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Original file line number Diff line number Diff line change
Expand Up @@ -2132,6 +2132,7 @@ export const deployment: NavMenuConstant = {
name: 'Environments',
items: [
{ name: 'Managing environments', url: '/guides/deployment/managing-environments' },
{ name: 'Database migrations', url: '/guides/deployment/database-migrations' },
{ name: 'Branching', url: '/guides/deployment/branching' },
],
},
Expand Down
257 changes: 257 additions & 0 deletions apps/docs/content/guides/deployment/database-migrations.mdx
Original file line number Diff line number Diff line change
@@ -0,0 +1,257 @@
---
id: 'database-migrations'
title: 'Database Migrations'
description: 'How to manage schema migrations for your Supabase project.'
subtitle: 'How to manage schema migrations for your Supabase project.'
video: 'https://www.youtube-nocookie.com/v/vyHyYpvjaks'
tocVideo: 'vyHyYpvjaks'
---

Database schema changes are managed through "migrations". Database migrations are a common way of tracking changes to your database over time.

## Schema migrations

For this guide, we'll create a table called `employees` and see how we can make changes to it.

<StepHikeCompact>

<StepHikeCompact.Step step={1}>
<StepHikeCompact.Details title="Create your first migration file">

To get started, generate a [new migration](/docs/reference/cli/supabase-migration-new) to store the SQL needed to create our `employees` table.

</StepHikeCompact.Details>

<StepHikeCompact.Code>

```bash
supabase migration new create_employees_table
```

</StepHikeCompact.Code>

</StepHikeCompact.Step>
</StepHikeCompact>

<StepHikeCompact>

<StepHikeCompact.Step step={2}>
<StepHikeCompact.Details title="Add the SQL to your migration file">
This creates a new migration: supabase/migrations/\<timestamp\>
_create_employees_table.sql.

To that file, add the SQL to create this `employees` table
</StepHikeCompact.Details>

<StepHikeCompact.Code>

```sql
create table employees (
id bigint primary key generated always as identity,
name text,
email text,
created_at timestamptz default now()
);
```

</StepHikeCompact.Code>

</StepHikeCompact.Step>
</StepHikeCompact>

<StepHikeCompact>

<StepHikeCompact.Step step={3}>
<StepHikeCompact.Details title="Apply your migration">
Now that you have a migration file, you can run this migration and create the `employees` table.

Use the `reset` command here to reset the database to the current migrations
</StepHikeCompact.Details>

<StepHikeCompact.Code>

```bash
supabase db reset
```

</StepHikeCompact.Code>

</StepHikeCompact.Step>
</StepHikeCompact>

<StepHikeCompact>

<StepHikeCompact.Step step={4}>
<StepHikeCompact.Details title="Modify your employees table">
Now you can visit your new `employees` table in the Dashboard.

Next, modify your `employees` table by adding a column for department. Create a new migration file for that.
</StepHikeCompact.Details>

<StepHikeCompact.Code>

```bash
supabase migration new add_department_to_employees_table
```

</StepHikeCompact.Code>

</StepHikeCompact.Step>
</StepHikeCompact>

<StepHikeCompact>

<StepHikeCompact.Step step={5}>
<StepHikeCompact.Details title="Add a new column to your table">
This creates a new migration file: supabase/migrations/\<timestamp\>
_add_department_to_employees_table.sql.

To that file, add the SQL to create a new department column
</StepHikeCompact.Details>

<StepHikeCompact.Code>

```sql
alter table if exists public.employees
add department text default 'Hooli';
```

</StepHikeCompact.Code>

</StepHikeCompact.Step>
</StepHikeCompact>

### Add sample data

Now that you are managing your database with migrations scripts, it would be great have some seed data to use every time you reset the database.

For this, you can create a seed script in `supabase/seed.sql`.

