JAVAEE 课程系列 ————————————————————————————— 1 更多 Java –大数据 –前端 –python 人工智能资料下载，可访问百度：尚硅谷官网 MyBatis 框架 尚硅谷 java 研究院 版本：V 1.0 第 1 章 MyBatis 简介 1.1 MyBatis 历史 1）MyBatis 是 Apache 的一个开源项目 iBatis, 2010 基于全映射的全自动框架，大量字段的 POJO 进行部分映射时比较困难。导致数据 库性能下降 JAVAEE 课程系列 ————————————————————————————— 2 更多 Java –大数据 –前端 –python 人工智能资料下载，可访问百度：尚硅谷官网 3） MyBatis 1 对开发人员而言，核心 sql 还是需要自己优化 2 sql 和 java 编码分开，功能边界清晰，一个专注业务、一个专注数据 https://github.com/mybatis/mybatis-3/ JAVAEE 课程系列 ————————————————————————————— 3 更多 Java –大数据 –前端 –python 人工智能资料下载，可访问百度：尚硅谷官网 第 2 章 MyBatis HelloWorld 2.1 开发环境的准备 1) 导入 MyBatis 框架的 jar 包、Mysql 驱动包、log4j

Greenplum数据仓库 UDW Copyright © 2012-2021 UCloud 优刻得 7/206 1. Client：访问 UDW 的客⼾端 ⽀持通过 JDBC、ODBC、PHP、Python、命令⾏ Sql 等⽅式访问 UDW 2. Master Node：访问 UDW 数据仓库的⼊⼝ 接收客⼾端的连接请求 负责权限认证 处理 SQL 命令 调度分发执⾏计划 汇总 Segment Greenplum数据仓库 UDW Copyright © 2012-2021 UCloud 优刻得 25/206 2.python客⼾端访问 $yum install python-psycopg2 ⽰例1. 连接UDW testconn.py #!/usr/bin/python import psycopg2 conn = psycopg2.connect(database="dev", host="hostIP", port="port") print "Opened database successfully" 执⾏ python testconn.py ⽰例2. 创建⼀个表 createTable.py #!/usr/bin/python import psycopg2 conn = psycopg2.connect(database="dev", user="username"

Data Science Package for Python 433 Data Science Package for Python 2.7 Modules 434 Data Science Package for Python 3.9 Modules 437 Installing a Data Science Package for Python 442 Uninstalling a Data Data Science Package for Python 443 R Data Science Library Package 443 R Data Science Libraries 444 Installing the R Data Science Library Package 446 Uninstalling the R Data Science Library Package 447 Developing PL/Container functions 956 Basic Function Examples 958 About PL/Python 2 Functions in PL/Container 959 About PL/Python 3 Functions in PL/Container 960 Developing CUDA API Functions with PL/Container

Data Science Package for Python 440 Data Science Package for Python 2.7 Modules 440 Data Science Package for Python 3.9 Modules 443 Installing a Data Science Package for Python 448 Uninstalling a Data Data Science Package for Python 449 R Data Science Library Package 450 R Data Science Libraries 450 VMware Greenplum 6 Documentation VMware, Inc 18 Installing the R Data Science Library Package 451 Examples 947 VMware Greenplum 6 Documentation VMware, Inc 39 About PL/Python 2 Functions in PL/Container 948 About PL/Python 3 Functions in PL/Container 949 Developing CUDA API Functions with PL/Container

Data Science Package for Python 425 Data Science Package for Python 2.7 Modules 425 Data Science Package for Python 3.9 Modules 428 Installing a Data Science Package for Python 433 Uninstalling a Data Data Science Package for Python 434 R Data Science Library Package 435 R Data Science Libraries 435 Installing the R Data Science Library Package 436 Uninstalling the R Data Science Library Package 437 Developing PL/Container functions 916 Basic Function Examples 918 About PL/Python 2 Functions in PL/Container 918 About PL/Python 3 Functions in PL/Container 920 Developing CUDA API Functions with PL/Container

Data Science Package for Python 415 Data Science Package for Python 2.7 Modules 415 Data Science Package for Python 3.9 Modules 418 Installing a Data Science Package for Python 423 Uninstalling a Data Data Science Package for Python 424 R Data Science Library Package 425 R Data Science Libraries 425 Installing the R Data Science Library Package 427 Uninstalling the R Data Science Library Package 428 Developing PL/Container functions 927 Basic Function Examples 929 About PL/Python 2 Functions in PL/Container 929 About PL/Python 3 Functions in PL/Container 931 Developing CUDA API Functions with PL/Container

Data Science Package for Python 422 Data Science Package for Python 2.7 Modules 422 Data Science Package for Python 3.9 Modules 425 Installing a Data Science Package for Python 431 Uninstalling a Data Data Science Package for Python 432 R Data Science Library Package 432 R Data Science Libraries 432 Installing the R Data Science Library Package 434 Uninstalling the R Data Science Library Package 434 PL/Container functions 914 Examples 916 About PL/Container Running PL/Python 917 About PL/Container Running PL/Python with Python 3 918 About PL/Container Running PL/R 918 PL/Java Language 919 About

Platform Requirements 141 Operating System Requirements 141 Software Dependencies 141 Java 143 Python 143 VMware Greenplum Tools and Extensions Compatibility 143 Client Tools 143 Extensions 144 Data Data Science Package for Python 225 Data Science Package for Python 3.9 Modules 225 Installing a Data Science Package for Python 231 Uninstalling a Data Science Package for Python 232 R Data Science Library Developing PL/Container functions 748 Basic Function Examples 750 About PL/Python 2 Functions in PL/Container 750 About PL/Python 3 Functions in PL/Container 752 Developing CUDA API Functions with PL/Container

Geospatial Extensions 358 Python Data Science Module Package 359 Python Data Science Modules 359 Installing the Python Data Science Module Package 362 Uninstalling the Python Data Science Module Package PL/Container functions 799 Examples 800 About PL/Container Running PL/Python 801 About PL/Container Running PL/Python with Python 3 802 About PL/Container Running PL/R 802 PL/Java Language 803 About 830 PL/Python Language 830 VMware Tanzu Greenplum 6 Documentation VMware, Inc 40 About Greenplum PL/Python 831 Greenplum Database PL/Python Limitations 831 Enabling and Removing PL/Python support

Extensions 0 Python Data Science Module Package 278 Python Data Science Module Package 0 Python Data Science Modules 278 Installing the Python Data Science Module Package 281 Uninstalling the Python Data Science 469 PL/Python Language 469 PL/Python Language 0 About Greenplum PL/Python 469 Greenplum Database PL/Python Limitations 469 Enabling and Removing PL/Python support 470 Enabling PL/Python Support 470 470 Removing PL/Python Support 470 Developing Functions with PL/Python 470 Data Type Mapping 471 Arrays and Lists 471 Composite Types 472 Set-Returning Functions 473 Running and Preparing SQL Queries