2.3 用正则表达式进行词块划分 2.3 用正则表达式进行词块划分 要找到一个给定的句子的词块结构，RegexpParser 词块划分器以一个没有词符被划分的平面结构开始。词块划分规则轮流应用，依次更新词块结构。一旦所有的规则都被调用，返回生成的词块结构。 2.3 显示了一个由 2 个规则组成的简单的词块语法。第一条规则匹配一个可选的限定词或所有格...

Package ID Specifications Package ID specifications Specification grammar Example specifications Brevity of specifications Package ID Specifications Package ID specificat...

DROP TYPE Synopsis Syntax Diagram Grammar Semantics Examples See also DROP TYPE Synopsis The DROP TYPE statement removes an existing user-defined data type. Syntax...

10. 完整的语法规范 10. 完整的语法规范 这是完整的Python语法，它被送入解析器生成器，以生成解析Python源文件的解析器： # Grammar for Python   # NOTE WELL: You should also follow all the steps listed at # https://devguide.p...

DROP KEYSPACE Synopsis Syntax Diagram Grammar Semantics Examples See also DROP KEYSPACE Synopsis The DROP KEYSPACE statement removes a keyspace from the system. Sy...

DROP TABLE Synopsis Syntax Diagram Grammar Semantics See Also DROP TABLE AttentionThis page documents an earlier version. Go to the latest (v2.1)version. Synopsis The...

DROP DATABASE Description This statement is used to delete the database Grammar: DROP DATABASE [IF EXISTS] db_name; example keyword DROP DATABASE Description This statement ...

DROP DATABASE Description This statement is used to delete the database Grammar: DROP DATABASE [IF EXISTS] db_name; example keyword DROP DATABASE Description This statemen...

DROP DATABASE Description This statement is used to delete the database Grammar: DROP DATABASE [IF EXISTS] db_name; example keyword DROP DATABASE Description This statement ...

ALTER-TABLE-COLUMN Name Description Example Keywords Best Practice ALTER-TABLE-COLUMN Name ALTER TABLE COLUMN Description This statement is used to perform a schema chan...