<?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.xcong.excoin.modules.platform.dao.PlatformCnyUsdtExchangeDao">
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<select id="getCNYAndUSDTOne" resultType="com.xcong.excoin.modules.platform.entity.PlatformCnyUsdtExchangeEntity">
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select * from platform_cny_usdt_exchange limit 1
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</select>
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<update id="updateUsdt">
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update platform_cny_usdt_exchange set value = #{value}
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</update>
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</mapper>
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