Find Options
Find Options
- Basic options
- Advanced options
Basic options
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 infindOnemethod.lockis an object which can be defined as:{ mode: "optimistic", version: number|Date }or ``` { mode: "pessimistic_read"|"pessimistic_write"|"dirty_read" }
for example:
userRepository.findOne(1, { lock: { mode: "optimistic", version: 1 } })
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 });
## Advanced options
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()
> Note: beware with `Raw` operator. It executes pure SQL from supplied expression and should not contain a user input, otherwise it will lead to SQL-injection.
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') ```
