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Exception.Message vs Exception.ToString()
...wever, I read an article which states that it's better to use Exception.ToString() . With the latter, you retain more crucial information about the error.
...
How to avoid variable substitution in Oracle SQL Developer with 'trinidad & tobago'
...
this will work as you asked without CHAR(38):
update t set country = 'Trinidad and Tobago' where country = 'trinidad & '|| 'tobago';
create table table99(col1 varchar(40));
insert into table99 values('Trinidad &' || ' Tobago');
insert into table99 v...
What are the differences between a clustered and a non-clustered index?
...
Clustered indexes physically order the data on the disk. This means no extra data is needed for the index, but there can be only one clustered index (obviously). Accessing data using a clustered index is fastest.
All other indexes must be non-clustered. A non-clustered index has a duplicate of ...
EF Code First “Invalid column name 'Discriminator'” but no inheritance
...as an attribute of the derived class.
Example:
class Person
{
public string Name { get; set; }
}
[NotMapped]
class PersonViewModel : Person
{
public bool UpdateProfile { get; set; }
}
Now, even if you map the Person class to the Person table on the database, a "Discriminator" column wil...
How to iterate over arguments in a Bash script
... when there are no positional parameters whereas "$*" expands to the empty string -- and yes, there is a difference between no arguments and one empty argument. See ${1:+"$@"} in /bin/sh`.
– Jonathan Leffler
Dec 12 '14 at 22:12
...
how to exclude null values in array_agg like in string_agg using postgres?
...s g
GROUP BY g.id
) s
Or, simpler and may be cheaper, using array_to_string which eliminates nulls:
SELECT
g.id,
array_to_string(
array_agg(CASE WHEN g.canonical = 'Y' THEN g.users ELSE NULL END)
, ','
) canonical_users,
array_to_string(
array_agg(CASE ...
Open Redis port for remote connections
...
in config file I added string bind 0.0.0.0 after string bind 127.0.0.1. Restarted redis. And now can connect remotly.
– Maxim Yefremov
Sep 30 '13 at 10:08
...
Calling the base constructor in C#
...:
public class MyExceptionClass : Exception
{
public MyExceptionClass(string message, string extrainfo) : base(message)
{
//other stuff here
}
}
Note that a constructor is not something that you can call anytime within a method. That's the reason you're getting errors in your ...
How can I pass a parameter to a Java Thread?
...f a Runnable or Thread class
class MyThread extends Thread {
private String to;
public MyThread(String to) {
this.to = to;
}
@Override
public void run() {
System.out.println("hello " + to);
}
}
public static void main(String[] args) {
new MyThread("wo...
How to use the toString method in Java?
Can anybody explain to me the concept of the toString() method, defined in the Object class? How is it used, and what is its purpose?
...