pici,
	daxuedaima,
	daxuemingcheng
FROM
	d_zhaoshengjihuabiao
GROUP BY
	shengfen,
	nianfen,
	wenlike,
	pici,
	daxuedaima;

​

*zhaoshengjihuazongshu 字段中已经被赋值了，原来该字段中的值为空

最开始写出的 sql 如下，但是完全不正确。

UPDATE d_zhaoshengjihuabiao a
SET a.zhaoshengjihuazongshu = (
	SELECT
		COUNT(b.zhaoshengjihua) AS b.cou,
		b.shengfen,
		b.nianfen,
		b.wenlike,
		b.pici,
		b.daxuedaima
	FROM
		d_zhaoshengjihuabiao b
	GROUP BY
		b.shengfen,
		b.nianfen,
		b.wenlike,
		b.pici,
		b.daxuedaima
)
WHERE
	b.shengfen = a.shengfen
AND b.nianfen = a.nianfen
AND b.wenlike = a.wenlike
AND b.pici = a.pici
AND b.daxuedaima = a.daxuedaima
​

在网上搜索后，看到如下 2 条 sql 做为参考：

-- 1
UPDATE au_window_re_project aw
SET aw.project_name = (
	SELECT
		ap.SERVICENAME
	FROM
		apas_service ap
	WHERE
		ap.unid = aw.PROJECT_ID
)

-- 2
UPDATE test_user_points AS a
LEFT JOIN (
	SELECT
		user_id,
		sum(point) AS point_count
	FROM
		test_point_log
	GROUP BY
		user_id
) AS b ON a.user_id = b.user_id
SET a.point_count = b.point_count
​

最终参考第 2 条 SQL 写出如下语句，可以实现要求：

UPDATE d_zhaoshengjihuabiao AS a
LEFT JOIN (
	SELECT
		COUNT(zhaoshengjihua) AS cou,
		shengfen,
		nianfen,
		wenlike,
		pici,
		daxuedaima
	FROM
		d_zhaoshengjihuabiao
	GROUP BY
		shengfen,
		nianfen,
		wenlike,
		pici,
		daxuedaima
) AS b ON (
	a.shengfen = b.shengfen
	AND a.wenlike = b.wenlike
	AND a.nianfen = b.nianfen
	AND a.pici = b.pici
	AND a.daxuedaima = b.daxuedaima
)
SET a.zhaoshengjihuazongshu = b.cou ;
​

SSM 中 MyBatis 的某个 xxxMapper.xml 中，是否可以这样写？

            <if test="planMajorName != null and  planMajorName != '' and r1 = '0'">
                AND a.planmajorname = #{planMajorName}
            </if>
            <if test="planMajorName != null and  planMajorName != '' and (r1 = null or r1 = '')">
                AND a.planmajorname LIKE
                <if test="dbName == 'oracle'">'%'||#{planMajorName}||'%'</if>
                <if test="dbName == 'mssql'">'%'+#{planMajorName}+'%'</if>
                <if test="dbName == 'mysql'">concat('%',#{planMajorName},'%')</if>
            </if>
​