feat: add support for ON CONFLICT for cockroach (typeorm#4518)

Closes: typeorm#4513

src/query-builder/InsertQueryBuilder.ts

@@ -220,7 +220,7 @@ export class InsertQueryBuilder<Entity> extends QueryBuilder<Entity> {
     }
 
     /**
-     * Adds additional ON CONFLICT statement supported in postgres.
+     * Adds additional ON CONFLICT statement supported in postgres and cockroach.
      */
     onConflict(statement: string): this {
         this.expressionMap.onConflict = statement;
@@ -249,7 +249,7 @@ export class InsertQueryBuilder<Entity> extends QueryBuilder<Entity> {
       if (statement && statement.overwrite instanceof Array) {
         if (this.connection.driver instanceof MysqlDriver) {
           this.expressionMap.onUpdate.overwrite = statement.overwrite.map(column => `${column} = VALUES(${column})`).join(", ");
-        } else if (this.connection.driver instanceof PostgresDriver || this.connection.driver instanceof AbstractSqliteDriver) {
+        } else if (this.connection.driver instanceof PostgresDriver || this.connection.driver instanceof AbstractSqliteDriver || this.connection.driver instanceof CockroachDriver) {
           this.expressionMap.onUpdate.overwrite = statement.overwrite.map(column => `${column} = EXCLUDED.${column}`).join(", ");
         }
       }
@@ -300,7 +300,7 @@ export class InsertQueryBuilder<Entity> extends QueryBuilder<Entity> {
                 query += ` DEFAULT VALUES`;
             }
         }
-        if (this.connection.driver instanceof PostgresDriver || this.connection.driver instanceof AbstractSqliteDriver) {
+        if (this.connection.driver instanceof PostgresDriver || this.connection.driver instanceof AbstractSqliteDriver || this.connection.driver instanceof CockroachDriver) {
           query += `${this.expressionMap.onIgnore ? " ON CONFLICT DO NOTHING " : ""}`;
           query += `${this.expressionMap.onConflict ? " ON CONFLICT " + this.expressionMap.onConflict : ""}`;
           if (this.expressionMap.onUpdate) {

test/github-issues/4513/entity/User.ts

@@ -0,0 +1,13 @@
+import { Entity, PrimaryColumn, Column } from "../../../../src";
+
+@Entity()
+export class User {
+  @PrimaryColumn()
+  name: string;
+
+  @PrimaryColumn()
+  email: string;
+
+  @Column()
+  age: number;
+}

test/github-issues/4513/issue-4513.ts

@@ -0,0 +1,140 @@
+import "reflect-metadata";
+import { createTestingConnections, closeTestingConnections, reloadTestingDatabases } from "../../utils/test-utils";
+import { Connection } from "../../../src/connection/Connection";
+import { User } from "./entity/User";
+
+describe("github issues > #4513 CockroachDB support for onConflict", () => {
+
+  let connections: Connection[];
+  before(async () => connections = await createTestingConnections({
+    entities: [__dirname + "/entity/*{.js,.ts}"],
+    schemaCreate: true,
+    dropSchema: true,
+    enabledDrivers: ["cockroachdb"]
+  }));
+  beforeEach(() => reloadTestingDatabases(connections));
+  after(() => closeTestingConnections(connections));
+
+  it("should insert if no conflict", () => Promise.all(connections.map(async connection => {
+    const user1 = new User();
+    user1.name = "example";
+    user1.email = "example@example.com";
+    user1.age = 30;
+
+    await connection.createQueryBuilder()
+      .insert()
+      .into(User)
+      .values(user1)
+      .execute();
+
+    const user2 = new User();
+    user2.name = "example2";
+    user2.email = "example2@example.com";
+    user2.age = 42;
+
+    await connection.createQueryBuilder()
+      .insert()
+      .into(User)
+      .values(user2)
+      .onConflict(`("name", "email") DO NOTHING`)
+      .execute();
+
+    await connection.manager.find(User).should.eventually.have.lengthOf(2);
+  })));
+
+  it("should update on conflict with do update", () => Promise.all(connections.map(async connection => {
+    const user1 = new User();
+    user1.name = "example";
+    user1.email = "example@example.com";
+    user1.age = 30;
+
+    await connection.createQueryBuilder()
+      .insert()
+      .into(User)
+      .values(user1)
+      .execute();
+
+    const user2 = new User();
+    user2.name = "example";
+    user2.email = "example@example.com";
+    user2.age = 42;
+
+    await connection.createQueryBuilder()
+      .insert()
+      .into(User)
+      .values(user2)
+      .onConflict(`("name", "email") DO UPDATE SET age = EXCLUDED.age`)
+      .execute();
+
+    await connection.manager.findOne(User, { name: "example", email: "example@example.com" }).should.eventually.be.eql({
+      name: "example",
+      email: "example@example.com",
+      age: 42,
+    });
+  })));
+
+  it("should not update on conflict with do nothing", () => Promise.all(connections.map(async connection => {
+    const user1 = new User();
+    user1.name = "example";
+    user1.email = "example@example.com";
+    user1.age = 30;
+
+    await connection.createQueryBuilder()
+      .insert()
+      .into(User)
+      .values(user1)
+      .execute();
+
+    const user2 = new User();
+    user2.name = "example";
+    user2.email = "example@example.com";
+    user2.age = 42;
+
+    await connection.createQueryBuilder()
+      .insert()
+      .into(User)
+      .values(user2)
+      .onConflict(`("name", "email") DO NOTHING`)
+      .execute();
+
+    await connection.manager.findOne(User, { name: "example", email: "example@example.com" }).should.eventually.be.eql({
+      name: "example",
+      email: "example@example.com",
+      age: 30,
+    });
+  })));
+
+  it("should update with orUpdate", () => Promise.all(connections.map(async connection => {
+    const user1 = new User();
+    user1.name = "example";
+    user1.email = "example@example.com";
+    user1.age = 30;
+
+    await connection.createQueryBuilder()
+      .insert()
+      .into(User)
+      .values(user1)
+      .execute();
+
+    const user2 = new User();
+    user2.name = "example";
+    user2.email = "example@example.com";
+    user2.age = 42;
+
+    await connection.createQueryBuilder()
+      .insert()
+      .into(User)
+      .values(user2)
+      .orUpdate({
+        conflict_target: ["name", "email"],
+        overwrite: ["age"],
+      })
+      .execute();
+
+    await connection.manager.findOne(User, { name: "example", email: "example@example.com" }).should.eventually.be.eql({
+      name: "example",
+      email: "example@example.com",
+      age: 42,
+    });
+  })));
+});