Postgress change relationship between two tables in NestJs - postgresql

Question

i have table file and product, now its one to many, but i want to change realtionship to many-to-one. And i use mirgation in NestJS.
My code
import type { MigrationInterface, QueryRunner } from 'typeorm';
export class RelationshipInImageCategory1671354171023 implements MigrationInterface {
public async up(queryRunner: QueryRunner): Promise<void> {
await queryRunner.query('ALTER TABLE file_entity DROP CONSTRAINT ' +
'public.categories_entity.FK_23cf240bcad452131ad38135723');
await queryRunner.query('ALTER TABLE product_entity ADD CONSTRAINT ' +
'FK.file_entity FOREIGN KEY (file_entity.id) REFERENCES file_entity (id)');
}
public async down(queryRunner: QueryRunner): Promise<void> {
await queryRunner.query('ALTER TABLE file_entity ADD CONSTRAINT ' +
'public.categories_entity.FK_23cf240bcad452131ad38135723 ' +
'FOREIGN KEY (product_entity.id) REFERENCES categories_entity (id)');
await queryRunner.query('ALTER TABLE product_entity DROP CONSTRAINT ' +
'FK.file_entity');
}
}
I have error {
query: 'ALTER TABLE file_entity DROP CONSTRAINT public.product_entity.FK_23cf240bcad452131ad38135723',
parameters: undefined,
driverError: error: syntax error at or near "."

Answer 1

Seems like work.
public async up(queryRunner: QueryRunner): Promise<void> {
await queryRunner.query('ALTER TABLE IF EXISTS product_entity DROP' +
' CONSTRAINT IF EXISTS "FK_e2c62cb8eaec0d909de8264e5ca"');
await queryRunner.query('ALTER TABLE file_entity ADD COLUMN IF NOT EXISTS product_id INT');
await queryRunner.query('ALTER TABLE file_entity ADD CONSTRAINT ' +
'FK_product FOREIGN KEY(product_id) REFERENCES product_entity(id)');
}
public async down(queryRunner: QueryRunner): Promise<void> {
await queryRunner.query('ALTER TABLE product_entity ADD CONSTRAINT ' +
'FK_e2c62cb8eaec0d909de8264e5ca FOREING KEY(ImageId) REFERENCES file_entity(id)');
await queryRunner.query('ALTER TABLE IF EXISTS file_entity DROP CONSTRAINT ' +
'IF EXIST "FK_categories"');
}