大约有 16,000 项符合查询结果（耗时：0.0274秒） [XML]
LEFT JOIN only first row
...hat worked for me and i wanted to generalize and explain what's going on.
convert:
LEFT JOIN table2 t2 ON (t2.thing = t1.thing)
to:
LEFT JOIN table2 t2 ON (t2.p_key = (SELECT MIN(t2_.p_key)
FROM table2 t2_ WHERE (t2_.thing = t1.thing) LIMIT 1))
the condition that connects t1 and t2 is mo...
Read Excel File in Python
...= (sheet.cell(row,col).value)
try:
value = str(int(value))
except ValueError:
pass
finally:
values.append(value)
item = Arm(*values)
items.append(item)
for item in items:
print item
print("Ac...
BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区，为创新赋能！
..., /* 设备安全管理OOB标志 */
BLE_AD_TYPE_INT_RANGE = 0x12, /* 设备连接参数范围 */
BLE_AD_TYPE_SOL_SRV_UUID = 0x14,...
How to len(generator()) [duplicate]
...too much; if we accept it, then by the same logic it's also meaningless to convert the output of a generator to a list... and yet list(generator()) works and is built into the language.
– Mark Amery
Jul 21 '15 at 10:40
...
Cell spacing in UICollectionView
...ing in a section of UICollectionView ? I know there is a property minimumInteritemSpacing I have set it to 5.0 still the spacing is not appearing 5.0. I have implemented the flowout delegate method.
...
Can I invoke an instance method on a Ruby module without including it?
...
module_function converts the method to a private one (well it does in my IRB anyway), which would break other callers :-(
– Orion Edwards
Nov 27 '08 at 0:19
...
“Prevent saving changes that require the table to be re-created” negative effects
...ll of the questions raised by the OP, and those questions are the ones I'm interested in, actually. In particular Are there any negative effects / possible drawbacks of doing this? and If so, is the table copy a 100% exact replica of the source table?. Do you have any information regarding those que...
Get top 1 row of each group
... EventScheduleTbl WHERE EventIDf = D.EventIDf and DatesPicked>= convert(date,getdate()) )
– Arun Prasad E S
Feb 1 '18 at 7:58
...
How do you set the Content-Type header for an HttpClient request?
...ence downloading a pdf. From the phone it tried to download an HTML. After converting the extension the file was normally encoded.
– Matteo Defanti
Aug 22 '15 at 18:08
...
How do you view ALL text from an ntext or nvarchar(max) in SSMS?
...
Return data as XML
SELECT CONVERT(XML, [Data]) AS [Value]
FROM [dbo].[FormData]
WHERE [UID] LIKE '{my-uid}'
Make sure you set a reasonable limit in the SSMS options window, depending on the result you're expecting.
This will work if the text you'r...