I need to make a select from MySQL with the selection values in an array. I have data like this:

const CompaniesRelation = [{CompanyId: ""},{CompanyId: ""},{CompanyId: ""},{CompanyId: ""},{CompanyId: ""}]; 

With Companies Relation I need to select/find, I need to get all the information for each CompanyId's:

 const Companies: Array<Company> = await getRepository(Company).find({ where:{ CompanyId: CompaniesRelation[0].CompanyId, IsActive: true} });

I'm using TypeOrm in Angular. I need to select the information for each object into CompaniesRelation. I need to use fewest selects to DB, in other words, foreach is not the way.

For the final result I need to have an array with all the information of each pany in Companies Relation, like this:

[{CompanyId: "", Name: "", fk:""},{CompanyId: "", Name: "", fk:""},{CompanyId: "", Name: "", fk:""}]

I need to make a select from MySQL with the selection values in an array. I have data like this:

const CompaniesRelation = [{CompanyId: ""},{CompanyId: ""},{CompanyId: ""},{CompanyId: ""},{CompanyId: ""}]; 

With Companies Relation I need to select/find, I need to get all the information for each CompanyId's:

 const Companies: Array<Company> = await getRepository(Company).find({ where:{ CompanyId: CompaniesRelation[0].CompanyId, IsActive: true} });

I'm using TypeOrm in Angular. I need to select the information for each object into CompaniesRelation. I need to use fewest selects to DB, in other words, foreach is not the way.

For the final result I need to have an array with all the information of each pany in Companies Relation, like this:

[{CompanyId: "", Name: "", fk:""},{CompanyId: "", Name: "", fk:""},{CompanyId: "", Name: "", fk:""}]

• javascript
• mysql
• typeorm

• 1 Typeorm also has the IN operator. – Jonas Wilms Commented Mar 1, 2021 at 20:45
• @JonasWilms Do you have an example or link of sintaxys? – user14860979 Commented Mar 1, 2021 at 21:47

1 Answer 1

How you use WHERE x IN explained in find options for find*, and adding WHERE expression for QueryBuilder.

First get your Company Ids into an array of integers:

const panyIds = [1, 2, 3];

or

const panySel = [{ CompanyId: 1 }, { CompanyId: 2 }, { CompanyId: 3 }];
const panyIds = panySel.map(a => a.CompanyId);

Then you can use the In operator with find

import {In} from "typeorm";

const panyList = await getRepository(Company)
  .find({ where: { CompanyId: In (panyIds ) } });

Or you can use the TypeOrm QueryBuilder with "IN" (note the :... syntax)

const panyList = await getRepository(Company)
  .createQueryBuilder()
  .where("CompanyId IN (:...ids )", { ids: panyIds ) })
  .getMany();