在我们的Oracle数据库中,我们有一个名为RULES的表,其中包含一个名为SQLQUERY的字段.该字段是一个存储了SQL语句的varchar.PK是DM_PROJECT.
存储的典型语句可以是
select ACCOUNTNUMBER from CUSTOMERS where ACCUMULATED_SALES > 500000
我想做这样的事情:
select
*
from
customers
where
accountnumber like 'A%'
or salesregion = 999
or accountnumber in
(
<run the query SQLQUERY from RULES where DM_PROJECT=:DM_PROJECT>
)
可以这样做吗？
(次要问题:如果存储的查询使用自己的变量,可以这样做,例如
select ACCOUNTNUMBER from CUSTOMERS where ACCUMULATEDSALES > :LIMIT
)
我正在使用NetworkStream和TcpClient使用BeginRead异步接收数据.我需要对此操作应用超时,以便在指定的时间后读取将被中止.
据我所知,NetworkStream或TcpClient不支持 - 有一个ReceiveTimeout属性,但这似乎只适用于同步等效 - 'Read'.
甚至底层的Socket类似乎也不支持其BeginReceive方法中的超时.
我已经搜索过这个问题,我看到的唯一建议的解决方案是设置另一个后台线程来取消操作,如果它在超时期限内没有完成.这看起来像是一个可怕的黑客.当然有更好的方法吗？
当你重命名一个java文件时,它在文件中的类定义,它的用法应该被改变.mercurial支持这个功能吗？我正在使用Intellij Idea,不幸的是它不支持mercurial.我想用mercurial跟踪重命名任务,完全类似于Idea所做的所有subversion.有谁能够帮我？
非常感谢
我无法决定如何循环范围.这条路:
for (int i = 0; i < max_i; i++) {
for (int j = 0; j < max_j; j++) {
// first way - two loops
}
}
或者这样:
for (int k = 0; k < max_i*max_j; k++) {
// second way - one loop
}
谢谢,Boda Cydo.
我有以下json对象,我需要通过javascript提醒它.
{data:[{"empmenuid":"1","empid":null,"deptid":"66","aliasid":"66","firstname":"66","lastname":"66","sin":"66","status":"66","empclass":"66","hiredate":"66","seneoritydate":"66","separationdate":"66","recalldate":"66","martialstatus":"66","gender":"66","ethinicorigin":"66","ethinicsuborigin":"66","nationality":"66","address1":"66","address2":"66","city":"66","province":"66","postalcode":"66","country":"66","email":"66","officialemail":"66","phone":"66","otherphone":"66","fax":"66","officephone":"66","officeext":"66","officefax":"66","mobilephone":"66","pager":"66","locid":"66","jobtitle":"66","jobtitlestart":"66","fullpart":"66","manager":"66","managername":"66","middlename":"66","nickname":"66","paytype":"66","payfreq":"66"},{"empmenuid":"3","empid":null,"deptid":"12","aliasid":"12","firstname":"12","lastname":"12","sin":"12","status":"12","empclass":"12","hiredate":"12","seneoritydate":"12","separationdate":"12","recalldate":"12","martialstatus":"12","gender":"12","ethinicorigin":"12","ethinicsuborigin":"12","nationality":"12","address1":"12","address2":"12","city":"121","province":"12","postalcode":"12","country":"12","email":"12","officialemail":"12","phone":"12","otherphone":"12","fax":"12","officephone":"12","officeext":"12","officefax":"12","mobilephone":"12","pager":"12","locid":"12","jobtitle":"12","jobtitlestart":"12","fullpart":"12","manager":"12","managername":"12","middlename":"12","nickname":"12","paytype":"12","payfreq":"12"}],
recordType : 'object'}
我有代码:
internal static class IdCounter
{
[ThreadStatic]
private static int _id = 0;
static IdCounter()
{
}
public static int Id
{
get
{
lock(typeof(IdCounter))
{
return _id++;
}
}
}
}
public abstract class Request
{
protected Request(int requestId)
{
RequestId = IdCounter.Id;
}
}
在第二次调用时,我收到RequestId等于2,而不是1,问题出在哪里？我试图使用Thread.SetData,但结果是一样的.
我试图理解hook_node_type和hook_nodeapi之间的区别
我试图使用hook_node_type与story节点和一个简单的dsm,但一无所获.
function mymod_node_story($op, $info){
dsm($info);
}
我试图使用java进入sql进入1900年的日期,但我得到例外:
com.mysql.jdbc.MysqlDataTruncation: Data truncation: Incorrect datetime value: '1900-01-01 00:00:00'
<div id="wrapper" class="hfeed">
<div id="access">
<div id="menu">
<ul>
<li class="page_item page-item-2"><a title="About" href="/?page_id=2">About</a></li>
<li class="page_item page-item-20"><a title="Support" href="/?page_id=20">Support</a></li>
<li class="page_item page-item-22"><a title="Links" href="/?page_id=22">Links</a></li>
<li class="page_item page-item-47"><a title="About" href="/?page_id=47">About</a></li>
</ul>
</div>
</div><!-- #access -->
</div>
我目前的CSS:
div#menu {
background:#000;
height:1.5em;
margin:1em 0;
}
div#menu ul,div#menu ul ul {
line-height:1;
list-style:none;
margin:0;
padding:0;
}
div#menu ul a {
display:block;
margin-right:1em;
padding:0.2em 0.5em;
text-decoration:none;
}
div#menu ul ul ul a {
font-style:italic;
}
div#menu ul li ul {
left:-999em;
position:absolute;
}
div#menu ul …