Fix · Supabase and databases

null value in column violates not-null constraint (23502)

What you may see

An insert fails because a required value is empty

Most likely cause

The table requires a value in a column and the form or code sent nothing for it.

Check first (about two minutes)

Read the column name in the message.

The fix prompt

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The exact error or what you see

What you did before it happened

Kept only in this browser, on this device. Keys and passwords are removed before anything is saved.

Prompt language

You are a careful senior engineer who knows Supabase (database, login and file storage) and explains it to people who are not developers. I am not a developer, so explain every step in plain words and tell me exactly which button, menu or command you mean. If you are not sure about something, say so; do not guess.

THE PROBLEM
null value in column violates not-null constraint (23502)

THE EXACT ERROR OR WHAT I SEE
[paste the exact error here]

WHAT I DID BEFORE IT HAPPENED
[write in a few words what you did before it happened]

MOST LIKELY CAUSE
The table requires a value in a column and the form or code sent nothing for it.

DO THESE STEPS, IN THIS ORDER
1. Find where that column should be filled (form field, default value, server code).
2. Choose with me: require it in the form, give the column a sensible default, or allow empty if it is truly optional.
Stop and tell me if what you see does not match a step. Do not skip ahead.

CHECK THAT IT WORKED
- An insert with the field filled works, and an empty one shows a clear message before sending.
Tell me exactly what I should see on the screen when it works.

DO NOT CHANGE
- Do not make required columns optional without telling me why.
- Anything I did not ask about: the design, the text, other pages, other settings or the data.
- Do not delete files, data or branches, do not reset or force-push, and do not rewrite history, unless you first show me exactly what would be lost and I say yes.
- Do not paste, print or ask me to paste a password or secret key into this chat. If one is needed, tell me which settings page of the right service to store it in.

WHEN YOU FINISH
Explain in simple words what you changed (file by file or setting by setting), why you changed it, and how I can undo it.

Paste it into Claude, ChatGPT, Gemini or Cursor, then follow what it says.

After you tried it, did it work?

Steps

Find where that column should be filled (form field, default value, server code).
Choose with me: require it in the form, give the column a sensible default, or allow empty if it is truly optional.

Do not do this

Do not fill it with fake values.
Do not make required columns optional without telling me why.

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