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  • PostgreSQL的 fdw 跨库使用

     
    create extension postgres_fdw; 
    create server server_remote_farr foreign data wrapper postgres_fdw options(host '172.16.3.59',port '1921',dbname 'postgres');
    create user mapping for android_market server server_remote_farr options(user 'skydata_test',password 'skydata_test');
    CREATE FOREIGN TABLE tbl_kenyon(id int,create_user int,model_name varchar,flag int) server server_remote_farr options (schema_name 'metadata',table_name 'guide_model');
    
    select * from tbl_kenyon;
    drop foreign table tbl_kenyon;
    Mysql:
    CREATE SERVER mysql_svr  FOREIGN DATA WRAPPER mysql_fdw  OPTIONS (host '192.168.173.43', port '3306');
    CREATE USER MAPPING FOR local SERVER mysql_svr  OPTIONS (username 'usr_fdw', password '123456');
    CREATE FOREIGN TABLE pg_mysql_tbl_fdw (id integer,vname text)
    SERVER mysql_svr OPTIONS (dbname 'mysql_fdw',table_name 'tbl_fdw');
    
    Oracle:
    CREATE SERVER oradb FOREIGN DATA WRAPPER oracle_fdw
              OPTIONS (dbserver '//dbserver.mydomain.com/ORADB');
              ////dbserver.mydomain.com/ORADB指的是tns的名称
    GRANT USAGE ON FOREIGN SERVER oradb TO pguser;
    CREATE USER MAPPING FOR pguser SERVER oradb  OPTIONS (user 'orauser', password 'orapwd');
    CREATE FOREIGN TABLE oratab (
              id        integer           OPTIONS (key 'true')  NOT NULL,
              text      character varying(30),
              floating  double precision  NOT NULL
           ) SERVER oradb OPTIONS (schema 'ORAUSER', table 'ORATAB');
    
    
    Sqlserver:
    CREATE SERVER mssql_svr
        FOREIGN DATA WRAPPER tds_fdw
        OPTIONS (servername '127.0.0.1', port '1433', database 'tds_fdw_test');
    
    CREATE USER MAPPING FOR postgres
        SERVER mssql_svr 
        OPTIONS (username 'sa', password 'xxxx');
    
        
    CREATE FOREIGN TABLE mssql_table (
        id integer,
        data varchar)
        SERVER mssql_svr
        OPTIONS (table_name 'dbo.mytable');
    
    
    alter server:
    ALTER SERVER foo  OPTIONS (SET host 'baz');
    alter user mapping:
    ALTER USER MAPPING FOR bob SERVER foo OPTIONS (SET password 'public');
    alter foreign table:
    ALTER FOREIGN TABLE myschema.distributors OPTIONS (ADD opt1 'value', SET opt2 'value2', DROP opt3 'value3');
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  • 原文地址:https://www.cnblogs.com/Guroer/p/6117693.html
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