比較関数のリファレンス
比較関数
| 名前 | 説明 |
EQUAL
|
等価比較 |
GREATER_THAN
|
より大きい比較 |
GREATER_THAN_OR_EQUAL
|
以上比較 |
LESS_THAN
|
より小さい比較 |
LESS_THAN_OR_EQUAL
|
以下比較 |
NOT_EQUAL
|
不等比較 |
EQUAL
構文:
equal(x: ANY, y: ANY) -> BOOLEAN
例:
x |
y |
equal(x, y) |
|---|---|---|
| 1L | 1L | TRUE |
| 1.0 | 1L | TRUE |
| -1.0 | 1L | FALSE |
| NaN | NaN | TRUE |
NULL |
NULL |
TRUE |
NULL |
ABSENT |
FALSE |
説明:
x と y が等しい場合は TRUE、それ以外の場合は FALSE を返します。
Node.js
const result = await db.pipeline() .collection("books") .select(field("rating").equal(5).as("hasPerfe .execute();test.firestore.js
ウェブ
const result = await execute(db.pipeline() .collection("books") .select(field("rating").equal(5).as(&qung")) );test.firestore.js
Swift
let result = try await db.pipeline() .collection("books") .select([Field("rating").equal(5).as("hasPerfexecute()PipelineSnippets.swift
Kotlin
Android
val result = db.pipeline() .collection("books") .select(field("rating").equal(5).alias("hasPerfec) .execute()DocSnippets.kt
Java
Android
Task<Pipeline.Snapshot> result = db.pipeline() .collection("books") .select(field("rating").equal(5).alias("hasPerfect .execute();DocSnippets.java
Python
from google.cloud.firestore_v1.pipeline_expressions import Field result = ( client.pipeline() .collection("books") .select(Field.of("rating").equal(5).as_("hasPerfectRcute() )firestore_pipelines.py
Java
Pipeline.Snapshot result = firestore .pipeline() .collection("books") .select(equal(field("rating"), 5).as("hasPerfectRating")) .get();PipelineSnippets.java
GREATER_THAN
構文:
greater_than(x: ANY, y: ANY) -> BOOLEAN
説明:
x が y よりも大きい場合は TRUE、それ以外の場合は FALSE を返します。
x と y が比較できない場合は、FALSE を返します。
例:
x |
y |
greater_than(x, y) |
|---|---|---|
| 1L | 0.0 | TRUE |
| 1L | 1L | FALSE |
| 1L | 2L | FALSE |
| "foo" | 0L | FALSE |
| 0L | "foo" | FALSE |
| NaN | 0L | FALSE |
| 0L | NaN | FALSE |
NULL |
NULL |
FALSE |
Node.js
const result = await db.pipeline() .collection("books") .select(field("rating").greaterThan(4).as("hasHi .execute();test.firestore.js
ウェブ
const result = await execute(db.pipeline() .collection("books") .select(field("rating").greaterThan(4).as(ng")) );test.firestore.js
Swift
let result = try await db.pipeline() .collection("books") .select([Field("rating").greaterThan(4).as("hasHixecute()PipelineSnippets.swift
Kotlin
Android
val result = db.pipeline() .collection("books") .select(field("rating").greaterThan(4).alias("hasHig) .execute()DocSnippets.kt
Java
Android
Task<Pipeline.Snapshot> result = db.pipeline() .collection("books") .select(field("rating").greaterThan(4).alias("hasHigh .execute();DocSnippets.java
Python
from google.cloud.firestore_v1.pipeline_expressions import Field result = ( client.pipeline() .collection("books") .select(Field.of("rating").greater_than(4).as_("hasHighRcute() )firestore_pipelines.py
Java
Pipeline.Snapshot result = firestore .pipeline() .collection("books") .select(greaterThan(field("rating"), 4).as("hasHighRating")) .get();PipelineSnippets.java
GREATER_THAN_OR_EQUAL
構文:
greater_than_or_equal(x: ANY, y: ANY) -> BOOLEAN
説明:
x が y 以上の場合は TRUE、それ以外の場合は FALSE を返します。
x と y が比較できない場合は、FALSE を返します。
例:
x |
y |
greater_than_or_equal(x, y) |
|---|---|---|
| 1L | 0.0 | TRUE |
| 1L | 1L | TRUE |
| 1L | 2L | FALSE |
| "foo" | 0L | FALSE |
| 0L | "foo" | FALSE |
| NaN | 0L | FALSE |
| 0L | NaN | FALSE |
NULL |
NULL |
TRUE |
Node.js
const result = await db.pipeline() .collection("books") .select(field("published").greaterThanOrEqual(1900).as("publishedIn20t .execute();test.firestore.js
ウェブ
const result = await execute(db.pipeline() .collection("books") .select(field("published").greaterThanOrEqual(1900).as("pubry")) );test.firestore.js
Swift
let result = try await db.pipeline() .collection("books") .select([Field("published").greaterThanOrEqual(1900).as("publishedIn20txecute()PipelineSnippets.swift
Kotlin
Android
val result = db.pipeline() .collection("books") .select(field("published").greaterThanOrEqual(1900).alias("publishedIn20th) .execute()DocSnippets.kt
Java
Android
Task<Pipeline.Snapshot> result = db.pipeline() .collection("books") .select(field("published").greaterThanOrEqual(1900).alias("publishedIn20thC .execute();DocSnippets.java
Python
from google.cloud.firestore_v1.pipeline_expressions import Field result = ( client.pipeline() .collection("books") .select( Field.of("published") .greater_than_or_equal(1900) .as_("publishedIn20thCenturycute() )firestore_pipelines.py
Java
Pipeline.Snapshot result = firestore .pipeline() .collection("books") .select(greaterThanOrEqual(field("published"), 1900).as("publishedIn20thCentury")) .get();PipelineSnippets.java
