malware synonym

I have been learning Lucene3.5 recently, and I feel that the knowledge inside is really great. Today we will share with you our own to implement a synonym for the word breaker. A word breaker consists of a number of tokenizer and tokenfilter, this article explains that we use these two features to implement their own a simple synonym word breaker, please point out the wrong place. First, design ideas What d

appear in a WHERE clauseData queried is greater than 2% to 4%Table updated frequentlyNote: The index does not need to be used, just that we are using the name to query the time, the speed will be faster. Of course, the speed of the check is fast, the insertion speed will be slow. Because you are inserting data, you need to maintain an index.5. Querying the IndexYou can use the data dictionary view user_indexes and user_ind_columns to view the information for the indexSELECT Ic.index_name, Ic.co

Today we implement a simple word breaker, just do the demo using the following functions:1, the participle according to the space, the horizontal bar, the point number to divide;2, the implementation of HI and hello synonym query function;3, to achieve hi and hello synonym highlighting;Myanalyzer Implementation code:public class Myanalyzer extends Analyzer {private int analyzertype;public myanalyzer (int ty

after receiving instructions from the user today, you need to create a table in the database. After the script is written, the user is successfully executed, but the user is found to be using the error user1, user2 should be used. Delete the original table, log on to user2 again, and execute the script. Everything is OK. the user user1 cannot access the result. Suddenly, the user is not authorized, and the PL/SQL authorization fails, only scripts can be used for execution executio

Using expdp to export data today, we found an error reporting ORA-01775, as shown below: This is an error reported when exporting data on the server. Then, I tried it on my local machine and found that the data can be exported successfully. I searched the internet becauseCause of the synonym sys_export_schema_01: expdp automatically generates the table during the export process. If the operation is interrupted in the middle, the table will exist,

Tags: 02055 02049 02063Symptom: 02055 02049 02063 06512 error reported in Target library during stored procedureTroubleshooting process:1. Querying the 110 rows of the stored procedure is just a simple delete action2, through the following SQL statement to find the deadlock, no deadlockSELECT ' alter system kill session ' | | Chr (39) | | l.session_id| | ', ' | | s.serial#| | Chr (39) | | immediate; ', l.session_id sid,s.serial#,l.locked_mode,l.oracle_username,l.os_user_name,S.machine,s.terminal

index on the corresponding column after the PRIMARY KEY or UNIQUE constraint is defined Create manually : Users can create non-unique indexes on other columns to speed up the query To create an index on one or more columns CREATE INDEX Index on Table (column[, Column]...); To create an index on the column last_name of table employees CREATE INDEX on employees (last_name); Index created.②, query IndexYou can use the data dictionary view user_indexes and user_ind_columns to view the

greater than 2% to 4%Table updated frequentlyIt is important to note that the creation of an index is also a certain amount of resources, 21 when using the index will speed up the query, the corresponding insertion speed is slow, because also to maintain the indexQuery Index: Use the data dictionary view user_indexs,user_ind_columns to view index informationSELECT Ic.index_name, Ic.column_name,Ic.column_position col_pos,ix.uniquenessFrom User_indexes IX, User_ind_columns ICWHERE Ic.index_name =

smallColumns are not often used as join conditions or are present in the WHERE clauseData queried is greater than 2% to 4%Tables are often updatedNote: The index does not need to be used, just to say that we are querying with name. Speed will be faster. Of course, the speed of the check is fast, the insertion speed will be slow.Because the same time you insert data, you need to maintain an index.5. Querying the IndexAbility to view index information using the data dictionary view user_indexes a

Synonyms in Oracle:Summary: In simple words, the tables of different users in Oracle are generally only available to their own users, and if you do not want to authorize other users to use them in an authorized way, then create the table with the table name in front ofSynonyms, which represents synonyms. In this way, a user-created table B can be used directly instead of a to grant B access to the table.Transferred from: Http://zhidao.baidu.com/link?url=BiYEkVVBEGI9Br7Ltph1lr81f8TQEJgA_q-Omz_wlX

