Is there any boolean type in Oracle databases?(Oracle 数据库中是否有任何布尔类型?)
问题描述
Oracle 数据库中是否有类似于 Ms SQL Server 中的 BIT
数据类型的布尔类型?
Is there any Boolean type in Oracle databases, similar to the BIT
datatype in Ms SQL Server?
推荐答案
不仅 Oracle 的 SQL(不是 PL/SQL)中缺少布尔数据类型,而且他们也没有明确建议使用什么来代替.请参阅此主题 在问.从推荐 CHAR(1) 'Y'/'N'
他们切换到 NUMBER(1) 0/1
当有人指出 'Y'/'N'
取决于英语,而例如德国程序员可能会使用 'J'/'N'
代替.
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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