비교 함수 참조

비교 함수

이름 설명
EQUAL 등호 비교
GREATER_THAN 초과 비교
GREATER_THAN_OR_EQUAL 이상 비교
LESS_THAN 미만 비교
LESS_THAN_OR_EQUAL 이하 비교
NOT_EQUAL 부등 비교

EQUAL

구문:

equal(x: ANY, y: ANY) -> BOOLEAN

예:

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

설명:

x과 y가 같으면 TRUE를 반환하고, 그렇지 않으면 FALSE를 반환합니다.

Node.js
const result = await db.pipeline()
  .collection("books")
  .select(field("rating").equal(5).as("hasPerfe
ctRating"))

  .execute();test.firestore.js

웹

const result = await execute(db.pipeline()
  .collection("books")
  .select(field("rating").equal(5).as(&qu
ot;hasPerfectRati
ng"))
);test.firestore.js
Swift
let result = try await db.pipeline()
  .collection("books")
  .select([Field("rating").equal(5).as("hasPerfe
ctRating")])
  .e
xecute()PipelineSnippets.swift
Kotlin
Android
val result = db.pipeline()
    .collection("books")
    .select(field("rating").equal(5).alias("hasPerfec
tRating")
)
    .execute()DocSnippets.kt
자바
Android
Task<Pipeline.Snapshot> result = db.pipeline()
    .collection("books")
    .select(field("rating").equal(5).alias("hasPerfect
Rating"))
 
   .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_("hasPerfectR
ating"))
    .exe
cute()
)firestore_pipelines.py
자바
Pipeline.Snapshot result =
    firestore
        .pipeline()
        .collection("books")
        .select(equal(field("rating"), 5).as("hasPerfectRating"))
    
    .execute()
      
  .get();PipelineSnippets.java

GREATER_THAN

구문:

greater_than(x: ANY, y: ANY) -> BOOLEAN

설명:

x이 y보다 크면 TRUE를 반환하고 그렇지 않으면 FALSE를 반환합니다.

x와 y를 비교할 수 없으면 FALSE를 반환합니다.

예:

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
ghRating"))

  .execute();test.firestore.js

웹

const result = await execute(db.pipeline()
  .collection("books")
  .select(field("rating").greaterThan(4).as(
"hasHighRati
ng"))
);test.firestore.js
Swift
let result = try await db.pipeline()
  .collection("books")
  .select([Field("rating").greaterThan(4).as("hasHi
ghRating")])
  .e
xecute()PipelineSnippets.swift
Kotlin
Android
val result = db.pipeline()
    .collection("books")
    .select(field("rating").greaterThan(4).alias("hasHig
hRating")
)
    .execute()DocSnippets.kt
자바
Android
Task<Pipeline.Snapshot> result = db.pipeline()
    .collection("books")
    .select(field("rating").greaterThan(4).alias("hasHigh
Rating"))
 
   .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_("hasHighR
ating"))
    .exe
cute()
)firestore_pipelines.py
자바
Pipeline.Snapshot result =
    firestore
        .pipeline()
        .collection("books")
        .select(greaterThan(field("rating"), 4).as("hasHighRating"))
    
    .execute()
      
  .get();PipelineSnippets.java

GREATER_THAN_OR_EQUAL

구문:

greater_than_or_equal(x: ANY, y: ANY) -> BOOLEAN

설명:

x이 y보다 크거나 같으면 TRUE를 반환하고 그렇지 않으면 FALSE를 반환합니다.

x와 y를 비교할 수 없으면 FALSE를 반환합니다.

예:

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
hCentury"))

  .execute();test.firestore.js

웹

const result = await execute(db.pipeline()
  .collection("books")
  .select(field("published").greaterThanOrEqual(1900).as("pub
lishedIn20thCentu
ry"))
);test.firestore.js
Swift
let result = try await db.pipeline()
  .collection("books")
  .select([Field("published").greaterThanOrEqual(1900).as("publishedIn20t
hCentury")])
  .e
xecute()PipelineSnippets.swift
Kotlin
Android
val result = db.pipeline()
    .collection("books")
    .select(field("published").greaterThanOrEqual(1900).alias("publishedIn20th
Century")
)
    .execute()DocSnippets.kt
자바
Android
Task<Pipeline.Snapshot> result = db.pipeline()
    .collection("books")
    .select(field("published").greaterThanOrEqual(1900).alias("publishedIn20thC
entury"))
 
   .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_("publishedIn20thCentury
")
    )
    .exe
cute()
)firestore_pipelines.py
자바
Pipeline.Snapshot result =
    firestore
        .pipeline()
        .collection("books")
        .select(greaterThanOrEqual(field("published"), 1900).as("publishedIn20thCentury"))
    
    .execute()
      
  .get();PipelineSnippets.java

LESS_THAN

구문:

less_than(x: ANY, y: ANY) -> BOOLEAN

설명:

x이 y보다 작으면 TRUE를 반환하고, 그렇지 않으면 FALSE를 반환합니다.

x와 y를 비교할 수 없으면 FALSE를 반환합니다.

