sqlite_fdw 使用
Postgresql 提供了外键表的功能,sqlite_fdw唯一的遗憾是只能select,希望github上能够尽快更新吧! 下面我把sqlite_fdw 如何使用介绍下! 1、下载sqlite_fdw 软件包: git clonehttps://github.com/gleu/sqlite_fdw或者下载 .ZIP压缩文件 make [postgres@mxl sqlite_fdw]$ make gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -O2 -fpic -I. -I./ -I/usr/local/pgsql/include/server -I/usr/local/pgsql/include/internal -D_GNU_SOURCE -I/usr/include/libxml2 -c -o src/sqlite_fdw.o src/sqlite_fdw.c gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -O2 -fpic -shared -o sqlite_fdw.so src/sqlite_fdw.o -L/usr/local/pgsql/lib -Wl,--as-needed -Wl,-rpath,'/usr/local/pgsql/lib',--enable-new-dtags -lsqlite3 make install [root@mxl sqlite_fdw]# make install /bin/mkdir -p '/usr/local/pgsql/lib' /bin/mkdir -p '/usr/local/pgsql/share/extension' /bin/mkdir -p '/usr/local/pgsql/share/extension' /bin/mkdir -p '/usr/local/pgsql/share/doc/extension' /usr/bin/install -c -m 755 sqlite_fdw.so '/usr/local/pgsql/lib/sqlite_fdw.so' /usr/bin/install -c -m 644 sqlite_fdw.control '/usr/local/pgsql/share/extension/' /usr/bin/install -c -m 644 sql/sqlite_fdw--0.0.1.sql '/usr/local/pgsql/share/extension/' /usr/bin/install -c -m 644 doc/sqlite_fdw.md '/usr/local/pgsql/share/doc/extension/' 2、在数据库引用sqlite_fdw postgres=# CREATE EXTENSION sqlite_fdw; CREATE EXTENSION postgres=# dx ; List of installed extensions Name | Version | Schema | Description --------------------+---------+------------+----------------------------------------------------------- pg_stat_statements | 1.2 | public | track execution statistics of all SQL statements executed plpgsql | 1.0 | pg_catalog | PL/pgSQL procedural language sqlite_fdw | 0.0.1 | public | SQLite Foreign Data Wrapper uuid-ossp | 1.0 | public | generate universally unique identifiers (UUIDs) (4 rows) 3、创建一个fdw的server CREATE SERVER sqlite_server FOREIGN DATA WRAPPER sqlite_fdw OPTIONS (database '/tmp/localdb.sqlite'); 4、创建外键表 CREATE FOREIGN TABLE fdwuserrole(userid integer,roleid ingeter) SERVER sqlite_server OPTIONS (table 'userrole'); 5、查看外键表server postgres=# des List of foreign servers Name | Owner | Foreign-data wrapper ---------------+----------+---------------------- sqlite_server | postgres | sqlite_fdw (1 row) 6、删除外键表 drop FOREIGN table fdwuserrole; 问题:1 src/sqlite_fdw.c:37:21: error:sqlite3.h: No such file or directory make 的时候提示解析不了sqlite头文件 rpm -Uvhhttp://www6.atomicorp.com/channels/atomic/centos/6/x86_64/RPMS/atomic-release-1.0-21.el6.art.noarch.rpm yum update yum sqlite-devel install -y 问题:2 安装sqlite_fdw的时候需要使用postgres 的pg_config 所以需要把postgres 的环境变量在root 添加一下 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |