<?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="com.se.simu.mapper.SimuMapper">
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<select id="selectMaxId" resultType="java.lang.Integer">
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select coalesce(max(id), 0) from bs.simu;
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</select>
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</mapper>
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