blocks|key|1506608|text|SELECT+DATEPART(HOUR,+GETDATE());|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1506609|DATEPART+documentation|unstyled|offset|length|style|CODE|1506610|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/ms174420%2528loband%2529.aspx^0|0|0|8|0|M|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|T|8|@$G|U|H|V|I|J]]|9|@$G|W|H|X|1|Y]]|A|$]]|$1|K|3|-4|5|F|7|Z|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

<pre><code>SELECT DATEPART(HOUR, GETDATE());
</code></pre>

<a href="http://msdn.microsoft.com/en-us/library/ms174420%28loband%29.aspx" rel="noreferrer"><code>DATEPART</code> documentation</a>

blocks|key|1292049|text|使用datepart。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1292050|例如：|1292051|datepart(hh,+date)|code-block|syntax|javascript|1292052|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/ms174420.aspx^0|2|8|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

Use <a href="http://msdn.microsoft.com/en-us/library/ms174420.aspx" rel="nofollow noreferrer">datepart</a>.

E.g.:

<pre><code>datepart(hh, date)
</code></pre>

blocks|key|1292086|text|也试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1292087|+++DATEPART(HOUR,GETDATE())+|code-block|syntax|javascript|1292088|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

try this one too:

<pre><code> DATEPART(HOUR,GETDATE()) 
</code></pre>

blocks|key|1506694|text|..。您可以在任何粒度类型上使用它，例如：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1506695|DATEPART(YEAR,+[date])

DATEPART(MONTH,+[date])+

DATEPART(DAY,+[date])++++

DATEPART(HOUR,+[date])+

DATEPART(MINUTE,+[date])|code-block|syntax|javascript|1506696|(注意:我喜欢日期周围的保留字。当然，这是在带有时间戳的列被标记为“date”的情况下)|1506697|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

... you can use it on any granularity type i.e.:

<pre><code>DATEPART(YEAR, [date])

DATEPART(MONTH, [date]) 

DATEPART(DAY, [date]) 

DATEPART(HOUR, [date]) 

DATEPART(MINUTE, [date])
</code></pre>

(note: I like the [ ] around the date reserved word though. Of course that's in case your column with timestamp is labeled "date")

blocks|key|1292202|text|DATEPART()函数用于返回日期/时间的单个部分，例如年、月、日、小时、分钟等。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1292203|datepart++++***Abbreviation

year++++++++***yy,+yyyy+
quarter+++++***qq,+q+
month+++++++***mm,+m+
dayofyear+++***dy,+y+
day+++++++++***dd,+d+
week++++++++***wk,+ww+
weekday+++++***dw,+w+
hour++++++++***hh+
minute++++++***mi,+n+
second++++++***ss,+s+
millisecond+***ms+
microsecond+***mcs+
nanosecond++***ns+|code-block|syntax|javascript|1292204|示例|1292205|select+*+
from+table001
where+datepart(hh,datetime)+like+23|1292206|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

The DATEPART() function is used to return a single part of a date/time, such as year, month, day, hour, minute, etc.

<pre><code>datepart ***Abbreviation

year ***yy, yyyy 
quarter ***qq, q 
month ***mm, m 
dayofyear ***dy, y 
day ***dd, d 
week ***wk, ww 
weekday ***dw, w 
hour ***hh 
minute ***mi, n 
second ***ss, s 
millisecond ***ms 
microsecond ***mcs 
nanosecond ***ns 
</code></pre>

Example

<pre><code>select * 
from table001
where datepart(hh,datetime) like 23
</code></pre>

blocks|key|1292226|text|必须使用datepart()|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1292227|like+


datepart(hour+,+getdate())|code-block|syntax|javascript|1292228|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

you must use datepart()

