fix

things/nest-typeorm/src/entities/decorators/relation.ts

 import { Column } from 'typeorm';
 import { MergePropertyDecorators } from './base';
 import { ApiProperty } from '@nestjs/swagger';
-import { IsNotEmpty, IsOptional, IsPositive } from 'class-validator';
+import { IsInt, IsNotEmpty, IsOptional, IsPositive } from 'class-validator';
 import { BigintTransformer } from '../utility/bigint-transform';
 
 export const RelationColumn = (description = '对应编号', notNull = false) =>
@@ -13,6 +13,7 @@ export const RelationColumn = (description = '对应编号', notNull = false) =>
     }),
     ApiProperty({ type: Number, description }),
     ...(notNull ? [] : [IsOptional()]),
+    IsInt(),
     IsPositive(),
   ]);
 export const StringRelationColumn = (