大约有 48,000 项符合查询结果（耗时：0.0555秒） [XML]
Storing JSON in database vs. having a new column for each key
...ing user related data in my table - I have 2 columns - uid (primary key) and a meta column which stores other data about the user in JSON format.
...
MySQL Fire Trigger for both Insert and Update
Is it possible to fire a mysql trigger for both the insert and update events of a table?
3 Answers
...
Heap vs Binary Search Tree (BST)
What is the difference between a heap and BST?
8 Answers
8
...
How can I add new keys to a dictionary?
...y by assigning a value
to that key. If the key doesn't exist, it's added and points to that
value. If it exists, the current value it points to is overwritten.
—R. Navega
share
|
improve th...
How can I truncate a datetime in SQL Server?
...at's the best way to truncate a datetime value (as to remove hours minutes and seconds) in SQL Server 2008?
13 Answers
...
How to convert a currency string to a double with jQuery or Javascript?
... .00 trailing. Otherwise valid representations of currency such as "$1100" and "$1100." will be reduced by two orders of magnitude.
– Brian M. Hunt
Feb 8 '13 at 0:43
21
...
'sudo gem install' or 'gem install' and gem locations
Running ' sudo gem list --local ' and ' gem list --local ' give me differing results. My gem path is set to my home folder and only contains the gems from ' gem list --local '.
...
What does tree-ish mean in Git?
...ately leads to a (sub)directory
tree (Git refers to directories as "trees" and "tree objects").
In the original poster's case, foo is a directory that he wants to
specify. The correct way to specify a (sub)directory in Git is to use this
"tree-ish" syntax (item #15 from the Git revisions documentat...
What happens to a github student account's repositories at the end of 2 years?
...s your private repositories. Your private repositories will not be deleted and they will not be made public.
Of course, if you ever have any troubles, you can always email support@github.com.
share
|
...
Fastest way to count exact number of rows in a very large table?
...ECT COUNT(*) FROM TABLE_NAME will be slow when the table has lots of rows and lots of columns.
25 Answers
...