sedna进行xquery查询

血狼debugeeker

发布于 2018-09-20 06:53:14

46100

代码可运行

文章被收录于专栏：debugeeker的专栏debugeeker的专栏

运行总次数：0

代码可运行

有一个文件book.xml:

<books>
	<book>
		<name>The Call Of Wild</name>
		<author>Jack London</author>
		<price>32.5$</price>
		<date>2015-7-6</date>
	</book>
	<book>
		<name>Wuthering Heights</name>
		<author>Emily Bronte</author>
		<price>40$</price>
		<date>2015-7-5</date>
	</book>
</books>

创建books数据库：

[root@localhost xuzhina]#se_cdb books
Creating a database (this can take a few minutes)...
The database 'books' has been created successfully

启动它：

[root@localhost xuzhina]#se_sm books
Starting database recovery or hot-backup restoration...
Database is in consistent state. Starting...
SM has been started in the background mode

创建一个collection叫novel:

[root@localhost xuzhina]#se_term -query "CREATE COLLECTION 'novel'" books
UPDATE is executed successfully

加载进去：

[root@localhost xuzhina]#se_term -query "LOAD 'book.xml' 'book' 'novel'" books
Bulk load succeeded

查询整个文件：

[root@localhost xuzhina]#se_term -query "for \$p in collection('novel')/books return \$p" book
s
<books>
  <book>
    <name>The Call Of Wild</name>
    <author>Jack London</author>
    <price>32.5$</price>
    <date>2015-7-6</date>
  </book>
  <book>
    <name>Wuthering Heights</name>
    <author>Emily Bronte</author>
    <price>40$</price>
    <date>2015-7-5</date>
  </book>
</books>

查询book：

[root@localhost xuzhina]#se_term -query "for \$p in collection('novel')/books/book return \$p"
 books
<book>
  <name>The Call Of Wild</name>
  <author>Jack London</author>
  <price>32.5$</price>
  <date>2015-7-6</date>
</book>
<book>
  <name>Wuthering Heights</name>
  <author>Emily Bronte</author>
  <price>40$</price>
  <date>2015-7-5</date>
</book>

查询某个书名的book：

[root@localhost xuzhina]#se_term -query "for \$p in collection('novel')/books/book[name='The
Call Of Wild'] return \$p" books
<book>
  <name>The Call Of Wild</name>
  <author>Jack London</author>
  <price>32.5$</price>
  <date>2015-7-6</date>
</book>

查询第2本书（记住它的索引是从1开始的）：

[root@localhost xuzhina]#se_term -query "for \$p in collection('novel')/books/book[2] return
\$p" books
<book>
  <name>Wuthering Heights</name>
  <author>Emily Bronte</author>
  <price>40$</price>
  <date>2015-7-5</date>
</book>

查询某个书的书名包括某个词语，比如Call：

[root@localhost xuzhina]#se_term -query "for \$p in collection('novel')/books/book[contains(n
ame, 'Call')] return \$p" books
<book>
  <name>The Call Of Wild</name>
  <author>Jack London</author>
  <price>32.5$</price>
  <date>2015-7-6</date>
</book>