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怎么在多表查询中建立索引，实现效率的提高，谢谢。
- select s.id,s.name,p.price,m.name as clientname,m.register_address,z.img_source from cl_product_i18n s,cl_product n,t_mdm_client m,
cl_category_product_rel t,pr_price p,cl_product_address...
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cocos2d中函数通过JNI调用android中类方法的疑问
- 如题，我试图在cocos2d中调用android的某方法，android中被调用方法如下：
public class AppActivity extends Cocos2dxActivity {
static {
System.loadLibrary("cocos2...
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node-apn推送消息时513错误是什么意思?
- var apn=require("apn")
var token = '60c3b0b7 b6c464f0 e86bf6f0 ac1fc3d3 26701bae fae89183 4c2d80d9 51811965'; //长度为64的设备Token
var options = { "gate...
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sql优化 两个表连接 怎么优化？
- select a.id, a.wlbm, a.wlpm, a.jb, b.gysmc, b.mdm, b.ly
from gwdc_wgzx_wldwz a,
(select t.gysmc, t.mdm, t.ly, t.wlz ||...
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安卓系统错误: 安装失败 * 。 设备 * : 超时
- <div class="post-text" itemprop="text">
<p>I'm getting this error from time to time and don't know what causing this:<br>
When trying to run/debug an Android app on a real...
