代码语言:text AI代码解释 SELECT LPAD (' ', DECODE (l.xidusn, 0, 3, 0))|| l.oracle_usernameUser_name,o.owner,o.object_name,o.object_type,s.sid,s.serial#FROM v$locked_object l, dba_objects o, v$session sWHERE l.object_id = o.object_id AND l.session_id = s.sidORDER BY o....
ACONTEXTindex is the basic type of Oracle Text index. This is an index on a text column. ACONTEXTindex is useful when your source text consists of many large, coherent documents. Query this index with theCONTAINSoperator in theWHEREclause of aSELECTstatement. This index requires manual synchro...
XMLTYPE数据存储支持此XML搜索索引。 在存在这样的XML搜索索引的情况下,XMLEXISTS被无缝地重写为CONTAINS查询。 创建XML Search Index时,将在Oracle Text内部表中实现XML文档的Binary PDOM。 来自Oracle Text索引的后期评估被重定向为与存储在此内部表中的PDOM背道而驰。 创建XML Search Index: exec CTX_DDL.CREATE...
TOKEN_TYPEは参照ファンクションであり、他のファンクション(CTX_DDL.OPTIMIZE_INDEX、CTX_REPORT.TOKEN_INFOなど)に対する入力として主に使用されます。 関連項目: CTX_REPORT.INDEX_STATSプロシージャの出力の例は、『Oracle Textリファレンス』を参照 CTX_REPORT.QUERY_LOG_SUMMARYプロシージャ...
Enter 'html' for an HTML report, or 'text' for plain text Defaults to 'html' Enter value for report_type: //提示你输入生成报告类型,默认为HTML,回车即可 Type Specified: html Instances in this Workload Repository schema ~~~ DB Id Inst Num DB Name Instance Host --- --- --- --- -...
CREATE INDEX doc_index ON docs(text) INDEXTYPE IS CTXSYS.CONTEXT; (5)使用 CONTAINS 函数,发出基于内容的文档查询。例如: SELECT id FROM docs WHERE CONTAINS (text, 'first') > 0; 这将在文本列包含单词 first (即文档1) 的 docs 中查找所有行。语句中的>0部分是有效的Orac...
(1,'日本オラクル株式会社'); INSERT INTO testtab VALUES (2,'ora oracle oracular oracy'); COMMIT; BEGIN CTX_DDL.CREATE_PREFERENCE('jvl','JAPANESE_VGRAM_LEXER'); END; / CREATE INDEX testidx ON testtab (text) INDEXTYPE IS CTXSYS.CONTEXT PARAMETERS ('LEXER jvl'); Copyright© 2011, ...
一.OracleText 组件说明 在说明之前,我们先用如下SQL 查看一下DB中的组件: SQL> col comp_id for a15 SQL> col version for a15 SQL> col comp_name for a30 SQL> select comp_id,comp_name,versionfrom dba_registry ; COMP_ID COMP_NAME VERSION ...
(3, 'oracle and text'); insert into queries values (4, 'market share'); create index queryx on queries(query_string) indextype is ctxsys.ctxrule; select query_id from queries where matches(query_string, 'Oracle announced that its market share in databases increased over the last year.'...
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