gaussdb与clickhouse的迁移改动语句转换

clickhouse不支持事务
begin end这种没法用
<update id="updateEndTime" parameterType="java.util.Map">
    BEGIN
    <foreach collection="mergeMap.entrySet()" item="value" index="key" separator="">
        UPDATE T_ALARM_INFO
        SET
        <if test="value!=null">
            END_TIME = #{value}
        </if>
        WHERE ID = #{key};
    </foreach>
    END
</update>
改成
注意clickhouse中药换成小写

alter TABLE CLOUD_NETWORK_VISUAL.T_ALARM_INFO
update
end_time = '2025-07-31 09:37:00.000'
WHERE id = '123';