# Save Single/Multiple Records API

> Easily insert one or multiple database records with API Maker’s flexible save API—ideal for fast data creation and updates.

Source: https://docs.apimaker.dev/v1/examples/sys/db/gen/saveSingleOrMultipleGen.html

`g.sys.db.gen.saveSingleOrMultipleGen` calls the [save single or multiple generated API](https://docs.apimaker.dev/v1/docs/apis-all/generated-apis/auto-generated-save-single-or-multiple-api.html) from your code : no schema, the data as it is in the table.

## Structure

**Save single/multiple structure**

```typescript
let saveSingleOrMultiple = await g.sys.db.gen.saveSingleOrMultipleGen({
    instance: "INSTANCE_NAME", database: 'DB_NAME', collection: "COLLECTION_NAME",
    saveData: {
        "field1": "fieldValue1",
        "field2": "fieldValue2"
    }
});
```

## Save single or multiple

**Save single/multiple**

```typescript
let saveSingleOrMultiple = await g.sys.db.gen.saveSingleOrMultipleGen({
    instance: "mysql_8",
    database: "inventory",
    collection: "customers",
    saveData: {
        "first_name": "Bob",
        "last_name": "Lin"
    }
});
```

## Save single or multiple with multiple data

**Save single/multiple**

```typescript
let saveSingleOrMultiple = await g.sys.db.gen.saveSingleOrMultipleGen({
    instance: "mysql_8",
    database: "inventory",
    collection: "customers",
    saveData: [{
        "first_name": "Bob",
        "last_name": "Lin"
    },
    {
        "first_name": "Alice",
        "last_name": "Page"
    }]
});
```

## with header

**Save single/multiple with header**

```typescript
let saveSingleOrMultiple = await g.sys.db.gen.saveSingleOrMultipleGen({
    instance: "mysql_8",
    database: "inventory",
    collection: "customers",
    saveData: {
        "first_name": "Bob",
        "last_name": "Lin"
    },
    headers: {
        "x-am-response-case": "capitalCase"
    }
});
```

## Multi-tenant
- `instance: "crm::acme"` works on the database of the tenant `acme` of the [multi-tenant](https://docs.apimaker.dev/v1/docs/features/multi-tenant.html) instance `crm`.
- With `instance: "crm"`, the call works on the database of the tenant of the request: a custom API called with the [x-am-tenant-username](https://docs.apimaker.dev/v1/docs/apis-all/header/requestHeader.html#x-am-tenant-username) header passes it on to the APIs it calls. A request without a tenant works on the structure database.

**Save a customer of the tenant acme**

```typescript
let saveSingleOrMultiple = await g.sys.db.gen.saveSingleOrMultipleGen({
    instance: "crm::acme", database: "crm", collection: "customers",
    saveData: {
        "first_name": "Bob",
        "last_name": "Lin"
    }
});
```

## Related

- [Save single or multiple generated API](https://docs.apimaker.dev/v1/docs/apis-all/generated-apis/auto-generated-save-single-or-multiple-api.html) · [Schema API from code](https://docs.apimaker.dev/v1/examples/sys/db/saveSingleOrMultiple.html) · [The global object g](https://docs.apimaker.dev/v1/docs/pre-defined-terms/global-object-g.html)