fix: select + addOrderBy broke in 0.3.14 (#9961)

* added test for #9960
* fixing the issue
* limiting only to postgres because of NULLS FIRST syntax
* lint

src/query-builder/SelectQueryBuilder.ts

@@ -2515,9 +2515,7 @@ export class SelectQueryBuilder<Entity extends ObjectLiteral>
                                     column.databaseName,
                                 )
                                 return (
-                                    this.escape(orderAlias) +
-                                    " " +
-                                    orderBys[columnName]
+                                    this.escape(orderAlias) + " " + orderValue
                                 )
                             }
                         }

test/github-issues/9960/entity/ExampleEntity.ts

@@ -0,0 +1,12 @@
+import { Entity } from "../../../../src/decorator/entity/Entity"
+import { Column } from "../../../../src/decorator/columns/Column"
+import { PrimaryGeneratedColumn } from "../../../../src/decorator/columns/PrimaryGeneratedColumn"
+
+@Entity()
+export class ExampleEntity {
+    @PrimaryGeneratedColumn()
+    id: number
+
+    @Column()
+    name: string
+}

test/github-issues/9960/issue-9960.ts

@@ -0,0 +1,42 @@
+import { DataSource } from "../../../src"
+import {
+    closeTestingConnections,
+    createTestingConnections,
+    reloadTestingDatabases,
+} from "../../utils/test-utils"
+import { ExampleEntity } from "./entity/ExampleEntity"
+import { expect } from "chai"
+
+describe("github issues > #9960", () => {
+    let dataSources: DataSource[]
+
+    before(async () => {
+        dataSources = await createTestingConnections({
+            entities: [ExampleEntity],
+            enabledDrivers: ["postgres"],
+        })
+    })
+
+    beforeEach(() => reloadTestingDatabases(dataSources))
+    after(() => closeTestingConnections(dataSources))
+
+    it("select + order by must work without issues", async () => {
+        await Promise.all(
+            dataSources.map(async (dataSource) => {
+                const example1 = new ExampleEntity()
+                example1.name = "example #1"
+                await dataSource.manager.save(example1)
+
+                const examples = await dataSource.manager
+                    .createQueryBuilder(ExampleEntity, "example")
+                    .select(["example.id", "example.name"])
+                    .addOrderBy("example.name", "DESC", "NULLS LAST")
+                    .take(1)
+                    .skip(0)
+                    .getMany()
+
+                expect(examples).to.be.eql([{ id: 1, name: "example #1" }])
+            }),
+        )
+    })
+})