<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
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"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
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<mapper namespace="com.matrix.system.common.dao.UtilDao">
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<select id="selectRepeat" resultType="java.util.HashMap" parameterType="java.util.HashMap" >
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select
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*
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from ${tableName}
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where 1=1
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<if test="#{column} != null">
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and ${column} = #{value}
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</if>
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</select>
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<select id="selectRepeatTowColumn" resultType="java.util.HashMap" parameterType="java.util.HashMap" >
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select
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*
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from ${tableName}
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where 1=1
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<if test="#{column1} != null">
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and ${column1} = #{value1}
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</if>
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<if test="#{column2} != null">
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and ${column2} = #{value2}
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</if>
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</select>
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<!-- 获取一个表中的某个字段的最大值 -->
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<select id="selectMaxValue" parameterType="java.lang.String" resultType="java.lang.String" >
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select
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max(${column})
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from ${tableName}
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</select>
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<select id="selectCount" parameterType="java.lang.String" resultType="java.lang.Integer" >
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select count(*) from ${tableName} where ${column} = #{value}
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</select>
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</mapper>
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