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A simple GROUP BY should do it. 
<pre><code id="code-20-40092379-1"> heath3_mt_cfvalues
SELECT cf_id, link_id, value, attachment, counter, Check FROM heath3_mt_cfvalues GROUP BY cf_id, link_id;</code></pre>
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A simple GROUP BY should do it.

 heath3_mt_cfvalues
SELECT cf_id, link_id, value, attachment, counter, Check FROM heath3_mt_cfvalues GROUP BY cf_id, link_id;

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Brilliant, I take my hat off to you :)
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Thanks but I don't deserve that credit. Happy to help. Cheers, Paul
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Thanks but I don't deserve that credit. Happy to help. Cheers, Paul

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<div class="content wysiwyg-content">
Hi, 
 
I have a table heath3_mt_cfvalues that I need to de-dup data on, based on a combination of keys link_id and cf_id. 
 
I have managed to find and remove duplicates that have a different `value` field contents. I now want to remove duplicates but leave one unique value on combination of keys &nbsp;link_id and cf_id for each instance. What would be the query syntax to achieve this? 
 
Table = heath3_mt_cfvalues 
id PK int(11) 
cf_id int(11) 
link_id &nbsp;int(11) 
value mediumtext 
attachment int(10) 
counter int(11) 
Check field text 
 
<a href="https://www.experts-exchange.com/questions/28441559/Find-duplicates-for-combination-of-two-columns-in-a-MySQL-database.html" rel="ugc">My previous question: &nbsp;Find duplicates for combination of two columns in a MySQL database</a>
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Hi,

I have a table heath3_mt_cfvalues that I need to de-dup data on, based on a combination of keys link_id and cf_id.

I have managed to find and remove duplicates that have a different `value` field contents. I now want to remove duplicates but leave one unique value on combination of keys  link_id and cf_id for each instance. What would be the query syntax to achieve this?

Table = heath3_mt_cfvalues
id PK int(11)
cf_id int(11)
link_id  int(11)
value mediumtext
attachment int(10)
counter int(11)
Check field text

My previous question:  Find duplicates for combination of two columns in a MySQL database (https://www.experts-exchange.com/questions/28441559/Find-duplicates-for-combination-of-two-columns-in-a-MySQL-database.html)

Remove duplicates but keep one for combination of two columns in MySQL

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Databases

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MySQL Server

SQL (Structured Query Language) is designed to be used in conjunction with relational database products as of a means of working with sets of data. SQL consists of data definition, data manipulation, and procedural elements. Its scope includes data insert, query, update and delete, schema creation and modification, and data access control.