LESS_THAN
構文:
less_than(x: ANY, y: ANY) -> BOOLEAN
説明:
x が y よりも小さい場合は TRUE、それ以外の場合は FALSE を返します。
x と y が比較できない場合は、FALSE を返します。
例:
x |
y |
less_than(x, y) |
|---|---|---|
| 1L | 0.0 | FALSE |
| 1L | 1L | FALSE |
| 1L | 2L | TRUE |
| "foo" | 0L | FALSE |
| 0L | "foo" | FALSE |
| NaN | 0L | FALSE |
| 0L | NaN | FALSE |
NULL |
NULL |
FALSE |
Node.js
const result = await db.pipeline() .collection("books") .select(field("published").lessThan(1923).as("isPublicDomain .execute();test.firestore.js
ウェブ
const result = await execute(db.pipeline() .collection("books") .select(field("published").lessThan(1923).as("isPly")) );test.firestore.js
Swift
let result = try await db.pipeline() .collection("books") .select([Field("published").lessThan(1923).as("isPublicDomainxecute()PipelineSnippets.swift
Kotlin
Android
val result = db.pipeline() .collection("books") .select(field("published").lessThan(1923).alias("isPublicDomainP) .execute()DocSnippets.kt
Java
Android
Task<Pipeline.Snapshot> result = db.pipeline() .collection("books") .select(field("published").lessThan(1923).alias("isPublicDomainPr .execute();DocSnippets.java
Python
from google.cloud.firestore_v1.pipeline_expressions import Field result = ( client.pipeline() .collection("books") .select(Field.of("published").less_than(1923).as_("isPublicDomainProcute() )firestore_pipelines.py
Java
Pipeline.Snapshot result = firestore .pipeline() .collection("books") .select(lessThan(field("published"), 1923).as("isPublicDomainProbably")) .get();PipelineSnippets.java
LESS_THAN_OR_EQUAL
構文:
less_than_or_equal(x: ANY, y: ANY) -> BOOLEAN
説明:
x が y 以下の場合は TRUE、それ以外の場合は FALSE を返します。
x と y が比較できない場合は、FALSE を返します。
例:
x |
y |
less_than(x, y) |
|---|---|---|
| 1L | 0.0 | FALSE |
| 1L | 1L | TRUE |
| 1L | 2L | TRUE |
| "foo" | 0L | FALSE |
| 0L | "foo" | FALSE |
| NaN | 0L | FALSE |
| 0L | NaN | FALSE |
NULL |
NULL |
TRUE |
Node.js
const result = await db.pipeline() .collection("books") .select(field("rating").lessThanOrEqual(2).as("hasB .execute();test.firestore.js
ウェブ
const result = await execute(db.pipeline() .collection("books") .select(field("rating").lessThanOrEqual(2).asng")) );test.firestore.js
Swift
let result = try await db.pipeline() .collection("books") .select([Field("rating").lessThanOrEqual(2).as("hasBxecute()PipelineSnippets.swift
Kotlin
Android
val result = db.pipeline() .collection("books") .select(field("rating").lessThanOrEqual(2).alias("hasBa) .execute()DocSnippets.kt
Java
Android
Task<Pipeline.Snapshot> result = db.pipeline() .collection("books") .select(field("rating").lessThanOrEqual(2).alias("hasBad .execute();DocSnippets.java
Python
from google.cloud.firestore_v1.pipeline_expressions import Field result = ( client.pipeline() .collection("books") .select(Field.of("rating").less_than_or_equal(2).as_("hasBadRcute() )firestore_pipelines.py
Java
Pipeline.Snapshot result = firestore .pipeline() .collection("books") .select(lessThanOrEqual(field("rating"), 2).as("hasBadRating")) .get();PipelineSnippets.java
NOT_EQUAL
構文:
not_equal(x: ANY, y: ANY) -> BOOLEAN
説明:
x が y と等しくない場合は TRUE、それ以外の場合は FALSE を返します。
例:
x |
y |
not_equal(x, y) |
|---|---|---|
| 1L | 1L | FALSE |
| 1.0 | 1L | FALSE |
| -1.0 | 1L | TRUE |
| NaN | 0L | TRUE |
| NaN | NaN | FALSE |
NULL |
NULL |
FALSE |
NULL |
ABSENT |
TRUE |
Node.js
const result = await db.pipeline() .collection("books") .select(field("title").notEqual("1984"4")) .execute();test.firestore.js
ウェブ
const result = await execute(db.pipeline() .collection("books") .select(field("title").notEqual("quot;not1984")) );test.firestore.js
Swift
let result = try await db.pipeline() .collection("books") .select([Field("title").notEqual("1984"t;)]) .execute()PipelineSnippets.swift
Kotlin
Android
val result = db.pipeline() .collection("books") .select(field("title").notEqual("1984").al984")) .execute()DocSnippets.kt
Java
Android
Task<Pipeline.Snapshot> result = db.pipeline() .collection("books") .select(field("title").notEqual("1984").ali")) .execute();DocSnippets.java
Python
from google.cloud.firestore_v1.pipeline_expressions import Field result = ( client.pipeline() .collection("books") .select(Field.of("title").not_equal("1984").as) .execute() )firestore_pipelines.py
Java
Pipeline.Snapshot result = firestore .pipeline() .collection("books") .select(notEqual(field("title"), "1984").as("not1984&que() .get();PipelineSnippets.java
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