<pre><code>like 


datepart(hour , getdate())
</code></pre>

blocks|key|1506828|text|DATEPART(HOUR,+[date])返回以军事时间表示的小时(+00到23+)如果你想要凌晨1点，下午3点等，你需要把它找出来：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1506829|SELECT+Run_Time_Hour+=
CASE+DATEPART(HOUR,+R.date_schedule)
++++WHEN+0+THEN++'12AM'
++++WHEN+1+THEN+++'1AM'
++++WHEN+2+THEN+++'2AM'
++++WHEN+3+THEN+++'3AM'
++++WHEN+4+THEN+++'4AM'
++++WHEN+5+THEN+++'5AM'
++++WHEN+6+THEN+++'6AM'
++++WHEN+7+THEN+++'7AM'
++++WHEN+8+THEN+++'8AM'
++++WHEN+9+THEN+++'9AM'
++++WHEN+10+THEN+'10AM'
++++WHEN+11+THEN+'11AM'
++++WHEN+12+THEN+'12PM'
++++ELSE+CONVERT(varchar,+DATEPART(HOUR,+R.date_schedule)-12)+%2B+'PM'
END
FROM
++++dbo.ARCHIVE_RUN_SCHEDULE+R|code-block|syntax|javascript|1506830|entityMap^0|0|M|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

<code>DATEPART(HOUR, [date])</code> returns the hour in military time ( 00 to 23 )
If you want 1AM, 3PM etc, you need to case it out:

<pre><code>SELECT Run_Time_Hour =
CASE DATEPART(HOUR, R.date_schedule)
 WHEN 0 THEN '12AM'
 WHEN 1 THEN '1AM'
 WHEN 2 THEN '2AM'
 WHEN 3 THEN '3AM'
 WHEN 4 THEN '4AM'
 WHEN 5 THEN '5AM'
 WHEN 6 THEN '6AM'
 WHEN 7 THEN '7AM'
 WHEN 8 THEN '8AM'
 WHEN 9 THEN '9AM'
 WHEN 10 THEN '10AM'
 WHEN 11 THEN '11AM'
 WHEN 12 THEN '12PM'
 ELSE CONVERT(varchar, DATEPART(HOUR, R.date_schedule)-12) + 'PM'
END
FROM
 dbo.ARCHIVE_RUN_SCHEDULE R
</code></pre>

blocks|key|1507027|text|select+case+when+[am+or+_pm]+='PM'+and+datepart(HOUR,time_received)<>12+
+++++++++++then+dateadd(hour,12,time_received)+
+++++++++++else+time_received+
+++++++END+
from+table|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1507028|作品|unstyled|1507029|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>select case when [am or _pm] ='PM' and datepart(HOUR,time_received)&lt;&gt;12 
 then dateadd(hour,12,time_received) 
 else time_received 
 END 
from table
</code></pre>

works

blocks|key|1292483|text|也试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1292484|SELECT+CONVERT(CHAR(8),GETDATE(),108)|code-block|syntax|javascript|1292485|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this one too:

<pre><code>SELECT CONVERT(CHAR(8),GETDATE(),108)
</code></pre>

blocks|key|1292500|text|select+convert(time,GETDATE())|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1292501|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>select convert(time,GETDATE())
</code></pre>

blocks|key|1292567|text|要包括AM+/+PM+-请使用以下内容：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1292568|SELECT+
++concat(case+when+datepart(hour,getdate())+%25+12+=+0+then+12+
++++++++++++++else+datepart(hour,getdate())+%25+12+end,
+++++++++case+when+datepart(hour,getdate())+<+12+then+'+AM'+
++++++++++++++else+'+PM'+end
++++++++)|code-block|syntax|javascript|1292569|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

To include AM / PM - use the below:
<pre><code>SELECT 
 concat(case when datepart(hour,getdate()) % 12 = 0 then 12 
 else datepart(hour,getdate()) % 12 end,
 case when datepart(hour,getdate()) &lt; 12 then ' AM' 
 else ' PM' end
 )
</code></pre>

I can extract the month and day by using <code>Day(Date())</code>, <code>Month(Date())</code>. I can't extract hours, with <code>HOUR(Date())</code>. I get the following error.

<pre><code>'HOUR' is not a recognized built-in function name.
</code></pre>

How can I extract hours?

Extracting hours from a DateTime (SQL Server 2005)

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我可以通过使用Day(Date())，Month(Date())来提取月份和日期。和HOUR(Date())在一起我抽不出时间。我得到以下错误。'HOUR' is not a recognized built-in function name.如何提取小时数？

问从DateTime中提取小时数(SQL Server2005)
EN

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问从DateTime中提取小时数(SQL Server2005)
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