postgresql 10 更改串行列错误 42p01

Question

在更正现有表以在主键上使用串行列时遇到问题。为了模拟问题，我创建了一个新表：

CREATE TABLE markets."TestSequence" (
    "Id" integer NOT NULL,
    "Name" text COLLATE pg_catalog."default",
    CONSTRAINT "PK_TestSequence" PRIMARY KEY ("Id")
);

然后我运行了导致问题的查询：

ALTER TABLE markets."TestSequence" ALTER COLUMN "Id" TYPE integer;
ALTER TABLE markets."TestSequence" ALTER COLUMN "Id" SET NOT NULL;
CREATE SEQUENCE "TestSequence_Id_seq" AS integer START WITH 1 INCREMENT BY 1 NO MINVALUE NO MAXVALUE NO CYCLE;
ALTER TABLE markets."TestSequence" ALTER COLUMN "Id" SET DEFAULT (nextval('"TestSequence_Id_seq"'));
ALTER SEQUENCE "TestSequence_Id_seq" OWNED BY "TestSequence"."Id";

我收到以下错误：

ERROR:  relation "TestSequence" does not exist
SQL state: 42P01

根据doc OWNED BY 不带任何架构前缀。所以我尝试创建没有架构的表，它工作正常。

CREATE TABLE "TestSequence" (
    "Id" integer NOT NULL,
    "Name" text COLLATE pg_catalog."default",
    CONSTRAINT "PK_TestSequence" PRIMARY KEY ("Id")
);

并运行相应的更改查询：

ALTER TABLE "TestSequence" ALTER COLUMN "Id" TYPE integer;
ALTER TABLE "TestSequence" ALTER COLUMN "Id" SET NOT NULL;
CREATE SEQUENCE "TestSequence_Id_seq" AS integer START WITH 1 INCREMENT BY 1 NO MINVALUE NO MAXVALUE NO CYCLE;
ALTER TABLE "TestSequence" ALTER COLUMN "Id" SET DEFAULT (nextval('"TestSequence_Id_seq"'));
ALTER SEQUENCE "TestSequence_Id_seq" OWNED BY "TestSequence"."Id";

如何使这项工作适用于与架构的关系？

Answer 1

您链接的doc 表示，owned by

指定的表必须具有相同的所有者并且在相同的架构中 作为序列。

你没有为序列指定schema，所以默认创建在public，和表schema不一样。

尝试将序列创建为

CREATE SEQUENCE markets."TestSequence_Id_seq" AS integer  ...

话虽如此，没有什么能阻止您指定序列和表的架构

ALTER SEQUENCE markets."TestSequence_Id_seq" OWNED BY markets."TestSequence"."Id";