GreenPlum v3.1 Beta – 应用软件：SQL语句 • 数据导入测试 – A - 67858566 rows – B - 80088742 rows – C - 372844366 rows – D - 75042462 rows – E - 2521897 rows 结论：超过6亿条历史数据导入，用时少于1.5小时，性能非常卓越。 • 全表扫描测试 – DWA测试环境：针对表C（372844366 9587064 32秒 1.4G 9637329 24x CDFISM ST 支票帐户档案表 40分 1.74G 5147249 46秒 1.88 5187579 52x CDFISPA D 支票支付档表 18分 1.4G 1857698 4 48秒 1.51 18755489 22.5x CIFISGR I 集团用户业务信息档案表 55分 4.31G 1167530 3 系统计算耗时与Oracle系统比较如下： table typ e SQL 结果 Oracle 测试耗时 结果 GP测 试耗时 GP提升 倍数 FS_Z H_CD FISPA D 合 并 字 段 测 试 select count(*) from stage.fs_zh_cdfispad; 36396887 47.7s 37528247 1.2s 39.7x select

也是一个技术孵化器。通过每半年发布一次的创新版，快速集成 openEuler 以及其他社区的最新技术成 果，将社区验证成熟的特性逐步回合到发行版中。这些新特性以单个开源项目的方式存在于社区，方便开发者获得源代 码，也方便其他开源社区使用。 社区中的最新技术成果持续合入发行版，发行版通过用户反馈反哺技术，激发社区创新活力，从而不断孵化新技术。 发行版平台和技术孵化器互相促进、互相推动、牵引版本持续演进。 conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. d. 测试步骤 1. 分别选取不同的 OS 镜像创建三台 ARM 实例并搭建 Greenplum 6.7.0 三节点集群环境。 2. 在 Master 应用 TPC-DS tools， 生成 5GB

的数据。如果采用深度压缩算法，处理能力还会 再打些折扣。 3) 根据外部表工作原因，PrimaryInstance 从 gpfdist 服务抓取数据 (D) 是随机的，与分布策略无关。假设数据分布平坦且顺序随机， 系统中总共有 N 个 Primary Instance，则，D 中有 (N-1)/N 的数 据需要发送到其他节点。因此，节点之间的网络流量占用大约为 gpfdist 输出带宽的 2 倍。再考虑 Mirror 你会发现性能有很大提升。 2) 尽量不要写出自己理解起来都有困难的 SQL。比如： s e l e c t t a a l e f t j o i n t b b o n a . i d = b . i d w h e r e b.timeflag=’20140825’; 你会发现执行计划中没有 left join，因为这个 where 条件导致 left join 直接被执行计划降级为 执行了此 查询并显示了原始插入的数值。SSN 数值对于任何其他用户来说都只 会看到 ###-##-6789 这样的显示内容，这依据于 ESA 上创建且下推 到本地 PEP 流程的策略。 当你每次输入查询码的时候，添加这些功能会有点麻烦，而且你可能 会希望限制用户对基础数据表的访问。如果创建一个视图自动应用功 能的话就方便得多。 CREATEVIEW v_sample_ssn_parts AS SELECT

/usr/lib64/psqlodbc.so Setup64 = /usr/lib64/libodbcpsqlS.so FileUsage = 1 3. 测试ODBC驱动是否安装成功 # odbcinst -q -d [PostgreSQL] 如果出现以上输出，代表在这台机器上已成功安装了PostgreSQL的ODBC驱动。 4. 编辑/etc/odbc.ini⽂件配置ODBC连接 快速上⼿ Greenplum数据仓库 bashrc 备注：/data/greenplum-client是greenplum-client的安装路径 4） 连接数据库 psql -h hostIP（或域名） –U username -d database -p port –W 1.2 udw（udpg）客⼾端⽅式访问（以Centos为例） 如果你选择的数据仓库类型是udpg、可以采⽤下⾯的⽅式访问 快速上⼿ Greenplum数据仓库 source ~/.bashrc 备注：/data/udw-client是udw-client的安装路径 4） 连接数据库 psql -h hostIP（或域名） –U username -d database -p port –W 快速上⼿ Greenplum数据仓库 UDW Copyright © 2012-2021 UCloud 优刻得 25/206 2.python客⼾端访问

