mysql中用like实现多条件模糊查询

SELECT BigCategory
,SmallCategory,Model_No
,1 'yuefen'
,SUM(case when BizType='P' then MONTH1Num end ) as P
,SUM(case when BizType='S' then MONTH1Num end ) as S
,SUM(case when BizType='I' then MONTH1Num end ) as I
,SUM(case when BizType='P' then MONTH1Num end )- SUM(case when BizType='S' then MONTH1Num end )-SUM(case when BizType='I' then MONTH1Num end ) PanDian
FROM t_test
WHERE Model_No like 'iphone4s%'
OR WHERE Model_No like 'v480%'
SELECT BigCategory
,SmallCategory,Model_No
,1 'yuefen'
,SUM(case when BizType='P' then MONTH1Num end ) as P
,SUM(case when BizType='S' then MONTH1Num end ) as S
,SUM(case when BizType='I' then MONTH1Num end ) as I
,SUM(case when BizType='P' then MONTH1Num end )- SUM(case when BizType='S' then MONTH1Num end )-SUM(case when BizType='I' then MONTH1Num end ) PanDian
FROM t_test
WHERE Model_No like 'iphone4s%'
OR WHERE Model_No like 'v480%'
GROUP BY BigCategory,SmallCategory,Model_No;

我这段代码为什么老是报错，用的是mysql数据库

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