大约有 48,000 项符合查询结果（耗时：0.0446秒） [XML]
Entity Attribute Value Database vs. strict Relational Model Ecommerce
...,1)),MID(sales_order_entity_varchar.value,2)), "Address") as type,
GROUP_CONCAT(
CONCAT( eav_attribute.attribute_code," ::::: ", sales_order_entity_varchar.value )
ORDER BY sales_order_entity_varchar.value DESC
SEPARATOR '!!!!!'
) as data
FROM sales_orde...
Best way to select random rows PostgreSQL
...ROM params p
,generate_series(1, 1100) g -- 1000 + buffer
GROUP BY 1 -- trim duplicates
) r
JOIN big USING (id)
LIMIT 1000; -- trim surplus
Generate random numbers in the id space. You have "few gaps", so add 10 % (enough t...
Multiple inputs with same name through POST in php
...
Eric answer is correct, but the problem is the fields are not grouped.
Imagine you have multiple streets and cities which belong together:
<h1>First Address</h1>
<input name="street[]" value="Hauptstr" />
<input name="city[]" value="Berlin" />
<h2>Secon...
Knight's Shortest Path on Chessboard
...blocks.
There are 3 patterns to notice:
The incrementing blue vertical groups of 4
The "primary" red diagonals (they run top-left to bottom-right, like a backslash)
The "secondary" green diagonals (same orientation as red)
(Make sure you see both sets of diagonals as top-left to bottom-right. ...
What is the point of Lookup?
...
It's a cross between an IGrouping and a dictionary. It lets you group items together by a key, but then access them via that key in an efficient manner (rather than just iterating over them all, which is what GroupBy lets you do).
For example, you c...
Disable a Maven plugin defined in a parent POM
...rks for me when disabling Findbugs in a child POM:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>findbugs-maven-plugin</artifactId>
<executions>
<execution>
<id>ID_AS_IN_PARENT</id> <!-- id is neces...
What is the difference between a thread and a fiber?
...ads under a single process. This makes fiber switching very fast. If you group all the fibers accessing a particular set of shared data under the context of a single kernel thread and have their scheduling handled by a single kernel thread, then you can eliminate synchronization issues since the f...
Why is Go so slow (compared to Java)?
... And here some details from that same thread that you have excluded - groups.google.com/group/golang-nuts/msg/2e568d2888970308
– igouy
Apr 24 '10 at 17:22
3
...
Clicking the text to select corresponding radio button
... label on the form itself. You want to put labels on each individual radio group, as shown below.
<form>
<p>What is my middle name?</p>
<br>
<input id="349" type="radio" value="1" name="question1">
<label for="349">Abe</label>
<br>
...
Differences between Octave and MATLAB? [closed]
...ic. Octave is much more buggy because it was developed and maintained by a group of volunteers, where the development of MATLAB is funded by millions of dollars by industry. I'm still a student and am using a student version of MATLAB, but I am thinking of going over to Octave once the stable versio...