1. Select any cell in the form, data - delete duplicate items;
  2. Tick the relevant options. The following chart is selected. Click all or select all columns to indicate that all duplication is deleted;
  3. After confirmation, we will see that duplicate items have been deleted and only duplicate items remain.
    I hope this can help you.
  1. According to the location of the website: that is to say, locate the keywords of the website, so that others can find our website better.
  2. Update website content: the website needs to update some new contents every day, so as to improve user experience and search engines to capture more pages.
  3. Station anchor text: through the station anchor text to link the links between web pages, this can enhance the weight of long tail words.
  4. Link exchange: we need to constantly find some websites that share the same web site and have the same weight.
    5: External chain release: every day some external chain can be released to the website drainage. The premise is the high quality of the outer chain.

The computer's death is generally the following three cases:
There is no response to the failure of the main board. Most of the main board after the power supply, even if there is no boot, the main board on the indicator light will rise, if not bright, first check whether it is a power connection or the problem of power itself. In particular, the motherboard 24Pin interface and CPU power supply line interface must be firmly inserted.
The main board lights but can not start. One of the situation is the main board light, indicating that the power has output, but still can not start, this need to check more things, but first did not enter the main board to start self inspection, it is possible to open the key and the BIOS problem.
Check the memory before the start and the beep. Normal boot players will hear a "drop", but if the sound of a buzzing or always "dropping..." is usually caused by a bad contact between the memory bar and the main board memory slot. As long as you rub it back and forth with the gold finger part, you can solve the problem. Of course, the memory slot on the motherboard is broken, which is also possible.

select TOP 11 column 1,column 1 from table name
where id='0000'
group by column 1,column 2
order by id

Inserting data into the database