大约有 850 项符合查询结果（耗时：0.0185秒） [XML]
Can PHP PDO Statements accept the table or column name as parameter?
...SQL table names can contain other characters. See dev.mysql.com/doc/refman/5.0/en/identifiers.html
– Phil
Apr 29 '14 at 1:31
...
Opening the Settings app from another app
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You can use this on iOS 5.0 and later: This no longer works.
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs://"]];
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How to avoid the “divide by zero” error in SQL?
... of NullIf? Try it yourself! SELECT Value,1/NullIf(Value,0)FROM(VALUES(0),(5.0),(NULL))x(Value); Unless by "breaks" you mean returns a NULL? You can convert that to whatever you want with IsNull or Coalesce.
– ErikE
Jan 26 '17 at 16:54
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How to find the largest file in a directory and its subdirectories?
...FreeBSD 4.11. I guess I haven't read sort's man page since before FreeBSD 5.0 was released!
– ghoti
Sep 26 '12 at 11:41
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Replacement for deprecated sizeWithFont: in iOS 7?
...iOS 7.0";
if (SYSTEM_VERSION_LESS_THAN(@"7.0")) {
// code here for iOS 5.0,6.0 and so on
CGSize fontSize = [text sizeWithFont:[UIFont fontWithName:@"Helvetica"
size:12]];
} else {
// code here for iOS 7.0
CGSize fontSize = [tex...
How to write lists inside a markdown table?
... spans multiple lines.
Second row 5.0 Here's another one. Note
the blank line between
rows.
-------------------------------------------------------------
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dispatch_after - GCD in Swift?
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Simplest solution in Swift 3.0 & Swift 4.0 & Swift 5.0
func delayWithSeconds(_ seconds: Double, completion: @escaping () -> ()) {
DispatchQueue.main.asyncAfter(deadline: .now() + seconds) {
completion()
}
}
Usage
delayWithSeconds(1) {
//Do something...
How to make an AJAX call without jQuery?
... var versions = [
"MSXML2.XmlHttp.6.0",
"MSXML2.XmlHttp.5.0",
"MSXML2.XmlHttp.4.0",
"MSXML2.XmlHttp.3.0",
"MSXML2.XmlHttp.2.0",
"Microsoft.XmlHttp"
];
var xhr;
for (var i = 0; i < versions.length; i++) {
try {
xhr...
connecting to MySQL from the command line
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See here http://dev.mysql.com/doc/refman/5.0/en/connecting.html
mysql -u USERNAME -pPASSWORD -h HOSTNAMEORIP DATABASENAME
The options above means:
-u: username
-p: password (**no space between -p and the password text**)
-h: host
last one is name of the database t...
Update all values of a column to lowercase
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See http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_lower
UPDATE table_name SET tag = LOWER(tag)
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