如何在phpmyadmin表中删除多个主键？

Question

I am working with phpmyadmin.I created a table with one primary key and 5 fields. But now all the integer fields have turned into a primary key. I tried using drop command but it doesn't help. How can I remove all primary keys from the table?

Answer 1

Just open up the Structure tab on your phpmyadmin table. After the structure description, there should be a Indexes section where you'll see all indexes, including your primary keys. There you'll be able to either modify or remove any primary key you may have defined.

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Answer 2

Try this

ALTER TABLE tablename MODIFY fieldname INT NOT NULL;
ALTER TABLE tablename DROP PRIMARY KEY;

Answer 3

Here, i will tell you the Steps to do:

Step 1: Go to the Relation View.

Step 2: Indexes.

Step 3: You will find Keyname as PRIMARY.

Step 4: Drop the PRIMARY

Step 5: Ok.

Thanks.

Here all the Steps images, you can follow it for your easy.

Answer 4

您可能已将列索引为FOREIGN KEY，在此cas中您应删除此索引，然后您将能够修改或删除您的PRIMARY KEY。