stratadb / ExistenceOperator

Type Alias: ExistenceOperator

type ExistenceOperator = object;

Defined in: src/query-types.ts:245

Existence operators for checking field presence.

Remarks

Allows checking whether a field exists in a document, regardless of its value. This is useful for distinguishing between missing fields and fields with null values.

Example

// Check if field exists (even if null)
const hasEmail = { email: { $exists: true } };

// Check if field is missing
const noPhone = { phone: { $exists: false } };

// Combined with other operators
const activeUsersWithEmail = {
  status: 'active',
  email: { $exists: true, $ne: null }
};

Properties

$exists?

readonly optional $exists: boolean;

Defined in: src/query-types.ts:247

Field exists in document (true) or doesn't exist (false)