Method unionAll

packages/db/src/query/builder/index.ts:207–233

(
    sourceOrBranch: Source | QueryBuilder<any>,
    ...branches: Array<QueryBuilder<any>>
  )

    TBranches extends readonly [QueryBuilder<any>, ...Array<QueryBuilder<any>>],
  >(...branches: TBranches): QueryBuilder<ContextFromUnionBranches<TBranches>>
  unionAll(
    sourceOrBranch: Source | QueryBuilder<any>,
    ...branches: Array<QueryBuilder<any>>
  ): QueryBuilder<any> {
    if (sourceOrBranch instanceof BaseQueryBuilder) {
      return new BaseQueryBuilder({
        ...this.query,
        from: new UnionAll(
          [sourceOrBranch, ...branches].map((branch) =>
            (branch as unknown as BaseQueryBuilder)._getQuery(),
          ),
        ),
      }) as any
    }

    const refs = this._createRefsForSource(
      sourceOrBranch as Source,
      UNION_ALL_SOURCE_CONTEXT,
    )
    const from =
      refs.length === 1 ? refs[0]![1] : new UnionFrom(refs.map((r) => r[1]))

    return new BaseQueryBuilder({
      ...this.query,
      from,
    }) as any
  }

  /**
   * Join another table or subquery to the current query