structures. Greenplum now eliminates alien nodes before execution for entry db. 13997 The psql command \d+ now shows correct index information for append-only auxiliary tables. 13739 Resolves an issue where 181803382 Resolves an issue where gpinitsystem could throw an error when running with the debug (- D) option. 32157 Resolves an issue where gpexpand would repeat the error Port used multiple library is updated to version 3.10.2; PostGIS now includes support for the ST_Subdivide, ST_ClipByBox2D, ST_VoronoiLines, and ST_VoronoiPolygons functions. Resolved Issues Server 32247, 13532 : Prevents

structures. Greenplum now eliminates alien nodes before execution for entry db. 13997 The psql command \d+ now shows correct index information for append-only auxiliary tables. 13739 Resolves an issue where 181803382 Resolves an issue where gpinitsystem could throw an error when running with the debug (-D) option. 32157 Resolves an issue where gpexpand would repeat the error Port used multiple library is updated to version 3.10.2; PostGIS now includes support for the ST_Subdivide, ST_ClipByBox2D, ST_VoronoiLines, and ST_VoronoiPolygons functions. Resolved Issues Server 32247, 13532 Prevents

AS clause. select * from json_to_record(‘{“a”:1,“b”:[1,2,3],“c”:“bar”}’) as x(a int, b text, d text) a | b | d —+———+— 1 | [1,2,3] | json_to_recordset(json) jsonb_to_recordset(jsonb) setof record Builds AS clause. select * from json_to_record(‘{“a”:1,“b”:[1,2,3],“c”:“bar”}’) as x(a int, b text, d text) a | b | d —+———+— 1 | [1,2,3] | json_to_recordset(json) jsonb_to_recordset(jsonb) setof record Builds structures. Greenplum now eliminates alien nodes before execution for entry db. 13997 The psql command \d+ now shows correct index information for append-only auxiliary tables. 13739 Resolves an issue where

or gpstate would fail if the MASTER_DATA_DIRECTORY environment variable was not set, even if the -d option was specified to provide the directory. 16356 The gpcheckperf utility was changed to ensure structures. Greenplum now eliminates alien nodes before execution for entry db. 13997 The psql command \d+ now shows correct index information for append-only auxiliary tables. 13739 Resolves an issue where 181803382 Resolves an issue where gpinitsystem could throw an error when running with the debug (- D) option. 32157 Resolves an issue where gpexpand would repeat the error Port used multiple

or gpstate would fail if the MASTER_DATA_DIRECTORY environment variable was not set, even if the -d option was specified to provide the directory. 16356 The gpcheckperf utility was changed to ensure structures. Greenplum now eliminates alien nodes before execution for entry db. 13997 The psql command \d+ now shows correct index information for append-only auxiliary tables. 13739 Resolves an issue where Inc. 169 Resolves an issue where gpinitsystem could throw an error when running with the debug (- D) option. 32157 Resolves an issue where gpexpand would repeat the error Port used multiple

the Notes. select * from json_populate_record(null::myrowtype, ‘{“a”: 1, “b”: [“2”, “a b”], “c”: {“d”: 4, “e”: “a b c”}}’) a | b | c —+———–+————- 1 | {2,“a b”} | (4,“a b c”) json_populate_recordset(base “c”:[1,2,3],“e”:“bar”,“r”: {“a”: 123, “b”: “a b c”}}’) as x(a int, b text, c int[], d text, r myrowtype) a | b | c | d | r —+———+———+—+————— 1 | [1,2,3] | {1,2,3} | | (123,“a b c”) json_to_recordset(json) regions, the “Standard_D13_v2” is also available. Coordinator Instance Type Memory vCPUs Data Disks D13_v2 56 8 1 H8 56 8 1 Segments Instance Type Memory vCPUs Data Disks D13_v2 56 8 2 H8 56 8 2