大约有 40,000 项符合查询结果（耗时：0.0433秒） [XML]
Does MySQL index foreign key columns automatically?
...
Yes, but only on innodb. Innodb is currently the only shipped table format that has foreign keys implemented.
share
|
improve this answer
|
follow
...
How to combine two or more querysets in a Django view?
...
If merging querysets from the same table to perform an OR query, and have duplicated rows you can eliminate them with the groupby function: from itertools import groupby unique_results = [rows.next() for (key, rows) in groupby(result_list, key=lambda obj: obj...
Best XML parser for Java [closed]
...g parser implementation in a standard way. The code should be much more portable, and when you realise that a specific parser has grown too old, you can replace it with another without changing a line of your code (if you do it correctly).
Basically there are three ways of handling XML in a standar...
How do I create an HTML table with a fixed/frozen left column and a scrollable body?
...
If you want a table where only the columns scroll horizontally, you can position: absolute the first column (and specify its width explicitly), and then wrap the entire table in an overflow-x: scroll block. Don't bother trying this in IE...
SQL Server Output Clause into a scalar variable
Is there any "simple" way to do this or I need to pass by a table variable with the "OUTPUT ... INTO" syntax?
3 Answers
...
MySQL get row position in ORDER BY
With the following MySQL table:
9 Answers
9
...
What is the difference between “word-break: break-all” versus “word-wrap: break-word” in CSS
...at the container width — especially if the container is a pre element or table cell where the word-wrap property may not work as expected.
– gfullam
Jun 2 '15 at 18:50
...
How to play audio?
...ats as HTML5’s <audio>. Wikipedia has a audio format compatibility table. new Audio() can play WAV files in all browsers except Internet Explorer.
– Rory O'Kane
Mar 15 '15 at 14:18
...
Compare two MySQL databases [closed]
... sets, etc. mysqldump --opt --compact --skip-extended-insert -u user -p db table > file.sql
– zanlok
Mar 6 '12 at 21:53
...
Django-DB-Migrations: cannot ALTER TABLE because it has pending trigger events
...s at the django shell. If you're looking for something more formal and testable, it depends on what versions you're using. If you use south, see: south.readthedocs.org/en/latest/tutorial/part3.html and if you use django's migrations, see the "data migrations" section here: docs.djangoproject.com/e...