执行多个插入查询(Executing multiple insert queries)
我即将插入365个插入记录,我想知道哪个更好。
1)逐个插入1000个插入查询(对于每个记录)
2)插入像
insert into table name ('field1', 'field2') values (value,value),(value,value),(value,value),(value,value)
我希望第二个执行得更快并且它会有用。
I am about to insert 365 insert records, I want to know which would be better.
1) Inserting 1000 insert queries one by one (for every record)
2) Insert like
insert into table name ('field1', 'field2') values (value,value),(value,value),(value,value),(value,value)
I want to does the second one perform faster and will it be useful.
原文:https://stackoverflow.com/questions/18606708
最满意答案
从你的代码解释给我的上面,它看起来像滑块的每个幻灯片将成为一个图像。 如果是这样,我建议将滑块更改为以下代码:
代码片段:
.slider { width: 100%; max-width: 960px; overflow: hidden; } .slider figure img { width: 25%; float: left; height: auto; } .slider figure { width: 400%; position: relative; margin: 0; padding: 0; animation: 10s slide infinite; -webkit-animation: 10s slide infinite; } @-webkit-keyframes slide { 0% { left: 0%; } 16% { left: 0%; } 33% { left: -100%; } 49% { left: -100%; } 66% { left: -200%; } 82% { left: -200%; } 100% { left: -300%; } }
<div class="slider"> <figure> <img src="https://i.ytimg.com/vi/mxbzT3uYXxE/maxresdefault.jpg"> <img src="http://cdn.playbuzz.com/cdn/1af8dfed-eacb-4228-8219-8781715daa2d/115aad8d-8eee-45e4-b439-450602e843fd.jpg"> <img src="http://www.majorspoilers.com/wp-content/uploads/2011/08/MSC6.jpg"> <img src="http://static.srcdn.com/wp-content/uploads/franklin-richards.jpg"> </figure> </div>
我们可以使用实际的
img
标签,而不是每次都有特定的DIV调用您的img
类。 除此之外,在这种方法中,我使用了keyframes
CSS来控制幻灯片图像的位置。如果你真的想用
div
内容来控制它,你可以简单地将图片包装到你的div
,并将类.slider figure img
.slider figure div
以包含其他类型的内容。我希望这能帮助你做出努力。
From what your code is explaining to me above it looks like each slide of your slider is going to be an image. If so, I recommend altering your slider to the following code below:
CODE SNIPPET:
.slider { width: 100%; max-width: 960px; overflow: hidden; } .slider figure img { width: 25%; float: left; height: auto; } .slider figure { width: 400%; position: relative; margin: 0; padding: 0; animation: 10s slide infinite; -webkit-animation: 10s slide infinite; } @-webkit-keyframes slide { 0% { left: 0%; } 16% { left: 0%; } 33% { left: -100%; } 49% { left: -100%; } 66% { left: -200%; } 82% { left: -200%; } 100% { left: -300%; } }
<div class="slider"> <figure> <img src="https://i.ytimg.com/vi/mxbzT3uYXxE/maxresdefault.jpg"> <img src="http://cdn.playbuzz.com/cdn/1af8dfed-eacb-4228-8219-8781715daa2d/115aad8d-8eee-45e4-b439-450602e843fd.jpg"> <img src="http://www.majorspoilers.com/wp-content/uploads/2011/08/MSC6.jpg"> <img src="http://static.srcdn.com/wp-content/uploads/franklin-richards.jpg"> </figure> </div>
Rather than having a specific DIV each time to call your
img
class, we can instead just use the actualimg
tag. Along with that, in this method I've used thekeyframes
css to control the slide images positioning.Should you really want to control this with
div
content, you could simply wrap the images in yourdiv
and alter the class.slider figure img
to.slider figure div
to include other types of content.I hope that this helps you in your endeavours.
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