dbta

Cloud Computing

Alteryx, Inc., an AI-ready data and analytics company, is expanding its cloud-native analytics capabilities with Live Query for Snowflake—enabling organizations to execute data transformation, ...
搜狐

面试官：MySQL BETWEEN AND 语句包括边界吗？

使用数据库时，我们经常会用到范围查询，今天来聊一聊 MySQL 的 BETWEEN AND 语句。 SELECT* FROMtest3 WHEREidBETWEEN2AND6; 查询结果如下： 可以看到，对 id 做范围查询，包含了边界值2 和 6， 是一个闭区间。 对 date 做范围查询 SELECT* FROMtest3 ...
archive

Joe Celko's SQL for smarties : advanced SQL programming

remove-circle Internet Archive's in-browser bookreader "theater" requires JavaScript to be enabled. It appears your browser does not have it turned on. Please see ...
GitHub

set-or-change-the-database-collation.md

This article describes how to set or change the database collation by using SQL Server Management Studio (SSMS) or [!INCLUDE tsql]. If no database collation is specified, the server collation is used.
cybernews

Thousands of Humana customers have their medical data leaked online by threat actors

An SQL database containing what appears to be highly sensitive health insurance data of more than 6,000 patients has been leaked on a popular hacker forum. The author of the post claims that the data ...
搜狐

MySQL 索引设计（函数索引）-爱可生

本篇主要介绍 MySQL 的函数索引（也叫表达式索引）。 通常来讲，索引都是基于字段本身或者字段前缀（第 20 篇），而函数索引是基于字段本身加上函数、操作符、表达式等计算而来。如果将表达式或者操作符也看做函数的话，简单来说，这样的索引就可以统称 ...