大约有 47,000 项符合查询结果（耗时：0.0794秒） [XML]
What is the Oracle equivalent of SQL Server's IsNull() function?
...C> COALESCE-- this same syntax works on Oracle. If your data has empty strings instead of NULLS you might need something like this: COALESCE(TRIM(Tbl.myField1), TRIM(Tbl.myField2)) AS "myNewField".
– SherlockSpreadsheets
May 1 '19 at 16:33
...
Best way to write to the console in PowerShell
... writes to the console, not to the pipeline (Do-Something will not get the string):
Write-Host "hello world" | Do-Something
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C# list.Orderby descending
...problem when a small and capital letters exist, so to solve it, I used the string comparer.
allEmployees.OrderBy(employee => employee.Name,StringComparer.CurrentCultureIgnoreCase)
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Making a Location object in Android with latitude and longitude values
... created manually, though, wouldn't it be more appropriate to use an empty string rather than LocationManager.GPS_PROVIDER, LocationManager.PASSIVE or LocationManager.NETWORK_PROVIDER?
– ban-geoengineering
Nov 9 '19 at 20:26
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Passing command line arguments in Visual Studio 2010?
...t double quotes as shown in the example below.
static void Main(string[] args)
{
if(args == null || args.Length == 0)
{
Console.WriteLine("Please specify arguments!");
}
else
{
Console.Writ...
Adding a UILabel to a UIToolbar
...t("action") }
}
class ToolBarTitleItem: UIBarButtonItem {
init(text: String, font: UIFont, color: UIColor) {
let label = UILabel(frame: UIScreen.main.bounds)
label.text = text
label.sizeToFit()
label.font = font
label.textColor = color
label.tex...
Difference between float and double in php?
... some other machines.
Also, with or without xdebug, gettype still returns string(6) "double".
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Java: What is the difference between and ?
...low code to see it in debug.
public class ByteCodeParent
{
public static String name="ByteCode";
public ByteCodeParent()
{
System.out.println("In Constructor");
}
static
{
System.out.println("In Static");
}
{
System.out.println("In Instance");
}
To test, use
Class<B...
SQL function as default parameter value?
...your example.
From MSDN:
Only a constant value, such as a
character string; a scalar function
(either a system, user-defined, or CLR
function); or NULL can be used as a
default.
The function GETDATE() returns a different value from time to time, so it is not a constant expression.
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What is the format specifier for unsigned short int?
... a short int argument.
So to print an unsigned short integer, the format string should be "%hu".
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