<StepHikeCompact>

<StepHikeCompact.Step step={1}>
<StepHikeCompact.Details title="Populate your table">
Insert data into your `employees` table with your `supabase/seed.sql` file.
</StepHikeCompact.Details>

<StepHikeCompact.Code>

```sql
insert into public.employees
(name)
values
('Erlich Bachman'),
('Richard Hendricks'),
('Monica Hall');
```

</StepHikeCompact.Code>

</StepHikeCompact.Step>
</StepHikeCompact>

<StepHikeCompact>

<StepHikeCompact.Step step={2}>
<StepHikeCompact.Details title="Reset your database">
Reset your database (apply current migrations), and populate with seed data
</StepHikeCompact.Details>

<StepHikeCompact.Code>

```bash
supabase db reset
```

</StepHikeCompact.Code>

</StepHikeCompact.Step>
</StepHikeCompact>

You should now see the `employees` table, along with your seed data in the Dashboard! All of your database changes are captured in code, and you can reset to a known state at any time, complete with seed data.

### Diffing changes

This workflow is great if you know SQL and are comfortable creating tables and columns. If not, you can still use the Dashboard to create tables and columns, and then use the CLI to diff your changes and create migrations.

Create a new table called `cities`, with columns `id`, `name` and `population`. To see the corresponding SQL for this, you can use the `supabase db diff --schema public` command. This will show you the SQL that will be run to create the table and columns. The output of `supabase db diff` will look something like this:

```
Diffing schemas: public
Finished supabase db diff on branch main.

create table "public"."cities" (
"id" bigint primary key generated always as identity,
"name" text,
"population" bigint
);

```

Alternately, you can view your table definitions directly from the Table Editor:

![SQL Definition](/docs/img/guides/cli/sql-definitions.png)

You can then copy this SQL into a new migration file, and run `supabase db reset` to apply the changes.

The last step is deploying these changes to a live Supabase project.

## Deploy your project

You've been developing your project locally, making changes to your tables via migrations. It's time to deploy your project to the Supabase Platform and start scaling up to millions of users! Head over to [Supabase](https://supabase.com/dashboard) and create a new project to deploy to.

### Log in to the Supabase CLI

<CH.Code>

```bash Terminal
supabase login
```

```bash npx
npx supabase login
```

</CH.Code>

### Link your project

Associate your project with your remote project using [`supabase link`](/docs/reference/cli/usage#supabase-link).

```bash
supabase link --project-ref <project-id>
# You can get <project-id> from your project's dashboard URL: https://supabase.com/dashboard/project/<project-id>

supabase db pull
# Capture any changes that you have made to your remote database before you went through the steps above
# If you have not made any changes to the remote database, skip this step
```

`supabase/migrations` is now populated with a migration in `<timestamp>_remote_schema.sql`.
This migration captures any changes required for your local database to match the schema of your remote Supabase project.

Review the generated migration file and once happy, apply the changes to your local instance:

```bash
# To apply the new migration to your local database:
supabase migration up

# To reset your local database completely:
supabase db reset
```

<Admonition type="note">

There are a few commands required to link your project. We are in the process of consolidating these commands into a single command. Bear with us!

</Admonition>

### Deploy database changes

Deploy any local database migrations using [`db push`](/docs/reference/cli/usage#supabase-db-push):

```sh
supabase db push
```

Visiting your live project on [Supabase](https://supabase.com/dashboard), you'll see a new `employees` table, complete with the `department` column you added in the second migration above.
Original file line number Diff line number Diff line change
Expand Up @@ -41,8 +41,11 @@ const TemplateEditor = ({ template }: TemplateEditorProps) => {
onSuccess: (res) => setValidationResult(res),
})

const { mutate: updateAuthConfig, isLoading: isUpdatingConfig } = useAuthConfigUpdateMutation({
onError: (error) => toast.error(`Failed to update email templates: ${error.message}`),
const { mutate: updateAuthConfig } = useAuthConfigUpdateMutation({
onError: (error) => {
setIsSavingTemplate(false)
toast.error(`Failed to update email templates: ${error.message}`)
},
})

const { id, properties } = template
Expand All @@ -66,31 +69,61 @@ const TemplateEditor = ({ template }: TemplateEditorProps) => {
const [validationResult, setValidationResult] = useState<ValidateSpamResponse>()
const [bodyValue, setBodyValue] = useState((authConfig && authConfig[messageSlug]) ?? '')
const [hasUnsavedChanges, setHasUnsavedChanges] = useState(false)
const [isSavingTemplate, setIsSavingTemplate] = useState(false)

