xml中select 语句可以表名.<include refid="EventBaseFields"/>吗？

是的，可以使用<include>元素引用其他XML文件或SQL片段，例如：

<select id="selectFields" resultType="Event">
  SELECT
    <include refid="EventBaseFields"/>
    <include refid="EventAdditionalFields"/>
  FROM events
</select>

<sql id="EventBaseFields">
  id, title, start_time, end_time
</sql>

<sql id="EventAdditionalFields">
  location, description
</sql>

在这个例子中，<include>元素引用了两个SQL片段，分别是“EventBaseFields”和“EventAdditionalFields”，它们包含了事件表的基本字段和额外字段。这使得SQL语句更加清晰和易于维护。

相关问题

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.de.debook.mapper.CategoryMapper"> <resultMap id="BaseResultMap" type="com.de.debook.entity.Category"> <id column="id" jdbcType="INTEGER" property="id"/> <result column="name" jdbcType="VARCHAR" property="name"/> </resultMap> <resultMap id="StatisticsResultMap" type="com.de.debook.entity.Statistics"> <result column="name" jdbcType="VARCHAR" property="name"/> <result column="value" jdbcType="VARCHAR" property="value"/> </resultMap> <sql id="Base_Column_List"> id, name </sql> <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap"> select <include refid="Base_Column_List"/> from category where id = #{id,jdbcType=INTEGER} </select> <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer"> delete from category where id = #{id,jdbcType=INTEGER} </delete> <insert id="insert" parameterType="com.de.debook.entity.Category"> insert into category (id, name) values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}) </insert> <insert id="insertSelective" parameterType="com.de.debook.entity.Category"> insert into category <trim prefix="(" suffix=")" suffixOverrides=","> <if test="id != null"> id, </if> <if test="name != null"> name, </if> </trim> <trim prefix="values (" suffix=")" suffixOverrides=","> <if test="id != null"> #{id,jdbcType=INTEGER}, </if> <if test="name != null"> #{name,jdbcType=VARCHAR}, </if> </trim> </insert> <update id="updateByPrimaryKeySelective" parameterType="com.de.debook.entity.Category"> update category <set> <if test="name != null"> name = #{name,jdbcType=VARCHAR}, </if> </set> where id = #{id,jdbcType=INTEGER} </update> <update id="updateByPrimaryKey" parameterType="com.de.debook.entity.Category"> update category set name = #{name,jdbcType=VARCHAR} where id = #{id,jdbcType=INTEGER} </update> <select id="selectAll" resultMap="BaseResultMap"> select <include refid="Base_Column_List"/> from category order by id asc </select> <select id="selectStatistics" resultMap="StatisticsResultMap"> SELECT t1.name as name, COUNT(*) as value FROM category t1, debook t2 WHERE t1.id = t2.category_id GROUP BY t1.id order by t1.id asc </select> </mapper>

这是一个 MyBatis 的 Mapper 文件，用于映射实体类 Category 到数据库表 category。其中包括了一些 SQL 语句，如 selectByPrimaryKey、deleteByPrimaryKey、insert、updateByPrimaryKeySelective 等，用于对数据表进行增删改查操作。还定义了两个结果映射 resultMap，用于将查询结果映射到实体类或自定义的统计类 Statistics 中。最后还定义了两个 select 语句，用于查询所有分类和分类的统计信息。

<select id="findList" resultType="ZdrgkBkyj" > SELECT <include refid="zdrgkBkyjColumns"/> FROM zdrgk_zdrgj a left join zdryk_bkgl b on a.zdrgj_xm = b.bkgl_zdrxm and b.del_flag = #{DEL_FLAG_NORMAL} <where> a.del_flag = #{DEL_FLAG_NORMAL} ${dataScope} <if test="zdrgjXm != null and zdrgjXm != ''"> AND a.zdrgj_xm = #{zdrgjXm} </if> <if test="zdrgjSfzhm != null and zdrgjSfzhm != ''"> AND a.zdrgj_sfzhm = #{zdrgjSfzhm} </if> <if test="zdrgjXsd != null and zdrgjXsd != ''"> AND a.zdrgj_xsd = #{zdrgjXsd} </if> <if test="bkglZdrxm != null and bkglZdrxm != ''"> AND b.bkgl_zdrxm = #{bkglZdrxm} </if> </where> <choose> <when test="page !=null and page.orderBy != null and page.orderBy != ''"> ORDER BY ${page.orderBy} </when> <otherwise> ORDER BY a.update_date DESC </otherwise> </choose> </select>为zdrgkbkyj的xml文件 bkglZdrxm只作为查询没有显示在列表数据中如何在jeeplus中 queryParams : function(params) { var searchParam = $("#searchForm").serializeJSON(); searchParam.zdrgjXm = $("#zdrgjXm").val(); searchParam.bkglZdrxm = $("#bkglZdrxm").val(); if (searchParam.zdrgjXm && searchParam.bkglZdrxm && searchParam.zdrgjXm === searchParam.bkglZdrxm) { searchParam.matchedValue = searchParam.zdrgjXm; } else { searchParam.matchedValue = null; } searchParam.pageNo = params.limit === undefined? "1" :params.offset/params.limit+1; searchParam.pageSize = params.limit === undefined? -1 : params.limit; if(params.sort && params.order){ searchParam.orderBy = params.sort+ " "+ params.order; } return searchParam; }中添加一个查询条件 当前的zdrgjXm字段要和bkglZdrxm字段有一样的值才能显示

你想要在Jeeplus中添加一个查询条件，使得只有当zdrgjXm字段与bkglZdrxm字段具有相同的值时，该记录才能被显示。那么你可以在queryParams函数中添加以下代码：

if (searchParam.zdrgjXm && searchParam.bkglZdrxm && searchParam.zdrgjXm === searchParam.bkglZdrxm) {
    searchParam.matchedValue = searchParam.zdrgjXm;
} else {
    searchParam.matchedValue = null;
}

这段代码会判断zdrgjXm和bkglZdrxm是否都有值，如果都有值且相同，则将matchedValue设为zdrgjXm的值，否则将matchedValue设为null。接着你可以在你的SQL语句中使用matchedValue来作为查询条件，例如：

<if test="matchedValue != null">
    AND (a.zdrgj_xm = #{matchedValue} OR b.bkgl_zdrxm = #{matchedValue})
</if>

这段代码将检查是否存在matchedValue，如果有，则将其作为查询条件，匹配a表中的zdrgj_xm或b表中的bkgl_zdrxm。这样一来，只有当zdrgjXm和bkglZdrxm的值相同时，才能匹配到该记录。