sqlserver 字符串日期比较大小

select top 20 *from sp_goodscontent
 where LEN(goodsId)>3 and buyNow is not null 
and giftArray=\'好单库\'
--and goodsId=\'560969552229\'
order by CREATE_date DESC

select count(1) from sp_goodscontent
 where  buyNow is null 
and giftArray=\'好单库\'

select count(1) from sp_goodscontent
 where   giftArray=\'好单库\'
and buyNow is not null

select  *from sp_goodscontent
 where LEN(goodsId)>3 and buyNow is null 
--and giftArray=\'好单库\'
and len(goodsClick)<9
order by CREATE_date DESC

DELETE from sp_goodscontent
 where LEN(goodsId)>3 and buyNow is null 
--and giftArray=\'好单库\'
and len(goodsClick)<9

--update sp_goodscontent set isbook=0 where isbook=1
SELECT * FROM sp_goodscontent where isbook=1

SELECT CONVERT(date ,coupon_end_time,23) from sp_goodscontent  where coupon_end_time LIKE \'20%\'


SELECT * from sp_goodscontent where coupon_end_time <>\'\'


SELECT coupon_end_time from sp_goodscontent where coupon_end_time LIKE \'20%\'
AND DATEDIFF(SECOND,\'2019-07-15\',CONVERT(date ,coupon_end_time,23))>1