大约有 30,000 项符合查询结果（耗时：0.0486秒） [XML]
Select top 10 records for each category
...dited to reflect your clarification):
select *
from Things t
where t.ThingID in (
select top 10 ThingID
from Things tt
where tt.Section = t.Section and tt.ThingDate = @Date
order by tt.DateEntered desc
)
and t.ThingDate = @Date
order by Section, DateEntered desc
...
iOS 7's blurred overlay effect using CSS?
...es CSS Clip property
that's it.
I also believe this could be done dynamically for any screen if using canvas to copy the current dom and blurring it.
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SQL ON DELETE CASCADE, Which Way Does the Deletion Occur?
...affected and not on the Courses
follow-up question: why do you have CourseID on table Category?
Maybe you should restructure your schema into this,
CREATE TABLE Categories
(
Code CHAR(4) NOT NULL PRIMARY KEY,
CategoryName VARCHAR(63) NOT NULL UNIQUE
);
CREATE TABLE Courses
(
CourseID INT...
Capture Image from Camera and Display in Activity
... image and display it.
package edu.gvsu.cis.masl.camerademo;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
public class MyCameraActivity...
sqlite alter table add MULTIPLE columns in a single statement
...
Note that the migrate method is already called in a transaction so there's limited benefit to this approach.
– Nicolas
Aug 9 at 21:27
add a ...
Python pandas Filtering out nan from a data selection of a column of strings
...ooking at what you originally want you can do just this without the dropna call:
nms[nms.name.notnull()]
UPDATE
Looking at this question 3 years later, there is a mistake, firstly thresh arg looks for at least n non-NaN values so in fact the output should be:
In [4]:
nms.dropna(thresh=2)
Out[4...
Percentage width child element in absolutely positioned parent on Internet Explorer 7
...of which is a relatively positioned div . When I use a percentage-based width on the child div , it collapses to 0 width on IE7, but not on Firefox or Safari.
...
Should I use a data.frame or a matrix?
...re was a function that would calculate the 2D path of the MCMC method. Basically, this means we take an initial point (x,y), and iterate a certain algorithm to find a new point (x,y) at each step, constructing this way the whole path. The algorithm involves calculating a quite complex function and t...
android: move a view on touch move (ACTION_MOVE)
I'd like to do a simple control: a container with a view inside. If I touch the container and I move the finger, I want to move the view to follow my finger.
...
Multi-gradient shapes
...
I don't think you can do this in XML (at least not in Android), but I've found a good solution posted here that looks like it'd be a great help!
ShapeDrawable.ShaderFactory sf = new ShapeDrawable.ShaderFactory() {
@Override
public Shader resize(int width, int height) {
...