问题描述
Oracle 数据库中是否有布尔类型，类似于 Ms SQL Server 中的 BIT 数据类型?
Is there any Boolean type in Oracle databases, similar to the BIT datatype in Ms SQL Server?
推荐答案
Oracle 的 SQL(不是 PL/SQL)中不仅缺少布尔数据类型，而且他们也没有明确的建议来代替使用什么.请参阅 此线程 在 asktom 上.当有人指出 'Y'/' 时，他们从推荐 取决于英语，而例如德国程序员可能会改用 CHAR(1) 'Y'/'N' 切换到 NUMBER(1) 0/1N''J'/'N'.
Not only is the boolean datatype missing in Oracle's SQL (not PL/SQL), but they also have no clear recommendation about what to use instead. See this thread on asktom. From recommending CHAR(1) 'Y'/'N' they switch to NUMBER(1) 0/1 when someone points out that 'Y'/'N' depends on the English language, while e.g. German programmers might use 'J'/'N' instead.
最糟糕的是，他们为这个愚蠢的决定辩护，就像他们为 ''=NULL 愚蠢辩护一样.
The worst thing is that they defend this stupid decision just like they defend the ''=NULL stupidity.
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