大约有 40,000 项符合查询结果（耗时：0.0538秒） [XML]
SQLite - How do you join tables from different databases?
...s with keyword
.databases
Then you should be able to do the following.
select
*
from
db1.SomeTable a
inner join
db2.SomeTable b on b.SomeColumn = a.SomeColumn;
Note that "[t]he database names main and temp are reserved for the primary database and database to hold temporary tables a...
Custom Cell Row Height setting in storyboard is not responding
...cally because this answer applies to Interface Builder/Storyboards. If you select the cell in IB, then the Size Inspector shows Row Height at the top (with a "custom" checkbox), but if you select the whole table view the Size Inspector shows Row Height at the top there too (no "custom" in this case)...
Installing Apple's Network Link Conditioner Tool
...per.apple.com/download/more/?q=Additional%20Tools
Install the dmg file, select hardware from installer
select Network Link conditioner prefpane
share
|
improve this answer
|
...
Is there a way to rename an Xcode 4 scheme?
... hit "Manage Schemes". Once you do so, you'll have a window like this:
Select the scheme you want to change, and hit Return.
Now the scheme name will be editable, and you can change it to your hearts desire. Then hit Return again to save it.
...
How to perform .Max() on a property of all objects in a collection and return the object with maximu
...c T MaxObject<T,U>(this IEnumerable<T> source, Func<T,U> selector)
where U : IComparable<U> {
if (source == null) throw new ArgumentNullException("source");
bool first = true;
T maxObj = default(T);
U maxKey = default(U);
foreach (var ...
mysql - how many columns is too many?
...every column to be returned by every query is perfectly normal; that's why SELECT statement lets you explicitly name the columns you need.
As a general rule, your table structure should reflect your domain model; if you really do have 70 (100, what have you) attributes that belong to the same entit...
Disable developer mode extensions pop up in Chrome
... Extensions
Double click Configure extension installation whitelist policy
Select Enabled, and click Show
In the list, enter the ID(s) of the extensions you noted in Step 7
Click OK and restart Chrome.
That's it!
EDIT: As of July 2018, this approach no longer works: it seems Google has stopped ho...
Entity Framework: There is already an open DataReader associated with this Command
...al commands executed on single connection (or single command with multiple selects) while next DataReader is executed before first one has completed the reading. The only way to avoid the exception is to allow multiple nested DataReaders = turn on MultipleActiveResultSets. Another scenario when this...
onchange event on input type=range is not triggering in firefox while dragging
...
});
}
// example usage:
var myRangeInputElmt = document.querySelector("input" );
var myRangeValPar = document.querySelector("#rangeValPar" );
var myNumChgEvtsCell = document.querySelector("#numChgEvtsCell");
var myNumInpEvtsCell = document.querySelector("#numInpEvtsCel...
Razor MVC Populating Javascript array with Model Array
....SerializeObject(ViewBag.ComputeOfferings))),
desktopGrpComputeOfferingSelected: ko.observable(),
};
ko.applyBindings(desktopGrpViewModel);
...
<select name="ComputeOffering" class="form-control valid" id="ComputeOffering" data-val="true"
data-bind="options: availableComputeOffering,
...