// eslint-disable-next-line react-hooks/exhaustive-deps
const debounceValidateSpam = useCallback(debounce(validateSpam, 1000), [])
const spamRules = (validationResult?.rules ?? []).filter((rule) => rule.score > 0)
const preventSaveFromSpamCheck = builtInSMTP && spamRules.length > 0

const onSubmit = (values: any, { resetForm }: any) => {
if (!projectRef) return console.error('Project ref is required')

setIsSavingTemplate(true)
const payload = { ...values }

// Because the template content uses the code editor which is not a form component
// its state is kept separately from the form state, hence why we manually inject it here
delete payload[messageSlug]
if (messageProperty) payload[messageSlug] = bodyValue

updateAuthConfig(
{ projectRef: projectRef!, config: payload },
const [subjectKey] = Object.keys(properties)

validateSpam(
{
onSuccess: () => {
toast.success('Successfully updated settings')
resetForm({
values: values,
initialValues: values,
})
setHasUnsavedChanges(false) // Reset the unsaved changes state
projectRef,
template: {
subject: payload[subjectKey],
content: payload[messageSlug],
},
},
{
onSuccess: (res) => {
const spamRules = (res?.rules ?? []).filter((rule) => rule.score > 0)
const preventSaveFromSpamCheck = builtInSMTP && spamRules.length > 0

if (preventSaveFromSpamCheck) {
setIsSavingTemplate(false)
toast.error(
'Please rectify all spam warnings before saving while using the built-in email service'
)
} else {
updateAuthConfig(
{ projectRef: projectRef, config: payload },
{
onSuccess: () => {
setIsSavingTemplate(false)
toast.success('Successfully updated settings')
resetForm({
values: values,
initialValues: values,
})
setHasUnsavedChanges(false) // Reset the unsaved changes state
},
}
)
}
},
onError: () => setIsSavingTemplate(false),
}
)
}
Expand Down Expand Up @@ -164,14 +197,6 @@ const TemplateEditor = ({ template }: TemplateEditorProps) => {
</ReactMarkdown>
) : null
}
onChange={(e) => {
if (projectRef) {
debounceValidateSpam({
projectRef,
template: { subject: e.target.value, content: bodyValue },
})
}
}}
disabled={!canUpdateConfig}
/>
</div>
Expand Down Expand Up @@ -219,14 +244,6 @@ const TemplateEditor = ({ template }: TemplateEditorProps) => {
onInputChange={(e: string | undefined) => {
setBodyValue(e ?? '')
if (bodyValue !== e) setHasUnsavedChanges(true)

if (projectRef) {
const [subjectKey] = Object.keys(values)
debounceValidateSpam({
projectRef,
template: { subject: values[subjectKey], content: e ?? '' },
})
}
}}
options={{ wordWrap: 'on', contextmenu: false }}
value={bodyValue}
Expand Down Expand Up @@ -257,9 +274,9 @@ const TemplateEditor = ({ template }: TemplateEditorProps) => {
setBodyValue((authConfig && authConfig[messageSlug]) ?? '')
}}
form={formId}
isSubmitting={isUpdatingConfig}
isSubmitting={isSavingTemplate}
hasChanges={hasChanges}
disabled={preventSaveFromSpamCheck || !canUpdateConfig}
disabled={!canUpdateConfig}
helper={
preventSaveFromSpamCheck
? 'Please rectify all spam warnings before saving while using the built-in email service'
Expand Down
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