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select * from yewutable
where  
(timestamp between  
convert(varchar(10),'2010-03-07 08:00:00',120)  
and  
convert(varchar(10),'2010-05-24 17:00:00',120)  
)
and
(timestamp between  
convert(varchar(8),'2010-03-07 08:00:00',108)  
and  
convert(varchar(10),'2010-05-24 17:00:00',108)  
)

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SQL code:
select * from yewutable
where [timestamp] between '2010-03-07 08:00:00' and '2010-05-24 17:00:00'
and convert(varchar(8),[timestamp],108) between '08:00:00' and '17:00:00'



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select convert(varchar(19),getdate(),120)

convert(varchar(8),callstarttimestamp ,108) between '01:00:00' and '02:00:00'
Õâ¸öÈçºÎÔÚ'2010-05-24 17:00:00'ÖÐÌáÈ¡µ½?
convert(varchar(8),getdate(),108) ÕâÑù¿ÉÒÔ
convert(varchar(8),'2010-03-07 08:00:00',108) ÕâÑùÈ´²»ÐÐ.
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select o_customer,o_price from orders having o_price >=avg(o_price)
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