Title Requirements:First, synonyms maintain a given interface, set two words to each other synonyms. Synonyms have mutual transitive, if A and B are synonyms, B and C are synonyms, then A, B, C are synonyms. requires an interface to query a given two but whether it is a synonym relationship. and can provide the interface to clear all the synonyms relationship. Interface Description/** * Set 2 words for synonyms * @param word1 word one * @param word2 w

Previous article Lucene participle process explained some of the process of participle, we also have a preliminary understanding of the word segmentation process, know that a word breaker consists of multiple tokenizer and Tokenfilter, This article explains that we use these two features to implement their own a simple synonym word breaker, the wrong place please point out(i) AnalysisHow to implement synonyms? For example, Chongqing can be called Moun

Today, I encountered a problem, which is easy to say, but it bothered me for half a day. After upgrading the database, a function can not run, in the background to observe its SQL, found that SQL contains a package can not be executed, error ora-00904 invalid identifier Wmsys. dbms_lob.xxx is the package. Select * from dba_source; you can find that dbms_lob belongs to sys. Change wmsys. dbms_lob.xxx in SQL to sys. dbms_lob.xxx or dbms_lob.xxx. However, developers do not want to modify the s

CAST function shocould support INT synonym for SIGNED. I. e. CAST (y AS INT), synonymi. e Login/Register Developer Zone Bugs Home Report a bug Statistics Advanced search Saved searches Tags Bug #73054. CAST function shocould support INT synonym for SIGNED. I. e. CAST (y AS INT) Submitted: 19 Jun 2014 Modified: 30 Jun 2014 Reporter: Morgan Tocker Email

Today we implement a simple word breaker, just do the demo using the following functions: 1, the participle according to the space, the horizontal bar, the point number to divide; 2, the implementation of HI and hello synonym query function; 3, to achieve hi and hello synonym highlighting; Myanalyzer Implementation code: public class Myanalyzer extends Analyzer { private int analyzertype; public myanal

INDEX Emp01_id_ixon EMP01 (employee_id)To delete an index:Drop INDEX Emp01_id_ixWhen do I create an index? You can create an index in the following situations:A wide range of data values are distributed in columnsColumns often appear in a WHERE clause or join conditionTables are often accessed and data volumes are large, and the data accessed is roughly 2% to 4% of the total dataWhen do I not create an index? Do not create an index in the following situations:The table is small.Columns are not

Tags: from use drop user sel art creat seq Test--Create synonymsCreate synonym t_system_userdepartment for Xtzl. T_system_userdepartment;--Query synonymsSELECT * from SYS. all_synonyms WHERE synonym_name= ' t_system_post ';--Query the synonyms under the current userSELECT * from user_synonyms;--Authorization inquiryGrant SELECT on Tabel1 to SECMGT-REVOKE permission;Revoke insert on t_system_userdepartment from SECMGT;--Query the serial number under th

' you' is also 1, ' You ' and ' thank ' is also 1 * @see but suppose ' are ' is a stop word (stopfilter effect), then the position increment between ' how ' and ' You ' becomes 2 * @see When we look for an element, Lucene first takes the element by its position increment, but what happens if the two-word position increment is the same? * @see Suppose there is also a word ' this ', its position increment and ' how ' are the same, Then when we search for ' this ' in the interface * @see will also

, r_constraint_namefromuser_constraintswheretable_name=upper (' table_name '); Sql>selectc.constraint_name,c.constraint_type,cc.column_namefromuser_constraintsc, User_cons_columnsccwherec.owner=upper (' table_owner ') andc.table_name=upper (' table_name ') andc.owner=cc.owner andc.constraint_name=cc.constraint_name orderbycc.position; 　　8. Storage functions and proceduresView the status of functions and proceduresSql>select object_name,status from user_objects where object_type= ' FUNCTION '

in the index are deleted, and the data space occupied by the index is freed, but the data in the table still exists.Common index-related data dictionary views are: User_indexes: The definition of the user's Index object, containing the index's name and some related attributes of the index (such as uniqueness, etc.) User_ind_columns: The column definition information for the user Index object, which lists the index name, table name, and column name,