postgresql – 如何将公共模式恢复到不同的模式

发布时间：2020-12-13 15:55:56 所属栏目：百科来源：网络整理

导读：我有一个转储,数据和结构在公共架构中.我想将其恢复为具有自定义名称的模式 – 我该怎么做？编辑V 2：我的转储文件来自heroku,在开头看起来像这样： PGDMP !pd6rq1i7f3kcath9.1.59.1.6Y0ENCODINENCODINGSET client_encoding = 'UTF8';falseZ00STDSTRINGSST

我有一个转储,数据和结构在公共架构中.我想将其恢复为具有自定义名称的模式 – 我该怎么做？

编辑V 2：

我的转储文件来自heroku,在开头看起来像这样：

PGDMP
    !
pd6rq1i7f3kcath9.1.59.1.6<Y
0ENCODINENCODINGSET client_encoding = 'UTF8';
falseZ
00
STDSTRINGS
STDSTRINGS)SET standard_conforming_strings = 'off';
false[
126216385d6rq1i7f3kcatDATABASE?CREATE DATABASE d6rq1i7f3kcath WITH TEMPLATE = template0 ENCODING = 'UTF8' LC_COLLATE = 'en_US.UTF-8' LC_CTYPE = 'en_US.UTF-8';
DROP DATABASE d6rq1i7f3kcath;
uc0lt9t3fj0da4false26152200publicSCHEMACREATE SCHEMA public;
DROP SCHEMA public;
postgresfalse
SCHEMA publicCOMMENT6COMMENT ON SCHEMA public IS 'standard public schema';
postgresfalse5?307916392plpgsql EXTENSION?CREATE EXTENSION IF NOT EXISTS plpgsql WITH SCHEMA pg_catalog;
DROP EXTENSION plpgsql;
false]
00EXTENSION plpgsqlCOMMENT@COMMENT ON EXTENSION plpgsql IS 'PL/pgSQL procedural language';
false212?125516397_final_mode(anyarrayFUNCTION?CREATE FUNCTION _final_mode(anyarray) RETURNS anyelement
    LANGUAGE sql IMMUTABLE
    AS $_$
      SELECT a
      FROM unnest($1) a
      GROUP BY 1
      ORDER BY COUNT(1) DESC,1
      LIMIT 1;
    $_$;,DROP FUNCTION public._final_mode(anyarray);
publicuc0lt9t3fj0da4false5?125516398mode(anyelement)    AGGREGATE?CREATE AGGREGATE mode(anyelement) (
    SFUNC = array_append,STYPE = anyarray,INITCOND = '{}',FINALFUNC = _final_mode
);
(DROP AGGREGATE public.mode(anyelement);
publicuc0lt9t3fj0da4false5224?125916399 advert_candidate_collector_failsTABLECREATE TABLE advert_candidate_collector_fails (
    id integer NOT NULL,advert_candidate_collector_status_id integer,exception_message text,stack_trace text,url text,created_at timestamp without time zone,updated_at timestamp without time zone
);
4DROP TABLE public.advert_candidate_collector_fails;
publicuc0lt9t3fj0da4false5?125916405'advert_candidate_collector_fails_id_seSEQUENCE?CREATE SEQUENCE advert_candidate_collector_fails_id_seq
    START WITH 1
    INCREMENT BY 1
    NO MINVALUE
    NO MAXVALUE
    CACHE 1;
>DROP SEQUENCE public.advert_candidate_collector_fails_id_seq;
publicuc0lt9t3fj0da4false1615^
00'advert_candidate_collector_fails_id_seqSEQUENCE OWNED BYeALTER SEQUENCE advert_candidate_collector_fails_id_seq OWNED BY advert_candidate_collector_fails.id;
publicuc0lt9t3fj0da4false162_
00'advert_candidate_collector_fails_id_seq
                                          SEQUENCE SETRSELECT pg_catalog.setval('advert_candidate_collector_fails_id_seq',13641,true);
publicuc0lt9t3fj0da4false162?125916407#advert_candidate_collector_statusesTABLE?CREATE TABLE advert_candidate_collector_statuses (
    id integer NOT NULL,data_source_id character varying(120),state character varying(15) DEFAULT 'Queued'::character varying,source_name character varying(30),collector_type character varying(30),started_at timestamp without time zone,ended_at timestamp without time zone,times_failed integer DEFAULT 0,updated_at timestamp without time zone
);
7DROP TABLE public.advert_candidate_collector_statuses;
publicuc0lt9t3fj0da4false240424055?125916412*advert_candidate_collector_statuses_id_seSEQUENCE?CREATE SEQUENCE advert_candidate_collector_statuses_id_seq
    START WITH 1
    INCREMENT BY 1
    NO MINVALUE
    NO MAXVALUE
    CACHE 1;
ADROP SEQUENCE public.advert_candidate_collector_statuses_id_seq;
publicuc0lt9t3fj0da4false1635`
00*advert_candidate_collector_statuses_id_seqSEQUENCE OWNED BYkALTER SEQUENCE advert_candidate_collector_statuses_id_seq OWNED BY advert_candidate_collector_statuses.id;
publicuc0lt9t3fj0da4false164a
00*advert_candidate_collector_statuses_id_seq
                                             SEQUENCE SETVSELECT pg_catalog.setval('advert_candidate_collector_statuses_id_seq',133212,true);
publicuc0lt9t3fj0da4false164?125916414advertsTABLE"CREATE TABLE adverts (
    id integer NOT NULL,car_id integer NOT NULL,source_name character varying(20),first_extraction timestamp without time zone,last_observed_at timestamp without time zone,updated_at timestamp without time zone,source_id character varying(255),deactivated_at timestamp without time zone,seller_id integer NOT NULL,data_source_id character varying(100),price integer,availability_state character varying(15)
);

