大约有 47,000 项符合查询结果（耗时：0.0848秒） [XML]
To find whether a column exists in data frame or not
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202
Assuming that the name of your data frame is dat and that your column name to check is "d", you...
How to find largest objects in a SQL Server database?
...ages,
sum(a.data_pages) as DataPages,
(sum(a.total_pages) * 8) / 1024 as TotalSpaceMB,
(sum(a.used_pages) * 8) / 1024 as UsedSpaceMB,
(sum(a.data_pages) * 8) / 1024 as DataSpaceMB
FROM
sys.tables t
INNER JOIN
sys.indexes i ON t.object_id = i.object_id
INNER JOIN
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Check whether a string contains a substring
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edited Dec 15 '15 at 9:40
answered Sep 2 '11 at 12:21
Eug...
import module from string variable
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edited May 30 '17 at 6:37
Nam G VU
26.9k5656 gold badges194194 silver badges326326 bronze badges
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How can I see the specific value of the sql_mode?
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| @@sql_mode |
+------------+
| |
+------------+
1 row in set (0.00 sec)
mysql> set sql_mode=ORACLE;
Query OK, 0 rows affected (0.00 sec)
mysql> SELECT @@sql_mode;
+-------------------------------------------------------------------------------------------------------------------...
Get TransactionScope to work with async / await
...onContext based on this example http://blogs.msdn.com/b/pfxteam/archive/2012/01/20/10259049.aspx .
3 Answers
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Fold / Collapse the except code section in sublime text 2
...ould be would be to hold Ctrl followed by pressing the sequence k and then 0 or in my defaults I also seem to have it bound to the letter j:
Warning.
Pressing Ctrl+k twice will remove a line or a count of lines.
But not really cause you can put them back one by one by Ctrl+u
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importing pyspark in python shell
... have the same issue. (See http://geekple.com/blogs/feeds/Xgzu7/posts/351703064084736)
19 Answers
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Omitting the first line from any Linux command output
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answered Sep 6 '11 at 10:37
Fredrik PihlFredrik Pihl
39.4k55 gold badges7070 silver badges119119 bronze badges
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How to convert comma-delimited string to list in Python?
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edited Apr 18 '13 at 0:36
answered Oct 21 '11 at 1:35
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