MySQL UNION with query builder possible?

Issue type:

[x] question [ ] bug report [x] feature request [x] documentation issue

Database system/driver:

[ ] cordova [ ] mongodb [ ] mssql [x] mysql / mariadb [ ] oracle [ ] postgres [ ] sqlite [ ] sqljs [ ] react-native [ ] expo

TypeORM version:

[x] latest [ ] @next [ ] 0.x.x (or put your version here)

Steps to reproduce or a small repository showing the problem: Is it possible to create a UNION select statement using the query builder? I can’t find anything in the documentation about that.

[lffg]

@pleerock, are there any plans to add union to the query builder API?

[golubvladimir]

My version

    const entityManager = getManager();

    const tableUn = this.tableUnion.createQueryBuilder('tu')
        .select(['id', 'description'])
        .getQuery();

    const tableTg = this.tags.createQueryBuilder('tg')
        .select(['id', 'name'])
        .getQuery();

    const tags = await entityManager.query(`${ tableUn } UNION ${ tableTg }`);

    return tags;
  }