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InsertPromise<T, J>

The InsertPromise class provides a chainable interface for configuring INSERT operations for bulk record insertion. It extends Promise, allowing you to await it directly or chain configuration methods.

Returned by: SurrealQueryable.insert()

Source: query/insert.ts

Type Parameters

  • T - The result type

  • J - Boolean indicating if result is JSON (default: false)

Configuration Methods

.relation()

Configure the insert to work with relation (edge) records instead of regular records.

Method Syntax

insertPromise.relation()

Returns

InsertPromise<T, J> - Chainable promise

Example

const edges = await db.insert([
    {
        id: new RecordId('likes', '1'),
        in: new RecordId('users', 'john'),
        out: new RecordId('posts', '1')
    }
]).relation();

.ignore()

Ignore records that already exist (skip duplicates without error).

Method Syntax

insertPromise.ignore()

Returns

InsertPromise<T, J> - Chainable promise

Example

const users = await db.insert([
    { id: new RecordId('users', 'john'), name: 'John' },
    { id: new RecordId('users', 'jane'), name: 'Jane' }
]).ignore();
// If 'john' exists, it's skipped; 'jane' is inserted

.output()

Specify which fields to return in the response.

Method Syntax

insertPromise.output(fields)

Parameters

ParameterTypeDescription
fields Output"NONE", "AFTER", or specific field list.

Returns

InsertPromise<T, J> - Chainable promise

Examples

Return Specific Fields

const users = await db.insert(userData)
    .output('id', 'name');
// Returns only id and name

Return Nothing

await db.insert(logData)
    .output('NONE');
// No return value, useful for performance

.timeout()

Set a timeout for the operation.

Method Syntax

insertPromise.timeout(duration)

Parameters

ParameterTypeDescription
duration DurationMaximum time to wait.

Returns

InsertPromise<T, J> - Chainable promise

.version()

Insert at a specific version (for versioned storage engines).

Method Syntax

insertPromise.version(timestamp)

Parameters

ParameterTypeDescription
timestamp DateTimeThe version timestamp.

Returns

InsertPromise<T, J> - Chainable promise

.json()

Return result as JSON string.

Method Syntax

insertPromise.json()

Returns

InsertPromise<T, true> - Promise returning JSON string

.stream()

Stream results as records are inserted.

Method Syntax

insertPromise.stream()

Returns

AsyncIterableIterator - Async iterator

Complete Examples

Basic Insertion

import { Surreal, RecordId } from 'surrealdb';

const db = new Surreal();
await db.connect('ws://localhost:8000');

// Insert single record
const user = await db.insert({
    id: new RecordId('users', 'alice'),
    name: 'Alice',
    email: 'alice@example.com'
});

// Insert multiple records
const users = await db.insert([
    { id: new RecordId('users', 'bob'), name: 'Bob' },
    { id: new RecordId('users', 'carol'), name: 'Carol' }
]);

Insert into Table

// Let database generate IDs
const users = await db.insert(new Table('users'), [
    { name: 'Dave', email: 'dave@example.com' },
    { name: 'Eve', email: 'eve@example.com' }
]);

Ignore Duplicates

// Skip existing records without error
const users = await db.insert([
    { id: new RecordId('users', 'john'), name: 'John' },
    { id: new RecordId('users', 'jane'), name: 'Jane' }
]).ignore();

console.log(`Inserted ${users.length} new users`);

Bulk Insert with Streaming

const largeDataset = generateThousandsOfRecords();

let count = 0;
for await (const record of db.insert(largeDataset).stream()) {
    count++;
    if (count % 100 === 0) {
        console.log(`Inserted ${count} records`);
    }
}

Insert Relations (Edges)

const likes = await db.insert([
    {
        id: new RecordId('likes', '1'),
        in: new RecordId('users', 'john'),
        out: new RecordId('posts', '1'),
        created_at: DateTime.now()
    },
    {
        id: new RecordId('likes', '2'),
        in: new RecordId('users', 'jane'),
        out: new RecordId('posts', '1'),
        created_at: DateTime.now()
    }
]).relation();

Optimized Insertion

// Don't wait for return values
await db.insert(logEntries)
    .output('NONE');
// Faster execution when you don't need the results

Insert with Timeout

const users = await db.insert(largeDataset)
    .timeout(Duration.parse('30s'));

Error Handling

try {
    const users = await db.insert([
        { id: new RecordId('users', 'existing'), name: 'Test' }
    ]);
} catch (error) {
    if (error instanceof ResponseError) {
        console.error('Duplicate key error:', error.message);
        
        // Retry with ignore
        const users = await db.insert([
            { id: new RecordId('users', 'existing'), name: 'Test' }
        ]).ignore();
    }
}

Batch Processing

const BATCH_SIZE = 100;
const allUsers = [...]; // Large array

for (let i = 0; i < allUsers.length; i += BATCH_SIZE) {
    const batch = allUsers.slice(i, i + BATCH_SIZE);
    await db.insert(batch);
    console.log(`Inserted batch ${i / BATCH_SIZE + 1}`);
}

vs CREATE

When to use INSERT vs CREATE

// CREATE: For single records, with more configuration options
const user = await db.create(new RecordId('users', 'john'))
    .content(userData);

// INSERT: For bulk operations, optimized for performance
const users = await db.insert([
    { id: new RecordId('users', 'alice'), ...data1 },
    { id: new RecordId('users', 'bob'), ...data2 },
    { id: new RecordId('users', 'carol'), ...data3 }
]);

Chaining Pattern

const result = await db.insert(records)
    .ignore()
    .output('id', 'name')
    .timeout(Duration.parse('10s'));

See Also

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