oracle-text

How to sync and optimize an Oracle Text index?

纵饮孤独 提交于 2019-12-03 01:17:57
We want to use a ctxsys.context index type for full text search. But I was quite surprised, that an index of this type is not automatically updated. We have 3 million documents with about 10k updates/inserts/deletes per day. What are your recommendations for syncing and optimizing an Oracle Text index? I think 'SYNC EVERY' option, as described in previous answer only available in Oracle 10g or newer. If you're using older version of Oracle you would have to run sync operation periodically. For example, you can create following stored procedure: CREATE OR REPLACE Procedure sync_ctx_indexes IS

Oracle text search on multiple tables and joins

杀马特。学长 韩版系。学妹 提交于 2019-11-30 16:14:24
I have the following SQL statement. select emp_no,dob,dept_no from v_depts where catsearch (emp_no,'abc',NULL) > 0 or catsearch (dept_no,'abc',NULL) > 0 where v_depts is a view. Now I would like to add one or more tables as join so that I can do text search on columns e.g. employee_details contains employee information and I can join with emp_no I have created index on employee_details table for emp_name column, however I am not able to join with v_depts to search because I modify my sql statement as select a.emp_no,a.dob,a.dept_no from v_depts a left outer join employee_details b on (a.emp_no

Oracle text escaping with curly braces and wildcards

丶灬走出姿态 提交于 2019-11-29 16:18:11
问题 I want to be able to escape the search criteria in an Oracle text query using contains and combine the escaped criteria with wildcards to have "doubly truncated" criteria. (I know my indexes may not be setup for ideal performance, but that is superfluous). I want to be able to use the curly braces syntax for best readability but this doesn't work. According to the top answer on this related (but not duplicate) question, curly braces define complete tokens. Is there any way to disable or work

Oracle: Full text search with condition

*爱你&永不变心* 提交于 2019-11-28 18:27:08
I've created an Oracle Text index like the following: create index my_idx on my_table (text) indextype is ctxsys.context; And I can then do the following: select * from my_table where contains(text, '%blah%') > 0; But lets say we have a have another column in this table, say group_id , and I wanted to do the following query instead: select * from my_table where contains(text, '%blah%') > 0 and group_id = 43; With the above index, Oracle will have to search for all items that contain 'blah' , and then check all of their group_id s. Ideally, I'd prefer to only search the items with group_id = 43

Oracle: Full text search with condition

最后都变了- 提交于 2019-11-27 11:21:35
问题 I've created an Oracle Text index like the following: create index my_idx on my_table (text) indextype is ctxsys.context; And I can then do the following: select * from my_table where contains(text, '%blah%') > 0; But lets say we have a have another column in this table, say group_id , and I wanted to do the following query instead: select * from my_table where contains(text, '%blah%') > 0 and group_id = 43; With the above index, Oracle will have to search for all items that contain 'blah' ,

Does Oracle support full text search?

寵の児 提交于 2019-11-27 04:29:30
Is there an Oracle equivalent to MS SQL's full text search service? If so, has anyone implemented it and had good / bad experiences? Oracle Text is the equivalent functionality. I've had good experiences with it. Assuming that you are maintaining the text index asynchronously, that tends to be the first source of problems, since it may be a bit between a change being made and the index getting updated, but that's normally quite reasonable during normal operation. In addition to what Justin said, you can find more information about Oracle Text here . And further to what Justin said, it is

Does Oracle support full text search?

别等时光非礼了梦想. 提交于 2019-11-26 12:44:33
问题 Is there an Oracle equivalent to MS SQL\'s full text search service? If so, has anyone implemented it and had good / bad experiences? 回答1: Oracle Text is the equivalent functionality. I've had good experiences with it. Assuming that you are maintaining the text index asynchronously, that tends to be the first source of problems, since it may be a bit between a change being made and the index getting updated, but that's normally quite reasonable during normal operation. 回答2: In addition to