Ⅰ mybatis的怎么在select标签里引用where标签
[html] view plain
<sql id="query_user_where">
<!-- 如果 userQueryVo中传入查询条件，再进行sql拼接-->
<!-- test中userCustom.username表示从userQueryVo读取属性值-->
<if test="userCustom!=null">
<if test="userCustom.username!=null and userCustom.username!=''">
and username like '%${userCustom.username}%'
</if>
<if test="userCustom.sex!=null and userCustom.sex!=''">
and sex = #{userCustom.sex}
</if>
<!-- 根据id集合查询用户信息 -->
<!-- 最终拼接的效果：
SELECT id ,username ,birthday FROM USER WHERE username LIKE '%小明%' AND id IN (16,22,25)
collection：集合的属性
open：开始循环拼接的串
close：结束循环拼接的串
item：每次循环取到的对象
separator：每两次循环中间拼接的串
-->
<foreach collection="ids" open=" AND id IN ( " close=")" item="id" separator=",">
#{id}
</foreach>
<!--
SELECT id ,username ,birthday FROM USER WHERE username LIKE '%小明%' AND (id = 16 OR id = 22 OR id = 25)
<foreach collection="ids" open=" AND ( " close=")" item="id" separator="OR">
id = #{id}
</foreach>
-->
<!-- 还有很的查询条件 -->
</if>
</sql>
[html] view plain
</span><select id="findUserList" parameterType="userQueryVo" resultType="user">
select id,username,birthday from user
<!-- where标签相当 于where关键字，可以自动去除第一个and -->
<where>
<!-- 引用sql片段，如果sql片段和引用处不在同一个mapper必须前边加namespace -->
<include refid="query_user_where"></include>
<!-- 下边还有很其它的条件 -->
<!-- <include refid="其它的sql片段"></include> -->
</where>
</select>
Ⅱ mybatis sql属性用sql标签封装出问题了 应该怎么改
username=#{1},password=#{2} where id=#{0}这些代码写的有问题，应该是对应的UserInfo里面的属性名，如useName，password,id等。
Ⅲ mybatis怎么展示sql语句
mybatis的sql和你在数据库客户端执行的sql是一样的，但是在mybatis中调用的sql一般都是动态的，所以用到了参数传递。这个mybatis有对应的标签以及相应的变量来实现。你可以搜索下mybatis标签。同时给你一个参考的你看看，这个是一个查询用户的
<select id="queryUsers" parameterType="map" resultType="xx.xx.xx.bean.UserBean">
<![CDATA[
select
ID,
LOGIN_NAME AS loginName,
PASSWORD,
REAL_NAME AS realName,
POSITION,
(SELECT D.POSITION_NAME FROM UNIT_POSITION D WHERE D.POSITION_CODE=T.POSITION) POSITIONNAME,
USER_TYPE AS userType,
SEX,
PID,
TO_CHAR(T.BIRTHDAY,'YYYY-MM-DD') BIRTHDAY,
EMAIL,
CONTACT_TEL AS contactTel,
CONTACT_MOBILE AS contactMobile,
CONTACT_FAX AS contactFax,
CONTACT_ZIP AS contactZip,
CONTACT_ADDR AS contactAddr,
STATUS,
EDUCATION,
(SELECT D.EDUCATION_NAME FROM UNIT_EDUCATION D WHERE D.EDUCATION_CODE=T.EDUCATION AND D.STATUS=0) EDUCATIONNAME,
NATION,
POLITICAL,
REMARK,
TO_CHAR(T.CREATE_DATE,'YYYY-MM-DD HH24:MI:SS') createDate,
(SELECT D.REAL_NAME FROM UNIT_USER D WHERE D.ID= T.CREATE_USER_ID) createUserId,
TO_CHAR(T.UPDATE_DATE,'YYYY-MM-DD HH24:MI:SS') updateDate,
(SELECT D.REAL_NAME FROM UNIT_USER D WHERE D.ID= T.UPDATE_USER_ID) updateUserId
from UNIT_USER T
]]>
<where>
T.STATUS='1'
<if test="realName !=null and realName !=''">
and T.REAL_NAME like '%${realName}%'
</if>
<if test="nexusDpartment !=null">
AND T.ID IN (SELECT DISTINCT D.USER_ID FROM UNIT_USER_DEPT D WHERE D.DEPT_CODE IN (${nexusDpartment}))
</if>
<if test="deptCode !=null and deptCode !=''">
AND T.ID IN (SELECT DISTINCT D.USER_ID FROM UNIT_USER_DEPT D WHERE D.DEPT_CODE = #{deptCode})
</if>
</where>
<if test="sort != null and sort != ''">
order by ${sort}
<if test="direction != null and direction != ''">
${direction}
</if>
</if>
</select>
Ⅳ mybatis的sql标签 怎么写 like
selectafromtablewhereb=1andclikeconcat('%',d,'%');
Ⅳ mybatis框架配置文件里执行sql语句常用的标签有哪些，以及动态语录怎么拼接
select indert update delete
where 1=1
<if test='...条件...‘>
and ...
