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第二个工具是oss_fdw,通过它可以将OSS和PG以及PPAS打通,在交易型业务上获取的数据可以很容易地存储到OSS上并且最终导入到Greenplum上,所以通过云做交易业务的用户能够很容易地将数据导入到Greenplum进行数据分析。 第三个工具是pgsql2pgsql,它支持了整个Postgre家族,从PPAS到Greenplum都是兼容的,只需要经过简单的配置就...
-- 设置模式查找路径 set search_path to rds; -- 建立客户原始数据表 create table customer ( customer_number int primary key, customer_name varchar(30), customer_street_address varchar(30), customer_zip_code int, customer_city varchar(30), customer_state varchar(2) ); comment on table custom...
where year_month=year*100+month and year_month<to_char(current_date,'yyyymm')::integer group by month_sk,product_sk,year_month; 3. 定期装载按月汇总只需要定期执行,不涉及实时性问题。fn_month_sum函数用于定期装载月销售订单周期快照事实表,函数定义如下。 代码语言:javascript 代码运行次数:0 运行 AI...
selectto_char(to_number(COALESCE(null, to_char(now(),'yyyyMMdd')||'00000'),'9999999999999') +1,'9999999999999') -- 5、将生成的数字类型的批次号转换为字符串类型的,将批次号最前面的空格去掉 selectto_char(to_number(COALESCE(null, to_char(now(),'yyyyMMdd')||'00000'),'9999999999999') +1...
selectto_char(to_number(COALESCE(null, to_char(now(),'yyyyMMdd')||'00000'),'9999999999999') +1,'9999999999999') -- 5、将生成的数字类型的批次号转换为字符串类型的,将批次号最前面的空格去掉 selectto_char(to_number(COALESCE(null, to_char(now(),'yyyyMMdd')||'00000'),'9999999999999') +1...
If you have an odd number of hosts to test, you can run in serial test mode (-r n). 如果有奇数的测试主机,可以运行为串行测试模式(-r n)。 Parent topic: Validating Your Systems 父主题:验证系统。 (2)验证磁盘 IO 和内存带宽 - Validating Disk I/O and Memory Bandwidth To test disk and...
Identify and note the current version number. Stop PXF as described inStopping the Service. Note:If this is your first installation of a PXF package, and the$GPHOME/pxfdirectory exists in your Greenplum installation, you may choose to remove the directory on all Greenplum hosts...
If you need to use a JDBC URL with certain additional settings, paste it in theURLfield. The general URL to use is as follows: Format:jdbc:postgresql://<host_address>:<port_number>/<database_name> Example:jdbc:postgresql://127.0.0.1:5432/myDatabase ...
A table is considered to have a balanced distribution if all segments have roughly the same number of rows. If you run this query on a replicated table, it fails because Greenplum Database does not permit user queries to reference the system columngp_segment_id(or the system columnsctid,cmi...