大约有 40,000 项符合查询结果（耗时：0.0460秒） [XML]
ORA-01882: timezone region not found
...ID to the Server. The server needs to know that zone. You can check with
SELECT DISTINCT tzname FROM V$TIMEZONE_NAMES where tzname like 'Etc%';
I have some db servers which know about 'Etc/UTC' and 'UTC' (tzfile version 18) but others only know 'UTC' (tz version 11).
SELECT FILENAME,VERSION fro...
How to run a shell script in OS X by double-clicking?
...d:
chmod a+x yourscriptname
Then, in Finder, right-click your file and select "Open with" and then "Other...".
Here you select the application you want the file to execute into, in this case it would be Terminal. To be able to select terminal you need to switch from "Recommended Applications" t...
Is it possible to group projects in Eclipse?
...You define a working set and then add some projects to it. Later you could select a working set and only the projects you selected earlier are shown in project explorer.
Simpl grouping to reduce clutter.
http://help.eclipse.org/galileo/index.jsp?topic=/org.eclipse.platform.doc.user/concepts/cworkse...
Alter column, add default constraint
...e bla add constraint dt_bla default 1 for id
insert bla default values
select * from bla
also make sure you name the default constraint..it will be a pain in the neck to drop it later because it will have one of those crazy system generated names...see also How To Name Default Constraints And ...
How to convert linq results to HashSet or HashedSet
...f T explicitly:
var query = from i in Enumerable.Range(0, 10)
select new { i, j = i + 1 };
var resultSet = query.ToHashSet();
You can't do that with an explicit call to the HashSet<T> constructor. We're relying on type inference for generic methods to do it for us.
Now you coul...
Query an XDocument for elements by name at any depth
...n
TheDocument.Descendants( "{http://www.w3.org/2001/XMLSchema}Child" )
select
AnyElement;
ResultsTxt.AppendText( TheElements1.Count().ToString() );
//Example 2:
var TheElements2 =
from
AnyElement
in
TheDocument.Descendants( "{http://www.w3.org/2001/XMLSchema}Child" )
where
AnyE...
Creating a copy of a database in PostgreSQL [closed]
...
To disconnect all other users from the database, you can use this query:
SELECT pg_terminate_backend(pg_stat_activity.pid) FROM pg_stat_activity
WHERE pg_stat_activity.datname = 'originaldb' AND pid <> pg_backend_pid();
...
Where is SQL Server Management Studio 2012?
...all the entire SQL Server package, later on in the install process you can select to only install SSMS.
– Baodad
Jul 24 '13 at 18:21
...
How to exclude certain messages by TAG name using Android adb logcat?
... manpage:
v, --invert-match
Invert the sense of matching, to select non-matching lines.
For example:
$adb logcat | grep --invert-match 'notshownmatchpattern'
You can extend this by using regular expressions.
Here is an example of such an expression:
"/^(?:emails|tags|addresses...
Windows 7 SDK installation failure
...or modification.
Condition 1: If the Visual C++ Compilers checkbox is selected when the
Windows SDK 7.1 is installed, repaired, or modified after Visual
Studio 2010 SP1 has been installed, the error may be encountered and
some selected components may not be installed.
Workaround: Cl...