All repository and manager find
methods accept special options you can use to query data you need without using QueryBuilder
:
select
- indicates which properties of the main object must be selected
userRepository.find({ select: ["firstName", "lastName"] });
relations
- relations needs to be loaded with the main entity. Sub-relations can also be loaded (shorthand for join and leftJoinAndSelect)
userRepository.find({ relations: ["profile", "photos", "videos"] });
userRepository.find({ relations: ["profile", "photos", "videos", "videos.video_attributes"] });
join
- joins needs to be performed for the entity. Extended version of "relations".
userRepository.find({
join: {
alias: "user",
leftJoinAndSelect: {
profile: "user.profile",
photo: "user.photos",
video: "user.videos"
}
}
});
where
- simple conditions by which entity should be queried.
userRepository.find({ where: { firstName: "Timber", lastName: "Saw" } });
Querying a column from an embedded entity should be done with respect to the hierarchy in which it was defined. Example:
userRepository.find({ where: { name: { first: "Timber", last: "Saw" } } });
Querying with OR operator:
userRepository.find({
where: [
{ firstName: "Timber", lastName: "Saw" },
{ firstName: "Stan", lastName: "Lee" }
]
});
will execute following query:
SELECT * FROM "user" WHERE ("firstName" = 'Timber' AND "lastName" = 'Saw') OR ("firstName" = 'Stan' AND "lastName" = 'Lee')
order
- selection order.
userRepository.find({
order: {
name: "ASC",
id: "DESC"
}
});
find
methods which return multiple entities (find
, findAndCount
, findByIds
) also accept following options:
skip
- offset (paginated) from where entities should be taken.
userRepository.find({
skip: 5
});
take
- limit (paginated) - max number of entities that should be taken.
userRepository.find({
take: 10
});
** If you are using typeorm with MSSQL, and want to use take
or limit
, you need to use order as well or you will receive the following error: 'Invalid usage of the option NEXT in the FETCH statement.'
userRepository.find({
order: {
columnName: 'ASC'
},
skip: 0,
take: 10
})
cache
- Enables or disables query result caching. See caching for more information and options.
userRepository.find({
cache: true
})
lock
- Enables locking mechanism for query. Can be used only infindOne
method.lock
is an object which can be defined as:
{ mode: "optimistic", version: number|Date }
or
{ mode: "pessimistic_read"|"pessimistic_write"|"dirty_read"|"pessimistic_partial_write"|"pessimistic_write_or_fail" }
for example:
userRepository.findOne(1, {
lock: { mode: "optimistic", version: 1 }
})
pessimistic_partial_write
and pessimistic_write_or_fail
are supported only on Postgres and are equivalents of SELECT .. FOR UPDATE SKIP LOCKED
and SELECT .. FOR UPDATE NOWAIT
, accordingly.
Complete example of find options:
userRepository.find({
select: ["firstName", "lastName"],
relations: ["profile", "photos", "videos"],
where: {
firstName: "Timber",
lastName: "Saw"
},
order: {
name: "ASC",
id: "DESC"
},
skip: 5,
take: 10,
cache: true
});
TypeORM provides a lot of built-in operators that can be used to create more complex comparisons:
Not
import {Not} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
title: Not("About #1")
})
will execute following query:
SELECT * FROM "post" WHERE "title" != 'About #1'
LessThan
import {LessThan} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
likes: LessThan(10)
});
will execute following query:
SELECT * FROM "post" WHERE "likes" < 10
LessThanOrEqual
import {LessThanOrEqual} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
likes: LessThanOrEqual(10)
});
will execute following query:
SELECT * FROM "post" WHERE "likes" <= 10
MoreThan
import {MoreThan} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
likes: MoreThan(10)
});
will execute following query:
SELECT * FROM "post" WHERE "likes" > 10
MoreThanOrEqual
import {MoreThanOrEqual} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
likes: MoreThanOrEqual(10)
});
will execute following query:
SELECT * FROM "post" WHERE "likes" >= 10
Equal
import {Equal} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
title: Equal("About #2")
});
will execute following query:
SELECT * FROM "post" WHERE "title" = 'About #2'
Like
import {Like} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
title: Like("%out #%")
});
will execute following query:
SELECT * FROM "post" WHERE "title" LIKE '%out #%'
Between
import {Between} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
likes: Between(1, 10)
});
will execute following query:
SELECT * FROM "post" WHERE "likes" BETWEEN 1 AND 10
In
import {In} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
title: In(["About #2", "About #3"])
});
will execute following query:
SELECT * FROM "post" WHERE "title" IN ('About #2','About #3')
Any
import {Any} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
title: Any(["About #2", "About #3"])
});
will execute following query (Postgres notation):
SELECT * FROM "post" WHERE "title" = ANY(['About #2','About #3'])
IsNull
import {IsNull} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
title: IsNull()
});
will execute following query:
SELECT * FROM "post" WHERE "title" IS NULL
Raw
import {Raw} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
likes: Raw("dislikes - 4")
});
will execute following query:
SELECT * FROM "post" WHERE "likes" = "dislikes" - 4
In the simplest case, a raw query is inserted immediately after the equal symbol. But you can also completely rewrite the comparison logic using the function.
import {Raw} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
currentDate: Raw(alias =>`${alias} > NOW()`)
});
will execute following query:
SELECT * FROM "post" WHERE "currentDate" > NOW()
If you need to provide user input, you should not include the user input directly in your query as this may create a SQL injection vulnerability. Instead, you can use the second argument of the Raw
function to provide a list of parameters to bind to the query.
import {Raw} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
currentDate: Raw(alias =>`${alias} > ':date'`, { date: "2020-10-06" })
});
will execute following query:
SELECT * FROM "post" WHERE "currentDate" > '2020-10-06'
If you need to provide user input that is an array, you can bind them as a list of values in the SQL statement by using the special expression syntax:
import {Raw} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
title: Raw(alias =>`${alias} IN (:...titles)`, { titles: ["Go To Statement Considered Harmful", "Structured Programming"] })
});
will execute following query:
SELECT * FROM "post" WHERE "titles" IN ('Go To Statement Considered Harmful', 'Structured Programming')
Also you can combine these operators with Not
operator:
import {Not, MoreThan, Equal} from "typeorm";
const loadedPosts = await connection.getRepository(Post).find({
likes: Not(MoreThan(10)),
title: Not(Equal("About #2"))
});
will execute following query:
SELECT * FROM "post" WHERE NOT("likes" > 10) AND NOT("title" = 'About #2')