小编Sco*_*合理论的帖子

我的代码:

DECLARE report_date DATETIME;
set report_date='2013-01-17 00:00:00';

SELECT  *
  FROM `NMPP`.`capacitypersecond` 
  WHERE `StreamDT` >=report_date and `StreamDT` < '2013-01-18 00:00:00'  ;

SELECT  *
  FROM `NMPP`.`capacityperHr` 
  WHERE `StreamDT` >=report_date and `StreamDT` < '2013-01-18 00:00:00'  ;

SELECT  *
  FROM `NMPP`.`capacityperDay` 
  WHERE `TJLDate` >=report_date and `TJLDate` < '2013-01-18 00:00:00'  ;

-

DECLARE report_date DATETIME;
/* SQL Error (1064): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DECLARE …

我的网站是经典ASP和ASP.NET的结合

我的页面的默认编码目前是ISO-8859-1.

即使没有<meta>标签,响应页面也将编码为ISO-8859-1.

如何将其更改为UTF-8？

SqlException:将datetime2数据类型转换为datetime数据类型导致超出范围的值.

我的代码是这样的:

        using (var contxt = new realtydbEntities())
        {
            var status = GetStatus();

            var repIssue = new RepairIssue()
            {
                CreaterId = AuthorId,
                RepairItemDesc = this.txtDescription.Text,
                CreateDate = DateTime.Now,//here's the problem
                RepairIssueStatu = status
            };

            contxt.AddObject("RepairIssues", repIssue);
            contxt.SaveChanges();
        }

所述CREATEDATE属性映射到列哪种类型SMALLDATETIME.

如何让这段代码运行？

所有 python代码服务都可以安装但无法启动

Error 1053: The service did not respond to the start or control request in a timely fashion".

因为我的服务可以在我的服务器上安装和启动.我认为我的代码没有问题.

但我仍然想知道是否有一个解决方案,我可以在代码中解决这个错误

我的服务:

import win32serviceutil
import win32service
import win32event

import time
import traceback
import os

import ConfigParser
import time
import traceback
import os
import utils_func
from memcache_synchronizer import *

class MyService(win32serviceutil.ServiceFramework):
    """Windows Service."""
    os.chdir(os.path.dirname(__file__))
    conf_file_name = "memcache_sync_service.ini"
    conf_parser = ConfigParser.SafeConfigParser()
    conf_parser.read(conf_file_name)
    _svc_name_, _svc_display_name_, _svc_description_ = utils_func.get_win_service(conf_parser)

    def __init__(self, args):
        if os.path.dirname(__file__):
            os.chdir(os.path.dirname(__file__))
        win32serviceutil.ServiceFramework.__init__(self, args)

        # create an event that …

如果我将CapacityMinclass和unittest类放在相同的.py文件中,那么每件事都很好.但是在我将 CapacityMin类移到单独的文件并运行unit-test之后,我收到了这个错误:

期望的SQL表达式,列或映射实体

细节:

InvalidRequestError: SQL expression, column, or mapped entity expected - got '<module 'Entities.CapacityMin' from 'D:\trunk\AppService\Common\Entities\CapacityMin.pyc'>'

但这并不好.

CapacityMin.py:

import sqlalchemy
from sqlalchemy import *
from  sqlalchemy.ext.declarative  import  declarative_base

Base  =  declarative_base()

class  CapacityMin(Base):
    '''

    table definition:
        ID        INT NOT NULL auto_increment,
        Server    VARCHAR (20) NULL,
        FeedID    VARCHAR (10) NULL,
        `DateTime` DATETIME NULL,
        PeakRate  INT NULL,
        BytesRecv INT NULL,
        MsgNoSent INT NULL,
        PRIMARY KEY (ID)
    '''

    __tablename__  =  'capacitymin'

    ID  =  Column(Integer,  primary_key=True) …

描述:执行当前Web请求期间发生未处理的异常.请查看堆栈跟踪以获取有关错误及其源自代码的位置的更多信息.

