[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[],[],null,["# Cloud Firestore V1 Client - Class Operator (1.53.0)\n\nVersion latestkeyboard_arrow_down\n\n- [1.53.0 (latest)](/php/docs/reference/cloud-firestore/latest/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.52.0](/php/docs/reference/cloud-firestore/1.52.0/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.51.0](/php/docs/reference/cloud-firestore/1.51.0/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.50.0](/php/docs/reference/cloud-firestore/1.50.0/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.48.1](/php/docs/reference/cloud-firestore/1.48.1/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.47.3](/php/docs/reference/cloud-firestore/1.47.3/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.46.0](/php/docs/reference/cloud-firestore/1.46.0/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.45.2](/php/docs/reference/cloud-firestore/1.45.2/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.44.1](/php/docs/reference/cloud-firestore/1.44.1/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.43.3](/php/docs/reference/cloud-firestore/1.43.3/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.40.0](/php/docs/reference/cloud-firestore/1.40.0/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.39.0](/php/docs/reference/cloud-firestore/1.39.0/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.38.0](/php/docs/reference/cloud-firestore/1.38.0/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.37.7](/php/docs/reference/cloud-firestore/1.37.7/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.36.1](/php/docs/reference/cloud-firestore/1.36.1/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.35.0](/php/docs/reference/cloud-firestore/1.35.0/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.34.0](/php/docs/reference/cloud-firestore/1.34.0/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.33.0](/php/docs/reference/cloud-firestore/1.33.0/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.32.0](/php/docs/reference/cloud-firestore/1.32.0/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.31.0](/php/docs/reference/cloud-firestore/1.31.0/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.30.0](/php/docs/reference/cloud-firestore/1.30.0/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.28.0](/php/docs/reference/cloud-firestore/1.28.0/V1.StructuredQuery.UnaryFilter.Operator)\n- [1.27.3](/php/docs/reference/cloud-firestore/1.27.3/V1.StructuredQuery.UnaryFilter.Operator) \nReference documentation and code samples for the Cloud Firestore V1 Client class Operator.\n\nA unary operator.\n\nProtobuf type `google.firestore.v1.StructuredQuery.UnaryFilter.Operator`\n\nNamespace\n---------\n\nGoogle \\\\ Cloud \\\\ Firestore \\\\ V1 \\\\ StructuredQuery \\\\ UnaryFilter\n\nMethods\n-------\n\n### static::name\n\n### static::value\n\nConstants\n---------\n\n### OPERATOR_UNSPECIFIED\n\n Value: 0\n\nUnspecified. This value must not be used.\n\nGenerated from protobuf enum `OPERATOR_UNSPECIFIED = 0;`\n\n### IS_NAN\n\n Value: 2\n\nThe given `field` is equal to `NaN`.\n\nGenerated from protobuf enum `IS_NAN = 2;`\n\n### IS_NULL\n\n Value: 3\n\nThe given `field` is equal to `NULL`.\n\nGenerated from protobuf enum `IS_NULL = 3;`\n\n### IS_NOT_NAN\n\n Value: 4\n\nThe given `field` is not equal to `NaN`.\n\nRequires:\n\n- No other `NOT_EQUAL`, `NOT_IN`, `IS_NOT_NULL`, or `IS_NOT_NAN`.\n- That `field` comes first in the `order_by`.\n\nGenerated from protobuf enum `IS_NOT_NAN = 4;`\n\n### IS_NOT_NULL\n\n Value: 5\n\nThe given `field` is not equal to `NULL`.\n\nRequires:\n\n- A single `NOT_EQUAL`, `NOT_IN`, `IS_NOT_NULL`, or `IS_NOT_NAN`.\n- That `field` comes first in the `order_by`.\n\nGenerated from protobuf enum `IS_NOT_NULL = 5;`"]]