–DECODE 函数 CASE expr WHEN comparison_expr1 THEN return_expr1 [WHEN comparison_expr2 THEN return_expr2 WHEN comparison_exprn THEN return_exprn ELSE else_expr] END 使用case表达式,实现IF-THEN-ELSE 的示例: 1、把job_id 为it_prog、st_clerk、sa_rep等职位的员工分别按照1.1/1.15/1.2的比例涨工...
If both arguments in a comparison operation are strings, they are compared as strings. If both arguments are integers, they are compared as integers. Hexadecimal values are treated as binary strings if not compared to a number. If one of the arguments is aTIMESTAMPorDATETIMEcolumn and the oth...
Bug #47925 regression of range optimizer and date comparison in 5.1.39! Submitted: 8 Oct 2009 20:50Modified: 12 Mar 2010 17:17 Reporter: Shane Bester (Platinum Quality Contributor) Email Updates: Status: Closed Impact on me: None Category: MySQL Server: Data TypesSeverity: S1 (Critical...
The following rules describe how conversion occurs for comparison operations: ... 省略一万字 ... In all other cases, the arguments are compared as floating-point (real) numbers. 也就是说,他会将等于号的两边转换成浮点数来做比较。 Comparisons that use floating-point numbers (or values that are...
Date Range Comparison Query Posted by:Ray Julich Date: June 29, 2010 08:45AM I'm creating an web-based resource reservation system for my office. The reservations will be stored in a MySQL database. The web form will take 2 parameters (starting date/time & ending date/time), check the...
If both arguments in a comparison operation are strings, they are compared as strings.If both arguments are integers, they are compared as integers.Hexadecimal values are treated as binary strings if not compared to a number.If one of the arguments is a or column and the other argument is a...
GreatSQL是由万里数据库维护的MySQL分支,专注于提升MGR可靠性及性能,支持InnoDB并行查询特性,是适用于金融级应用的MySQL分支版本。 关注作者 引用和评论 推荐阅读 使用gt-checksum 分析迁移对象 GreatSQL社区阅读272 Open WebUI:开源AI交互平台的全面解析 DBLens赞5阅读1.7k ...
https://dev.mysql.com/doc/refman/8.0/en/comparison-operators.html https://dev.mysql.com/doc/refman/8.0/en/type-conversion.html 如果其中一个参数是 TIMESTAMP 或 DATETIME 列,而另一个参数是常量,那么在进行比较之前,会将常量转换为时间戳。这样做是为了对 ODBC 更友好。但IN() 的参数不会这样做。为...
Category:MySQL Server: DMLSeverity:S3 (Non-critical) Version:5.5.5-m3-logOS:Windows (XP Pro) Assigned to:Evgeny PotemkinCPU Architecture:Any Tags:date,regression,STR_TO_DATE [25 Aug 2010 20:32] Tobin Cataldo Description:A STR_TO_DATE comparison to another STR_TO_DATE in the WHERE returns...
Bayes Msp (@wrenchchatrepo) A Model Calling Protocol server that enables LLMs to perform rigorous Bayesian analysis and probabilistic reasoning, including inference, model comparison, and predictive modeling with uncertainty quantification. ⭐ 0 2025-05-07T00:47:41Z Bazel (@aaomidi) Integrates with...