phpmyAdminを使用してデータベーステーブルまたは列にコメントを追加するにはどうすればよいですか？

Yes, you can add comments to both tables and columns in phpMyAdmin. 1. To add a table comment, open the table's structure page, click the "Operations" tab, enter your comment in the "Table comment" field, and click "Go". 2. To add column comments, go to the table structure page, locate the "Comment" dropdown next to each column, type your explanation directly into the box, and click "Save". These comments appear when viewing the table structure, in tooltips (depending on theme), and during schema exports or SHOW CREATE TABLE queries. Ensure your MySQL version supports comments, use clear language, and remember that these comments are valuable for team collaboration and future reference.

Yes, you can definitely add comments to both tables and columns in phpMyAdmin — and it’s pretty straightforward once you know where to look. The feature is built into MySQL (starting from certain versions), and phpMyAdmin provides a user-friendly way to access it.

Here’s how to do it without any hassle.

How to Add Comments to a Table

If you want to leave a note or description about what the table is for — like "Stores customer order history" — here's where to put that:

1. Open phpMyAdmin and select the database.
2. Click on the table name to open its structure.
3. At the top of the page, you’ll see a tab labeled "Operations" — click that.
4. In the "Table comment" field, type your comment.
5. Scroll down and click "Go" to save.

That’s all you need to do. Now when someone views this table, they’ll have context just by looking at its properties.

Adding Comments to Individual Columns

This is especially useful if your column names aren’t super obvious — like cust_stat instead of "Customer Status".

To add a comment to a column:

• Go to the table's structure page (click the table name).
• You’ll see a list of columns with details like type, length, attributes, etc.
• Look for the "Comment" dropdown next to each column — yes, it’s a dropdown menu with common options like “foreign key”, but you can also type your own custom comment directly into the box.
• Enter your explanation (e.g., “0 = inactive, 1 = active”).
• Click "Save" at the bottom.

This works whether you’re editing an existing column or creating a new one.

Where Do These Comments Show Up?

Once added, these comments will appear in several places:

• When viewing the table structure
• In the tooltip when hovering over the column name (in some themes or setups)
• If you export the schema using phpMyAdmin or run a SHOW CREATE TABLE query

They don’t show up by default in the actual data rows, but tools like ORMs or documentation generators often read and use them automatically.

A Few Things to Keep in Mind

• Make sure your MySQL version supports column/table comments — most modern versions do.
• Use clear, concise language. Think of it as labeling a folder so anyone can understand it later.
• These comments are great for team environments or when handing off a project.

You won’t regret adding them — especially six months later when you or someone else needs to make sense of the schema.

That’s basically how it works. Not complicated, but really helpful once you get into the habit.

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