Firebird 2.5 Language Reference Dmitry Filippov, Alexander Karpeykin, Alexey Kovyazin, Dmitry Kuzmenko, Denis Simonov, Paul Vinkenoog, Dmitry Yemanov Version 1.16, 15 December 2023 The source of much Project. Preface 1 Table of Contents 1. About the Firebird SQL Language Reference: for Firebird 2.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 1.1. Subject Matter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2.5. Operators and Special Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

языку SQL Firebird 2.5 – Обновление справочника языка SQL Всё новое в языке SQL Firebird начиная с InterBase 6 Paul Vinkenoog 8 октября 2011 года, версия 1.1 — охватывает Firebird 2.5 и 2.5.1 (Примечание Что содержит данный документ Охватываемые версии Авторство Благодарности 2. Новое в Firebird 2.5 Зарезервированные и ключевые слова Дополнительно Типы и подтипы данных Язык определения данных определённые пользователем. Также известные как внешние функции). Полная документация по Firebird 2.5 SQL включает в себя: • InterBase 6.0 beta SQL Reference (LangRef.pdf и/или SQLRef.html); • Данный

如果参数是一个近似值， round() 表达式的结果可能和 MySQL 不太一样 1. TiDB > SELECT ROUND(2.5), ROUND(25E-1); 2. +------------+--------------+ 3. | ROUND(2.5) | ROUND(25E-1) | 4. +------------+--------------+ 5. | 3 t (d DECIMAL(10,0)); 2. Query OK, 0 rows affected (0.01 sec) 3. 4. TiDB > INSERT INTO t VALUES(2.5),(2.5E0); 5. Query OK, 2 rows affected, 2 warnings (0.00 sec) 6. 7. TiDB > SELECT d FROM t; 8. +------+ odbc、java(jdbc)、 Perl、Python、PHP、Ruby 和 C。 TiDB 兼容 MySQL(5.6、5.7) 的所有连接器和 API，包括： MySQL Connector/C MySQL Connector/C++ MySQL Connector/J MySQL Connector/Net MySQL Connector/ODBC MySQL Connector/Python MySQL C API

export support) ○ wealth of GUI tools ○ Great integration with third-party tools. Can be used from Python, R and other statistical tools. 4 File Format Comparison (text based) version 2 run PureAloha files can be loaded into spreadsheets to create Pivot Charts 12 Using SQLite Result File from Python Required packages ● Sqlite3 ○ Access SQLite databases ● NumPy/SciPy ○ Numerical scientific computing computing ● MatPlotLib ○ Comprehensive 2D plotting 13 Using SQLite Result File from Python 2 How to access data from Python. import sqlite3 conn = sqlite3.connect(fileName) conn.row_factory

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

With Rows ..........................................................................................7 2.5. Querying a Table ................................................................................ .....................739 40. PL/Python - Python Procedural Language...............................................................................740 40.1. PL/Python Functions ...................... PL/Perl Server-Side Language Changes..........................................1449 E.23.3.10. PL/Python Server-Side Language Changes...................................1450 E.23.3.11. psql Changes.....

With Rows ..........................................................................................7 2.5. Querying a Table ................................................................................ .....................738 40. PL/Python - Python Procedural Language...............................................................................740 40.1. PL/Python Functions ...................... PL/Perl Server-Side Language Changes..........................................1434 E.14.3.10. PL/Python Server-Side Language Changes...................................1435 E.14.3.11. psql Changes.....

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

Extensions 0 Python Data Science Module Package 269 Python Data Science Module Package 0 Python Data Science Modules 270 Installing the Python Data Science Module Package 273 Uninstalling the Python Data Science 459 PL/Python Language 460 PL/Python Language 0 About Greenplum PL/Python 460 Greenplum Database PL/Python Limitations 460 Enabling and Removing PL/Python support 460 Enabling PL/Python Support 460 460 Removing PL/Python Support 461 Developing Functions with PL/Python 461 Data Type Mapping 461 Arrays and Lists 462 Composite Types 463 Set-Returning Functions 464 Running and Preparing SQL Queries

Extensions 0 Python Data Science Module Package 203 Python Data Science Module Package 0 Python Data Science Modules 203 Installing the Python Data Science Module Package 206 Uninstalling the Python Data Science 394 PL/Python Language 395 PL/Python Language 0 About Greenplum PL/Python 395 Greenplum Database PL/Python Limitations 395 Enabling and Removing PL/Python support 395 Enabling PL/Python Support 395 395 Removing PL/Python Support 396 Developing Functions with PL/Python 396 Data Type Mapping 396 Arrays and Lists 397 Composite Types 398 Set-Returning Functions 399 Running and Preparing SQL Queries