</if>
Ⅵ mybatis映射文件中，以下哪个标签是引入其他自定义sql片段的标签
</sql>
<select id="find" resultType="*" resultMap="*">
<include refid="select"/>
</select>
Ⅶ mybatis标签问题疑惑，什么是sql dialect
mybatis的sql和你在数据库客户端执行的sql是一样的，但是在mybatis中调用的sql一般都是动态的，所以用到了参数传递。这个mybatis有对应的标签以及相应的变量来实现。你可以搜索下mybatis标签。同时给你一个参考的你看看，这个是一个查询用户的
041424344454647484950<select id="queryUsers" parameterType="map" resultType="xx.xx.xx.bean.UserBean"> <![CDATA[ select ID, LOGIN_NAME AS loginName, PASSWORD, REAL_NAME AS realName, POSITION, (SELECT D.POSITION_NAME FROM UNIT_POSITION D WHERE D.POSITION_CODE=T.POSITION) POSITIONNAME, USER_TYPE AS userType, SEX, PID, TO_CHAR(T.BIRTHDAY,'YYYY-MM-DD') BIRTHDAY, EMAIL, CONTACT_TEL AS contactTel, CONTACT_MOBILE AS contactMobile, CONTACT_FAX AS contactFax, CONTACT_ZIP AS contactZip, CONTACT_ADDR AS contactAddr, STATUS, EDUCATION, (SELECT D.EDUCATION_NAME FROM UNIT_EDUCATION D WHERE D.EDUCATION_CODE=T.EDUCATION AND D.STATUS=0) EDUCATIONNAME, NATION, POLITICAL, REMARK, TO_CHAR(T.CREATE_DATE,'YYYY-MM-DD HH24:MI:SS') createDate, (SELECT D.REAL_NAME FROM UNIT_USER D WHERE D.ID= T.CREATE_USER_ID) createUserId, TO_CHAR(T.UPDATE_DATE,'YYYY-MM-DD HH24:MI:SS') updateDate, (SELECT D.REAL_NAME FROM UNIT_USER D WHERE D.ID= T.UPDATE_USER_ID) updateUserId from UNIT_USER T ]]> <where> T.STATUS='1' <if test="realName !=null and realName !=''"> and T.REAL_NAME like '%${realName}%' </if> <if test="nexusDpartment !=null"> AND T.ID IN (SELECT DISTINCT D.USER_ID FROM UNIT_USER_DEPT D WHERE D.DEPT_CODE IN (${nexusDpartment})) </if> <if test="deptCode !=null and deptCode !=''"> AND T.ID IN (SELECT DISTINCT D.USER_ID FROM UNIT_USER_DEPT D WHERE D.DEPT_CODE = #{deptCode}) </if> </where> <if test="sort != null and sort != ''"> order by ${sort} <if test="direction != null and direction != ''"> ${direction} </if> </if> </select>
Ⅷ 6.mybatis里面的动态sql是怎么设定的，常用标签有那些以及其
1、动态SQL片段
通过SQL片段达到代码复用
<!-- 动态条件分页查询 -->
<sql id="sql_count">
select count(*)
</sql>
<sql id="sql_select">
select *
</sql>
<sql id="sql_where">
from icp
<dynamic prepend="where">
<isNotEmpty prepend="and" property="name">
name like '%$name$%'
</isNotEmpty>
<isNotEmpty prepend="and" property="path">
path like '%path$%'
</isNotEmpty>
<isNotEmpty prepend="and" property="area_id">
area_id = #area_id#
</isNotEmpty>
<isNotEmpty prepend="and" property="hided">
hided = #hided#
</isNotEmpty>
</dynamic>
<dynamic prepend="">
<isNotNull property="_start">
<isNotNull property="_size">
limit #_start#, #_size#
</isNotNull>
</isNotNull>
</dynamic>
</sql>
<select id="findByParamsForCount" parameterClass="map" resultClass="int">
<include refid="sql_count"/>
<include refid="sql_where"/>
</select>
<select id="findByParams" parameterClass="map" resultMap="icp.result_base">
<include refid="sql_select"/>
<include refid="sql_where"/>
</select>
2、数字范围查询
所传参数名称是捏造所得，非数据库字段，比如_img_size_ge、_img_size_lt字段
<isNotEmpty prepend="and" property="_img_size_ge">
<![CDATA[
img_size >= #_img_size_ge#
]]>
</isNotEmpty>
<isNotEmpty prepend="and" property="_img_size_lt">
<![CDATA[
img_size < #_img_size_lt#
]]>
</isNotEmpty>
多次使用一个参数也是允许的
<isNotEmpty prepend="and" property="_now">
<![CDATA[
execplantime >= #_now#
]]>
</isNotEmpty>
<isNotEmpty prepend="and" property="_now">
<![CDATA[
closeplantime <= #_now#
]]>
</isNotEmpty>
3、时间范围查询
<isNotEmpty prepend="" property="_starttime">
<isNotEmpty prepend="and" property="_endtime">
<![CDATA[
createtime >= #_starttime#
and createtime < #_endtime#
]]>
</isNotEmpty>
</isNotEmpty>
Ⅸ mybatis设置sql通过什么标签
设置数据类型的话，以制作的可变数据标签为例子，设置的话需要在软件上方“数据库设置”，添加对应的数据类型，之后在弹出的对应窗口中，通过选择电脑上面的数据库类型文件，之后今天添加即可。
Ⅹ mybatis sql标签<update>怎么获取返回值
mybatis的update默认返回操作记录的条数，先定义一个resultMap:
<resultMap id="integer" type="java.lang.Integer">
</resultMap>
然后标签里面返回integer：
<update id="do..." resultMap="integer"></update>
在定义接口里面返回Integer即可：
public Integer do...();