ROP TABLE public.adverts;
publicuc0lt9t3fj0da4false5?125916420adverts_id_seSEQUENCEpCREATE SEQUENCE adverts_id_seq
    START WITH 1
    INCREMENT BY 1

解决方法

@ Tometzky的解决方案不太对,至少在9.2的pg_dump中.它将在新模式中创建表,但是pg_dump模式 – 限定ALTER TABLE … OWNER TO语句,因此这些将失败：

postgres=# CREATE DATABASE demo;
cCREATE DATABASE
postgres=# c demo
You are now connected to database "demo" as user "postgres".
demo=# CREATE TABLE public.test ( dummy text );
CREATE TABLE
demo=# d
        List of relations
 Schema | Name | Type  |  Owner   
--------+------+-------+----------
 public | test | table | postgres
(1 row)
demo=# q
$
$pg_dump -U postgres -f demo.sql demo
$sed -i 's/^SET search_path = public,pg_catalog;$/SET search_path = testschema,pg_catalog;/' demo.sql
$grep testschema demo.sql 
SET search_path = testschema,pg_catalog;
$dropdb -U postgres demo
$createdb -U postgres demo
$psql -U postgres -c 'CREATE SCHEMA testschema;' demo
CREATE SCHEMA
$psql -U postgres -f demo.sql -v ON_ERROR_STOP=1 -v QUIET=1 demo
psql:demo.sql:40: ERROR:  relation "public.test" does not exist
$psql demo
demo=> d testschema.test 
  Table "testschema.test"
 Column | Type | Modifiers 
--------+------+-----------
 dummy  | text |

您还需要编辑转储以删除public.test上的架构限定或将其更改为新架构名称. sed是一个有用的工具.

我可以发誓这样做的正确方法是使用pg_dump -Fc -n public -f dump.dbbackup然后pg_restore进入一个新模式,但我现在似乎无法确切地知道如何.

更新：不,看起来sed是你最好的选择.见I want to restore the database with a different schema

（编辑：李大同）

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