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Description

ERROR: duplicate key value violates unique constraint "reports_pkey"

code:

type report struct {
    gorm.Model
    Name string `gorm:"column:name" json:"name"`
}

func TestPgBug(t *testing.T) {
    dsn := fmt.Sprintf("host=%s user=%s port=%d dbname=%s password=%s sslmode=disable",
        "127.0.0.1", "postgres", 15432, "test", "123456")
    log.Println(dsn)
    pgDb, err := gorm.Open(postgres.New(postgres.Config{
        DSN:                  dsn,
        PreferSimpleProtocol: true,
    }))
    if err != nil {
        t.Fatal(err)
    }
    pgDb = pgDb.Debug()
    pgDb.AutoMigrate(&report{})
    test1 := &report{Name: "test1,不插入id"}
    test2 := &report{Name: "test2,插入id", Model: gorm.Model{ID: 2}}
    test3 := &report{Name: "test3,不插入id"}
    if err := pgDb.Create(&test1).Error; err != nil {
        t.Fatal(err)
    }
    if err := pgDb.Create(&test2).Error; err != nil {
        t.Fatal(err)
    }
    if err := pgDb.Create(&test3).Error; err != nil {
        t.Fatal(err)
    }
}


=== RUN   TestPgBug
2024/06/12 16:24:31 host=127.0.0.1 user=postgres port=15432 dbname=test password=123456 sslmode=disable

2024/06/12 16:24:31 /home/sin/projects/worframe/test/gorm_test.go:28
[6.129ms] [rows:1] SELECT count(*) FROM information_schema.tables WHERE table_schema = CURRENT_SCHEMA() AND table_name = 'reports' AND table_type = 'BASE TABLE'

2024/06/12 16:24:31 /home/sin/projects/worframe/test/gorm_test.go:28
[7.617ms] [rows:0] CREATE TABLE "reports" ("id" bigserial,"created_at" timestamptz,"updated_at" timestamptz,"deleted_at" timestamptz,"name" text,PRIMARY KEY ("id"))

2024/06/12 16:24:31 /home/sin/projects/worframe/test/gorm_test.go:28
[2.806ms] [rows:0] CREATE INDEX IF NOT EXISTS "idx_reports_deleted_at" ON "reports" ("deleted_at")

2024/06/12 16:24:31 /home/sin/projects/worframe/test/gorm_test.go:32
[2.288ms] [rows:1] INSERT INTO "reports" ("created_at","updated_at","deleted_at","name") VALUES ('2024-06-12 16:24:31.789','2024-06-12 16:24:31.789',NULL,'test1,不插入id') RETURNING "id"

2024/06/12 16:24:31 /home/sin/projects/worframe/test/gorm_test.go:35
[1.768ms] [rows:1] INSERT INTO "reports" ("created_at","updated_at","deleted_at","name","id") VALUES ('2024-06-12 16:24:31.791','2024-06-12 16:24:31.791',NULL,'test2,插入id',2) RETURNING "id"

2024/06/12 16:24:31 /home/sin/projects/worframe/test/gorm_test.go:38 ERROR: duplicate key value violates unique constraint "reports_pkey" (SQLSTATE 23505)
[1.340ms] [rows:0] INSERT INTO "reports" ("created_at","updated_at","deleted_at","name") VALUES ('2024-06-12 16:24:31.793','2024-06-12 16:24:31.793',NULL,'test3,不插入id') RETURNING "id"
    gorm_test.go:39: ERROR: duplicate key value violates unique constraint "reports_pkey" (SQLSTATE 23505)
--- FAIL: TestPgBug (0.08s)

FAIL

This Bug could come from a problem with the database itself

create table test_table
(
    id   bigserial
        primary key,
    name varchar
);

alter table test_table
    owner to postgres;

insert into test_table(name) values ('test1,no insert id');
insert into test_table values (2,'test2,insert id');
insert into test_table(name) values ('test3,no insert id');

The same problem arises ``` [23505] ERROR: duplicate key value violates unique constraint "test_table_pkey" 详细：Key (id)=(2) already exists.

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