我敢打赌,系统正试图自动忽略频繁出现的单词。这可以解释为什么您无法找到“仅”但可以找到“仅”。你能搜索'a','an',...
您给出的不起作用的单词列表看起来像是一些非常常见的单词,这些单词通常不是句子中的主要单词。鉴于此,它们不太可能是您在全文搜索中搜索的词。
您正在寻找包含单词“that”并且包含该单词是您在文章中唯一的事实的文章的几率是多少?
我想我找到了你的名单......具有讽刺意味的是,来自我创办的最后一家公司的 wiki 页面......:http ://www.sugarcrm.com/wiki/index.php?title=Overview_of_Full_Text_Stop_Words#Default_Stop_Words_.28for_English.29
2.10.3 Modifying the Default Stoplist The default stoplist is always named CTXSYS.DEFAULT_STOPLIST. You can use the following procedures to modify this stoplist:
• CTX_DDL.ADD_STOPWORD
• CTX_DDL.REMOVE_STOPWORD
• CTX_DDL.ADD_STOPTHEME
• CTX_DDL.ADD_STOPCLASS
When you modify CTXSYS.DEFAULT_STOPLIST with the CTX_DDL package, you must re-create your index for the changes to take effect.
默认停用词列表:
a he out up
be more their at
had one will from
it than and is
only when corp not
she also in says
was by ms to
about her over
because most there
has or with
its that are
of which could
some an inc
we can mz
after his s
been mr they
have other would
last the as
on who for
such any into
were co no
all if so
but mrs this
更新 - Oracle 提供的一份不错的白皮书,其中包括全文搜索的工作原理,可从以下网址下载:http ://www.oracle.com/technology/products/text/pdf/text_techwp.pdf 。他们提到了停用词和有一个默认列表的事实,但没有提到这些词本身。