예:

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
Probably"))

  .execute();test.firestore.js

웹

const result = await execute(db.pipeline()
  .collection("books")
  .select(field("published").lessThan(1923).as("isP
ublicDomainProbab
ly"))
);test.firestore.js
Swift
let result = try await db.pipeline()
  .collection("books")
  .select([Field("published").lessThan(1923).as("isPublicDomain
Probably")])
  .e
xecute()PipelineSnippets.swift
Kotlin
Android
val result = db.pipeline()
    .collection("books")
    .select(field("published").lessThan(1923).alias("isPublicDomainP
robably")
)
    .execute()DocSnippets.kt
자바
Android
Task<Pipeline.Snapshot> result = db.pipeline()
    .collection("books")
    .select(field("published").lessThan(1923).alias("isPublicDomainPr
obably"))
 
   .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_("isPublicDomainPro
bably"))
    .exe
cute()
)firestore_pipelines.py
자바
Pipeline.Snapshot result =
    firestore
        .pipeline()
        .collection("books")
        .select(lessThan(field("published"), 1923).as("isPublicDomainProbably"))
    
    .execute()
      
  .get();PipelineSnippets.java

LESS_THAN_OR_EQUAL

구문:

less_than_or_equal(x: ANY, y: ANY) -> BOOLEAN

설명:

x이 y보다 작거나 같으면 TRUE를 반환하고 그렇지 않으면 FALSE를 반환합니다.

x와 y를 비교할 수 없으면 FALSE를 반환합니다.

예:

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
adRating"))

  .execute();test.firestore.js

웹

const result = await execute(db.pipeline()
  .collection("books")
  .select(field("rating").lessThanOrEqual(2).as
("hasBadRati
ng"))
);test.firestore.js
Swift
let result = try await db.pipeline()
  .collection("books")
  .select([Field("rating").lessThanOrEqual(2).as("hasB
adRating")])
  .e
xecute()PipelineSnippets.swift
Kotlin
Android
val result = db.pipeline()
    .collection("books")
    .select(field("rating").lessThanOrEqual(2).alias("hasBa
dRating")
)
    .execute()DocSnippets.kt
자바
Android
Task<Pipeline.Snapshot> result = db.pipeline()
    .collection("books")
    .select(field("rating").lessThanOrEqual(2).alias("hasBad
Rating"))
 
   .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_("hasBadR
ating"))
    .exe
cute()
)firestore_pipelines.py
자바
Pipeline.Snapshot result =
    firestore
        .pipeline()
        .collection("books")
        .select(lessThanOrEqual(field("rating"), 2).as("hasBadRating"))
    
    .execute()
      
  .get();PipelineSnippets.java

NOT_EQUAL

구문:

not_equal(x: ANY, y: ANY) -> BOOLEAN

설명:

x이 y와 같지 않으면 TRUE를 반환하고, 그렇지 않으면 FALSE를 반환합니다.

예:

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"
).as("not198
4"))
  .execute();test.firestore.js

웹

const result = await execute(db.pipeline()
  .collection("books")
  .select(field("title").notEqual("
;1984").as(&
quot;not1984"))
);test.firestore.js
Swift
let result = try await db.pipeline()
  .collection("books")
  .select([Field("title").notEqual("1984"
).as("not1984&quo
t;)])
  .execute()PipelineSnippets.swift
Kotlin
Android
val result = db.pipeline()
    .collection("books")
    .select(field("title").notEqual("1984").al
ias("not1
984"))
    .execute()DocSnippets.kt
자바
Android
Task<Pipeline.Snapshot> result = db.pipeline()
    .collection("books")
    .select(field("title").notEqual("1984").ali
as("not1984
"))
    .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
_("not1984")
)
    .execute()
)firestore_pipelines.py
자바
Pipeline.Snapshot result =
    firestore
        .pipeline()
        .collection("books")
        .select(notEqual(field("title"), "1984").as("not1984&qu
ot;))
        .execut
e()
        .get();PipelineSnippets.java

다음 단계