异常详细信息:System.InvalidCastException:Object必须实现IConvertible.

来源错误:

Line 20:         public ActionResult Index()
Line 21:         {
Line 22:             var feeds = (from f in _db.AlertRules.Include("AlertRuleOutages")
Line 23:                          select f).ToList();
Line 24: 

堆栈跟踪:

[InvalidCastException: Object must implement IConvertible.]
   System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider) +9508841
   MySql.Data.Entity.EFMySqlDataReader.ChangeType(Object sourceValue, Type targetType) +376
   MySql.Data.Entity.EFMySqlDataReader.GetValue(Int32 ordinal) +129
   System.Data.Common.Internal.Materialization.ErrorHandlingValueReader`1.GetValue(DbDataReader reader, Int32 ordinal) +215
   lambda_method(Closure , Shaper ) +468
   System.Data.Common.Internal.Materialization.Shaper.HandleEntityAppendOnly(Func`2 constructEntityDelegate, EntityKey entityKey, EntitySet entitySet) +218
   lambda_method(Closure , Shaper ) +218
   System.Data.Common.Internal.Materialization.Coordinator`1.ReadNextElement(Shaper shaper) +170
   System.Data.Common.Internal.Materialization.RowNestedResultEnumerator.MoveNext() +235
   System.Data.Common.Internal.Materialization.ObjectQueryNestedEnumerator.TryReadToNextElement() +16
   System.Data.Common.Internal.Materialization.ObjectQueryNestedEnumerator.MoveNext() +57
   System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) …

我有一个Operation像这样的枚举类型：

[Flags]
public enum Operation
{
    None = 0,
    View = (1 << 0),
    Add = (1 << 1),
    Edit = (1 << 2),
    Delete = (1 << 3),
    ReservedA = (1 << 4),
    ReservedB = (1 << 5),
    Admin = (View | Add | Edit | Delete)
}

和表permission包含一operations列。该表映射到这样的类：

[Table("rolepermission")]
public class Permission : IComparable
{
    private int _id = 0;

    private Operation _operations = Operation.None;

    private List<UserRole> _roles = null;

    public Permission() …

我有一张这样的桌子

CREATE TABLE news
(
Id         INT NOT NULL auto_increment,
Headline   VARCHAR (255) NULL,
InDateTime   DATETIME NULL
)

如何获取每秒记录数(InDateTime)？

我正在使用 Mysql

样本记录:

578921,   'headline1', '8/20/2012 12:01:53 PM' 
578922,   'headline2', '8/20/2012 12:01:53 PM' 
578923,   'headline3', '8/20/2012 12:01:53 PM' 
578924,   'headline4', '8/20/2012 12:01:59 PM' 
578925,   'headline5', '8/20/2012 12:01:59 PM' 
578926,   'headline6', '8/20/2012 12:01:59 PM' 
578927,   'headline7', '8/20/2012 12:01:59 PM' 
578928,   'headline8', '8/20/2012 12:02:03 PM' 

预期产量:

time,                    count
'8/20/2012 12:01:53 PM', 3
'8/20/2012 12:01:59 PM', 4
'8/20/2012 12:02:03 PM', 1 

例外细节:

System.Data.SqlClient.SqlException:无法打开登录请求数据库"RealtyDB"登录失败.账号'FAFHN24BNK43\JKAD754'登录失败.

我的连接字符串如下所示:

add name = "ApplicationServices"
         connectionString="data source=.\SQLEXPRESS;User Instance=True;Initial Catalog=RealtyDB;Integrated Security=SSPI;"
         providerName="System.Data.SqlClient"       

如果我删除了[User Instance=True;],我的申请将没事.

有人知道为什么吗？

我已经清除了浏览器缓存，并重新启动了浏览器，但 Chrome 仍然返回304代码。

如何使 IIS 返回200代码？

请求响应详细信息：