## C++20 ♥ SQL John R Bandela, MD ## Overview SQL C++ Example Implementation techniques fixed_string meta_struct Parsing compile time strings into meta_structures  ## Overview SQL C++ Example Implementation Techniques https://github.com/google/cpp-from-the-sky-down/tree/master/meta_struct_20/cppcon_version ## SQL Probably the highest level mainstream HOPE YOU'RE HAPPY. AND I HOPE YOU'VE LEARNED TO SANITIZE YOUR DATABASE INPUTS. ## Avoiding SQL Injection Attacks SELECT orders.id, name, item, price, discount_code FROM orders JOIN customers ON

pitfalls in Firebird SQL Paul Vinkenoog Version 1.2, 30 June 2020 ## Table of Contents 1. What is NULL? ..... 4 1.1. NULL as a default state ..... 4 2. NULL support in Firebird SQL ..... 6 2.1. Disallowing operations will render the entire expression NULL. This guide explores the behaviour of NULL in Firebird SQL, points out common pitfalls and shows you how to deal safely with expressions that contain NULL or reference to refresh your memory, go to the summary at the end of the guide. ## So — what is it? In SQL, NULL is not a value. It is a state indicating that an item's value is unknown or nonexistent.

## TiDB: HBase分布式事务与SQL实现 ## About me • TiDB & Codis founder • Golang expert • Distributed database developer • Currently, CEO and co-founder of PingCAP liuqi@pingcap.com https://github.com/pingcap/tidb What did they say? “Nothing is hotter than SQL-on-Hadoop, and now SQL-on-HBase is fast approaching equal hotness status” Form HBaseCon 2015 We want more! SQL + Transaction(ACID) ## TiDB Features ## • MySQL-client MySQL-client Load Balancer MySQL Protocol Server MySQL Protocol Server TiDB SQL Layer TiDB SQL Layer Transactional KV Storage KV KV KV KV ### AH. HBase • First things first ☐ Need

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Data types, functions, and operators 73 2.3.2 Indexing and constraints 73 2.3.3 SQL statements 74 2.3.4 Advanced SQL features 74 2.3.5 Data definition language (DDL) 75  3.3 Explore SQL with TiDB ··· 116 3.3.1 Category ··· 116 3.3.2 Show, create and drop a database ··· 116 3.3.3 Create

языку SQL CYБД Firebird 3.0 Firebird 3.0.4 8 августа 2018 — v.0051-1  Gold Sponsor ##### Руководство по языку SQL СУБД 1. Структура языка ..... 22 Общие сведения ..... 22 Подмножества SQL ..... 22 Диалекты SQL ..... 22 Действия при ошибках ..... 23 Основные сведения: операторы, предложения Особенности BLOB ..... 45 Массивы ..... 46 Специальные типы данных ..... 47 Тип данных SQL_NULL ..... 47 Преобразование типов данных ..... 49 Явное преобразование типов данных ..... 49

License Notice in the Appendix This volume represents a compilation of topics concerning Firebird’s SQL language written by members of the Russian-speaking community of Firebird developers and users. In under the auspices of the Firebird Documentation Project. ## Table of Contents 1. About the Firebird SQL Language Reference: for Firebird 2.5 ..... 13 1.1. Subject Matter ..... 13 1.2. Authorship ... 3. Acknowledgments ..... 15 2. SQL Language Structure ..... 17 2.1. Background to Firebird's SQL Language ..... 17 2.1.1. SQL Flavours ..... 17 2.1.2. SQL Dialects ..... 17 2.1.3. Error Conditions