C program, can export a table of sql2005 to a dbf file within a specified period of time every day

Create a process in IIS and let it execute it every night from 2 to 3 o'clock, and write the ** you want to operate in the executor of this process.

Write in the file.

Instantiate scheduling configurations.

schedulerconfiguration config = new schedulerconfiguration(3000 * 60);

Add a task. samplejob())

scheduler scheduler = new scheduler(config);

Create a threadstart delegate.

mythreadstart = new ;

Instantiate threads.

schedulerthread = new ;

Create another task class to perform backup database operations.

c 1) Connect to the database with a statement to select all the records to the dataset 2) Create a new dbf and insert it from the dataset.

3) Keep the file by date name.

Windows scheduled tasks.

Set the startup time.

Write a system service and use the system service to deal with it.

To provide an idea, delete the contents of the specified conditions, which must be included in the database. For example, within a specified time period, there must be a time field in the table designed to be deleted in the database (or through the associated table), and then the time obtained by the interface is compared, and within this time period, it is deleted, and it is not deleted. The directory tree is the same, just add one more condition.

Add a delete button to the page, and in the background method of the button, just execute the sql statement on the basis of the sql condition time you know the id in the tree, and you can connect it with (or) after you get it.

Try this line of thought:

If you monitor table A, write all IDs of table A to a checklist.

Create a table. create table a_checkupdate(aid int,binarychecksum int,remark varchar(50))

Insert the initial data from Table A into the Detection Update table.

insert into a_checkupdate select aid,binary_checksum(*)'' from a

You write a communication every once in a while, like 5 seconds to check.

Query the updated records in table a.

select * from a_checkupdate

where exists(

select aid from a where

and binary_checksum(*)a_

If you want to view the data of an insert or delete, check the A checkupdate for redundant IDs or missing IDs

select from a left join a_checkupdate on

where a_ is null

select a_checkupdate .id from a right join a_checkupdate on

where is null

SQL conversions to DBF files can be converted in the following three ways:

1. The dbase file already exists:

insert into

openrowset('','dbase iii;database=d:',select * from [*dbf]')

select * from

2. The SQL table file already exists

insert into select * fromopenrowset('','dbase iii;database=d:',select * from [*dbf]')

3. The SQL table file does not exist, and a new table is generated

select * into

openrowset('','dbase iii;database=d:',select * from [*dbf]')

Enterprise Manager - Database - All Tasks - Export.

1. SQL export dbf file (dbase file already exists):

insert into

openrowset('','dbase iii;database=d:', select * from [Example.] dbf]')

select * from

2. SQL import dbf file (SQL table file already exists):

insert into select * fromopenrowset('','dbase iii;database=d:', select * from [Example.] dbf]')

3. SQL import dbf file (SQL table file does not exist, generate a new table):

select * into a new table fromopenrowset('','dbase iii;database=d:', select * from [Example.] dbf]')

Select the table you want to go to, right-click, All Tasks, export data, the data source is the table you just selected, and select the export format when exporting.

It is recommended to create an ODBC connection first, so that it can be exported. DBF files are more convenient; Of course, you can also directly use the export data in the task reload to export.

Use timer to put it in cases where there are no special requirements, and it is best not to use threads, especially if you are new.

What are your needs for this to access the database every few minutes.

Whether you can create a cache pool for data. Store the data in these databases.

When the user uses to update, insert, or delete the database.

to update these cache pool data.

You can get the data from the cache pool on a regular basis. This eliminates the need for frequent reads to the database.

Hand-punched by 09:11

Write a thread and start a thread to schedule it to get or timer control (essentially the same).

tick event.

Then set enable

and interval interval

You're in Enterprise Manager.

Once the database is selected.

The right click has the import and export function.

Follow the prompts to export and you can bend it.

This database needs to be imported on a separate machine.

Guide Hu Li into the pants, this search is similar to export.

You can go and find out for yourself.

You don't need to export it. When you started building a database, where did you place your database? Just go to that place and copy the cut.

However, before copying, you need to right-click the missing point on the database you want to copy before the number of data files task detach or go offline, and then you can copy the database after success. The next time you want to use it, you can right-click on the database in the Dao software and attach it to the stupid file of your database.

Enterprise Manager.

The backup is the export database, and the additional is the import database.

Open the "Query Analyzer" in the enterprise manager, select the computer database you are connected to, "SQL Server User Travel Slip File Verification", enter the dismantling user name, SA, enter the password, and you can connect to the base connection.

Add a profile.

Date of documentation (2014-08-04).

Every time you open it, you won't do anything if you want to see if today's date is the same as this date.

If it's different, delete the database After deleting, change the configuration file to today's date, it's a bit messy, I don't know if you understand.

Write a Windows service, and automatically delete data in the early hours of every day;

Get the system time, and save it, for example, the time you take out today is 2014 8 4 Execute the delete statement, and save this time, and wait for the next time you start, interpret whether the system time is consistent with your current saving time, delete if it is inconsistent, and jump out if it is consistent;

What procedure? Console? winfrom?

webfrom?To write the right program based on your clear needs, why delete the data of the previous day? If you just want to delete it, you can execute the delete data command in the open event, and you don't need to judge whether it is the first time in the day, anyway, it is to delete yesterday's data, and after the first time you delete it for the second time, there will be no more yesterday's data

Just restore the database again. Write a script. It's a lot easier.

Please post your between statement for datetime.

select top 5000 *

from tabhourdata where inserttime between '2013-01-03 ' and '2013-01-05 ' order by inserttime

select * from tablename where Date Start Date and Date End Date.

You convert that date and then use between and