mysql delete command

Question

0.00/5 (No votes)

See more:

hi,

mysql delete command in single table no primary key for the table. i have inserted records for same id, same name for two records. i need to delete 1 record from the single table

id name
1 test
1 test

i need to delete one record

Posted 27-Jun-12 0:51am

devsuja

Add a Solution

Comments

Mohibur Rashid 2-Jul-12 2:22am

You better write an application from where you can identify the duplicate id and can delete except one

5 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

vangapally Naveen Kumar · Answer 1 · 2012-06-27T01:19:00

Solution 2

try like this

SQL

DELETE FROM Sample WHERE id=1 LIMIT 1;

or

SQL

DELETE FROM Sample WHERE id IN (SELECT id FROM Sample GROUP BY id HAVING COUNT(*) > 1) LIMIT 1

Posted 27-Jun-12 1:19am

vangapally Naveen Kumar

Updated 27-Jun-12 1:25am

v2

Comments

Mohibur Rashid 2-Jul-12 2:20am

Yup it is how to do it, but the second query wont work

Augustineonline · Answer 2 · 2012-06-27T01:00:00

Solution 1

Hi,
delete any one value in identical rows by using rownum.

Regards

Posted 27-Jun-12 1:00am

Augustineonline

Arjun YK · Answer 3 · 2012-07-01T21:45:00

Solution 5

SQL

delete from <table name=""> where <primarykey> = <string></string></primarykey></table>

Posted 1-Jul-12 21:45pm

Arjun YK

devsuja · Answer 4 · 2012-07-01T20:06:00

hi,

i have already tried for these type of queries

I t show the error message like this while using

DELETE FROM Sample WHERE id IN (SELECT id FROM Sample GROUP BY id HAVING COUNT(*) > 1) LIMIT 1

You can't specify target table 'i_t' for update in FROM clause

The inner query which shows the record 1 but we cannot use same table in inner and outer query

have u tried the query what u have send

AshishChaudha · Answer 5 · 2012-07-01T21:09:00

Solution 4

Please follow the steps:

1. select distinct rows from your table and
2. insert into a new temporary table.
3. Delete all the rows from your original table.
4. insert all the rows from temporary table to your original table.

Hope it work
Thanks

Posted 1-Jul-12 21:09pm

AshishChaudha