大约有 16,000 项符合查询结果（耗时：0.0266秒） [XML]
mysql create user if not exists
...
In 5.7.6 and above, you should be able to use CREATE USER
CREATE USER IF NOT EXISTS 'user'@'localhost' IDENTIFIED BY 'password';
Note that the 5.7.6 method doesn't actually grant any permissions.
If you aren't using a version which h...
MySQL InnoDB not releasing disk space after deleting data rows from table
I have one MySQL table using the InnoDB storage engine; it contains about 2M data rows. When I deleted data rows from the table, it did not release allocated disk space. Nor did the size of the ibdata1 file reduce after running the optimize table command.
...
How to simulate a mouse click using JavaScript?
I know about the document.form.button.click() method. However, I'd like to know how to simulate the onclick event.
7 An...
What is the difference between the different methods of putting JavaScript code in an ?
...
I quite enjoy Matt Kruse's Javascript Best Practices article. In it, he states that using the href section to execute JavaScript code is a bad idea. Even though you have stated that your users must have JavaScript enabled, there's no reason you can't have a sim...
SQL Server: What is the difference between CROSS JOIN and FULL OUTER JOIN?
What is the difference between CROSS JOIN and FULL OUTER JOIN in SQL Server?
10 Answers
...
Find a pair of elements from an array whose sum equals a given number
Given array of n integers and given a number X, find all the unique pairs of elements (a,b), whose summation is equal to X.
...
How do you compare structs for equality in C?
...ties to do this - you have to do it yourself and compare each structure member by member.
share
|
improve this answer
|
follow
|
...
Objective-C : BOOL vs bool
I saw the "new type" BOOL ( YES , NO ).
10 Answers
10
...
Does this app use the Advertising Identifier (IDFA)? - AdMob 6.8.0
...re and Apple is asking me if this app users IDFA. I'm using the latest Admob SDK or 6.8.0 and I don't know if it uses IDFA or not, and if it does which check boxes should I hit X.X
...
Check if a folder exist in a directory and create them using C#
...
Doppelganger
15133 silver badges88 bronze badges
answered Feb 1 '12 at 7:15
cycaHuHcycaHuH
2,45511 gold ...