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mazhenhua
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update test.xml
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‎sql/test.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
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<mapper namespace="Test">
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<sql id="sometable">
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fruits
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</sql>
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<sql id="somewhere">
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WHERE
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category = #{category}
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</sql>
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<sql id="someinclude">
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FROM
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<include refid="${include_target}"/>
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<include refid="somewhere"/>
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</sql>
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<select id="testParameters">
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SELECT
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name,
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category,
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price
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FROM
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fruits
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WHERE
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category = #{category}
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AND price > ${price}
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</select>
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<select id="testInclude">
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SELECT
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name,
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category,
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price
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<include refid="someinclude">
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<property name="prefix" value="Some"/>
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<property name="include_target" value="sometable"/>
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</include>
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</select>
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<select id="testIf">
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SELECT
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name,
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category,
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price
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FROM
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fruits
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WHERE
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1=1
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<if test="category != null and category !=''">
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AND category = #{category}
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</if>
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<if test="price != null and price !=''">
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AND price = ${price}
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<if test="price >= 400">
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AND name = 'Fuji'
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</if>
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</if>
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</select>
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<select id="testTrim">
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SELECT
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name,
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category,
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price
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FROM
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fruits
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<trim prefix="WHERE" prefixOverrides="AND|OR">
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OR category = 'apple'
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OR price = 200
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</trim>
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</select>
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<select id="testWhere">
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SELECT
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name,
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category,
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price
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FROM
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fruits
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<where>
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AND category = 'apple'
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<if test="price != null and price !=''">
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AND price = ${price}
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</if>
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</where>
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</select>
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<update id="testSet">
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UPDATE
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fruits
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<set>
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<if test="category != null and category !=''">
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category = #{category},
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</if>
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<if test="price != null and price !=''">
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price = ${price},
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</if>
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</set>
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WHERE
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name = #{name}
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</update>
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<select id="testChoose">
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SELECT
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name,
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category,
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price
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FROM
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fruits
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<where>
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<choose>
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<when test="name != null">
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AND name = #{name}
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</when>
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<when test="category == 'banana'">
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AND category = #{category}
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<if test="price != null and price !=''">
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AND price = ${price}
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</if>
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</when>
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<otherwise>
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AND category = 'apple'
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</otherwise>
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</choose>
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</where>
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</select>
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<select id="testForeach">
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SELECT
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name,
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category,
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price
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FROM
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fruits
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<where>
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category = 'apple' AND
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<foreach collection="apples" item="name" open="(" close=")" separator="OR">
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<if test="name == 'Jonathan' or name == 'Fuji'">
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name = #{name}
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</if>
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</foreach>
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</where>
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</select>
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<insert id="testInsertMulti">
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INSERT INTO
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fruits
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(
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name,
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category,
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price
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)
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VALUES
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<foreach collection="fruits" item="fruit" separator=",">
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(
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#{fruit.name},
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#{fruit.category},
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${fruit.price}
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)
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</foreach>
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</insert>
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<select id="testBind">
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<bind name="likeName" value="'%' + name + '%'"/>
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SELECT
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name,
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category,
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price
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FROM
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fruits
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WHERE
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name like #{likeName}
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</select>
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</mapper>

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