This table does not contain a unique column Grid edit checkbox Edit Copy and Delete features are not available

Question

The error generated in phpMyAdmin is   This table does not contain a unique column  Grid edit  checkbox  Edit  Copy and Delete features are not available   What does this error message mean and how can I fix it

User · Answer

My case is different   This issue is only specific to PHPMyAdmin  I downloaded couple other admin tools  Adminer  MySQLWorkbench  HeidiSQL etc  and the same db works fine in all of those   I have all the indexes  primary key and unique keys defined and still get the error  I get this after I upgraded to MySQL 5 6  did not face the same with the previous versions      Turns out PMA has issues with Table names in capital   PMA is not able to recognise keys with capital table names  Once I change them to small  ALTER TABLE mytable ENGINE INNODB -- I use INNODB -- does that for each table without changing anything else   I was able to access normally  I m on a Windows system with UniformServer

User · Answer

This is how you get rid of that notice and be able to open those grid cells for edit  1  click  STRUCTURE    2  go to the field you want to be a primary key  and this usually is the 1st one   and then click on the  PRIMARY  and  INDEX  fields for that field and accept the PHPMyadmin s pop-up question  OK     3  pad yourself in the back

User · Answer

Adding this in the config inc php file worked for me  under the last  cfg line     cfg  RowActionLinksWithoutUnique      true    The file should be located in the phpMyAdmin folder on your local computer

User · Answer

This is not an error  PhpMyAdmin is just informing you  that there is no unique ID column in your result set  Depending on the type of query you sent  this is the desired behaviour   It is not MySQL which is saying it needs a unique ID  if any combination of the columns in your result set is unique  the values of those columns can be used in an UPDATE or DELETE query  It is phpMyAdmin which says it does not have enough information to offer you the checkboxes and buttons you will normally see in a result set with unique ID

User · Answer

I faced the same problem whenever i am firing SELECT query with specific columns  though the one of the column is primary in table  I was trying to fetch selective records with selective columns in standard wordpress  posts  table  ID column is already primary and unique       Just specifying primary unique column name will not resolve this issue  You have to specify full column name like  posts id   tablename columnname  that tells PMA to select specific column and reveals edit etc     My PMA is 4 3 8  Let me know if this helps

User · Answer

I have been faced this problem   The cause is your table don t have a primary key field   And I have a simple solution  Set a field to primary key to specific filed that suit with your business logic  For example  I have database thesis db and field thesis id  I will press button Primary  key icon  to set thesis id to become primary key field

User · Answer

the code that worked for me  ALTER TABLE  table name  ADD COLUMN  id  INT NOT NULL AUTO INCREMENT  ADD PRIMARY KEY   id

User · Answer

This question helped me identify the problem of why phpMyAdmin refused me grid-edit-etc  on some tables  I just had forgotten to declare my primary key and was overseeing it in my   Why the hell should this table be different from its neighbours  solution search process     I just wanted to react on following in OP self-answer        The other table had multiple AI int values that were the Primary   field  but there were multiple values of the same kind       The simple fix for this was to just add a column to the end of the   table as Unique AI Int  Basically all MySQL is saying is it needs a   unique value in each record to differentiate the rows    This was actually my case  but there s absolutely no need to add any column  if your primary key is the combination of 2 fields  ex  junction table in many to many relationship   then simply declare it as such  - eiter in phpyAdmin  just enter  2  in  Create an index on  x  columns   then select your 2 columns - or ALTER TABLE mytable ADD PRIMARY KEY mycol1 mycol2

User · Answer

In my case  the error occured in phpmyadmin version 4 5 1 when i set lower case table names   2 and had a table name with uppercase characters  The table had a primary key set to auto increment but still showed the error  The issue stopped when i changed the table name to all lowercase

User · Answer

I recently got the same problem and after looking for duplicates I was able to fix it just by setting  missing  primary key on the table  Hope this could help

User · Answer

This for sure is an old topic but I want to add up to the voices to crop maybe new ideas  To address the WARNING issue under discussions  all you need to do is to set one of your table columns to a PRIMARY KEY constraint

User · Answer

An easy fix to this would be going to the SQL tab and just simply put in the code   ALTER TABLE  tablename  ADD PRIMARY KEY   id      Asuming that you have a row named id

User · Answer

I have been faced with this problem  The cause is your table doesn t have a primary key field  And I have a simple solution  Set a field to primary key to specific field that suits your business logic  For example  I have database thesis db and field thesis id  I will press button Primary  key icon  to set thesis id to become primary key field

User · Answer

I got this error when trying to modify directly after running Query  Turns out  after making a view from that exact same query  I was able to modify the values

User · Answer

Simply create a new column  set the Name to whatever you like  set the Type to INT and check the box that says A I    The A I checkbox stands for AUTO INCREMENT  which essentially means that sequence numbers are assigned automatically in that new column  see below      column1   column2   id -----------------------  value     value     1 -----------------------  value     value     2 -----------------------  value     value     3 -----------------------  value     value     4   This column essentially acts as a reference for phpMyAdmin to delete rows from  If necessary  click on the unique button for this new column  although this happened automatically for me  After following the above steps  you should no longer have the error message and buttons should appear for editing rows in phpMyAdmin

User · Answer

This for me was resolved by re-exporting the data from original source DB and then importing it into the mirror DB

User · Answer

Make sure all your tables have one primary key  I forgot to add a primary key to one table and that solved this problem for me

[phpmyadmin] This table does not contain a unique column. Grid edit, checkbox, Edit, Copy and Delete features are not available

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