SQL

1. Orace 存在更新，不存在插入的写法 【MERGE INTO】-【when not matched then insert】-【when matched then update】

<insert id="updateUserRole" >
        MERGE INTO SVC_ROLE_USER RU USING 
            (SELECT #{userAccount, jdbcType=VARCHAR} as userAccount, #{roleCode, jdbcType=VARCHAR} as roleCode from dual) d 
            on (RU.USER_ACCOUNT = d.userAccount AND RU.ROLE_CODE = d.roleCode)
        when not matched then insert
            <trim prefix="(" suffix=")" suffixOverrides=",">
                USER_ACCOUNT, 
                ROLE_CODE, 
                STATUS, 
                CREATER, 
                CREATED_TIME
            </trim>
            <trim prefix="values (" suffix=")" suffixOverrides=",">
                #{userAccount, jdbcType=VARCHAR}, 
                #{roleCode, jdbcType=VARCHAR},
                #{status, jdbcType=VARCHAR, typeHandler=com.ch.evaluation.common.mybatis.MyBatisEnumHandlerSTATUS} ,
                #{creater, jdbcType=VARCHAR}, 
                SYSDATE
            </trim>
        when matched then update
            <set>
                STATUS = #{status, jdbcType=VARCHAR, typeHandler=com.ch.evaluation.common.mybatis.MyBatisEnumHandlerSTATUS} ,
                MODIFIER = #{modifier, jdbcType=VARCHAR}, 
                MODIFIED_TIME = SYSDATE
            </set>
            where ROLE_CODE = #{roleCode, jdbcType=VARCHAR AND USER_ACCOUNT = #{userAccount, jdbcType=VARCHAR}
  </insert>

2. MySql 存在更新，不存在插入的写法【INSERT INTO】-【ON DUPLICATE KEY】

<insert id="mergeSelective" parameterType="com.zhangmen.teacher.model.forge.TeacherSalaryAccount" >
    INSERT INTO t_biz_teacher_salary_account
        <trim prefix="(" suffix=")" suffixOverrides="," >
          <if test="teacherId != null" >
            teacher_id,
          </if>
          <if test="idCardNumber != null" >
            id_card_number,
          </if>
          <if test="bankAccount != null" >
            bank_account,
          </if>
          <if test="bankName != null" >
            bank_name,
          </if>
          <if test="bankProvince != null" >
            bank_province,
          </if>
          <if test="bankCity != null" >
            bank_city,
          </if>
          <if test="bankBranch != null" >
            bank_branch,
          </if>
          <if test="bankAccountMobile != null" >
            bank_account_mobile,
          </if>
          <if test="alipayAccount != null" >
            alipay_account,
          </if>
          <if test="remark != null" >
            remark,
          </if>
          <if test="contractStatus != null" >
            contract_status,
          </if>
          <if test="deleted != null" >
            deleted,
          </if>
          <if test="createdTime != null" >
            created_time,
          </if>
          <if test="updatedTime != null" >
            updated_time,
          </if>
        </trim>
        <trim prefix="values (" suffix=")" suffixOverrides="," >
          <if test="teacherId != null" >
            #{teacherId,jdbcType=INTEGER},
          </if>
          <if test="idCardNumber != null" >
            #{idCardNumber,jdbcType=VARCHAR},
          </if>
          <if test="bankAccount != null" >
            #{bankAccount,jdbcType=VARCHAR},
          </if>
          <if test="bankName != null" >
            #{bankName,jdbcType=VARCHAR},
          </if>
          <if test="bankProvince != null" >
            #{bankProvince,jdbcType=VARCHAR},
          </if>
          <if test="bankCity != null" >
            #{bankCity,jdbcType=VARCHAR},
          </if>
          <if test="bankBranch != null" >
            #{bankBranch,jdbcType=VARCHAR},
          </if>
          <if test="bankAccountMobile != null" >
            #{bankAccountMobile,jdbcType=VARCHAR},
          </if>
          <if test="alipayAccount != null" >
            #{alipayAccount,jdbcType=VARCHAR},
          </if>
          <if test="remark != null" >
            #{remark,jdbcType=VARCHAR},
          </if>
          <if test="contractStatus != null" >
            #{contractStatus,jdbcType=TINYINT},
          </if>
          <if test="deleted != null" >
            #{deleted,jdbcType=BIT},
          </if>
          <if test="createdTime != null" >
            #{createdTime,jdbcType=TIMESTAMP},
          </if>
          <if test="updatedTime != null" >
            #{updatedTime,jdbcType=TIMESTAMP},
          </if>
        </trim>
    ON DUPLICATE KEY
    <trim prefix="UPDATE" suffixOverrides="," >
          <if test="idCardNumber != null" >
            id_card_number = #{idCardNumber,jdbcType=VARCHAR},
          </if>
          <if test="bankAccount != null" >
            bank_account = #{bankAccount,jdbcType=VARCHAR},
          </if>
          <if test="bankName != null" >
            bank_name = #{bankName,jdbcType=VARCHAR},
          </if>
          <if test="bankProvince != null" >
            bank_province = #{bankProvince,jdbcType=VARCHAR},
          </if>
          <if test="bankCity != null" >
            bank_city = #{bankCity,jdbcType=VARCHAR},
          </if>
          <if test="bankBranch != null" >
            bank_branch = #{bankBranch,jdbcType=VARCHAR},
          </if>
          <if test="bankAccountMobile != null" >
            bank_account_mobile = #{bankAccountMobile,jdbcType=VARCHAR},
          </if>
          <if test="alipayAccount != null" >
            alipay_account = #{alipayAccount,jdbcType=VARCHAR},
          </if>
          <if test="remark != null" >
            remark = #{remark,jdbcType=VARCHAR},
          </if>
          <if test="contractStatus != null" >
            contract_status = #{contractStatus,jdbcType=TINYINT},
          </if>
          <if test="deleted != null" >
            deleted = #{deleted,jdbcType=BIT},
          </if>
          <if test="createdTime != null" >
            created_time = #{createdTime,jdbcType=TIMESTAMP},
          </if>
          <if test="updatedTime != null" >
            updated_time = #{updatedTime,jdbcType=TIMESTAMP},
          </if>
    </trim>
  </insert>