vertica software

Label: Delete primary KEY (the primary key value of the Vertica database is not unique):SELECT analyze_constraints (' Fb_s.c_log '); Locate the key name, and then: ALTER TABLE fb_s.c_log DROP CONSTRAINT c_primary; SELECT analyze_constraints (' Fb_s.user_info '); ALTER TABLE fb_s.user_info DROP CONSTRAINT c_primary; Build Users and schemas: CREATE user fb_s_sql identified by ' password ';CREATE SCHEMA Fb_s_sql; Give permission:GRANT all on the SCHEMA f

Tags: group_concat mysql vertica expansion packToday, when customers are using Vertica, they want to use the Group_concat () function of MySQL.The Group_concat function returns a string result that is composed of concatenated values in the grouping. Since this function is not in the Vertica. So you need to develop it yourself. Fortunately, someone has already wri

This article address: http://blog.csdn.net/kongxx/article/details/7176961 A recent stress test on Vertica found that the following exception occurred when the number of concurrent requests reached 50 + Com.vertica.util.PSQLException:FATAL:New session rejected due to limit, already-sessions active at Com.vertica.core. V3. Connectionfactoryimpl.readstartupmessages (Unknown Source) at Com.vertica.core.v3.ConnectionFactoryImpl.openConnectionImpl (Unknown

Recently upgraded Vertica to 6.1.3, found that the error code is not complete in the 6.1.x document, or perhaps no update, the following is a complete JDBC error code list below: Com/vertica/dsi/core/impl/jdbcmessages.properties # Format is Key = (nativeerrorcode) message. In all translations of this file, # the (Nativeerrorcode) _must_ is unmodified and _must_ be included. Batch_not_empty = (10000) BATCH

Use Vertica to construct a calendar:SELECT to_number (TO_CHAR (ts: DATE, 'yyyymmdd') as day_id,Year (ts: DATE) as year_of_calendar,Month (ts: DATE) as month_of_year,Dayofweek (ts: DATE) as day_of_weekFROM (SELECT '01-01-2013 ': TIMESTAMP as tmUNIONSELECT '12-31-2500 ': TIMESTAMP as tm) As tTIMESERIES ts as '1 Day' OVER (order by tm );Create a calendar in Oracle:Select to_date ('123', 'yyyymmdd') + (level-1) as day_id,EXTRACT (year from (to_date ('2014

Delete primary key (the primary key value for the Vertica database is not unique): SELECT analyze_constraints (' Fb_s.c_log '); Locate the key name, and then: ALTER TABLE fb_s.c_log DROP CONSTRAINT c_primary SELECT analyze_constraints (' Fb_s.user_info '); ALTER TABLE fb_s.user_info DROP CONSTRAINT c_primary; Build users and schemas: CREATE user fb_s_sql identified by ' password '; CREATE SCHEMA Fb_s_sql; gives permission: GRANT all o

Requirements: Build a table on the Vertica database, the table structure originates from the original Oracle database, so it needs to be converted into Vertica database table structure. The actual conversion operation needs to evaluate all the data types used by the source library and the characteristics of the data itself. The following is a summary of the replacement rules under a scenario, for informatio

Tags: dba run too cut OCA tle source load optimizedThe DBD = Database Designer is the primary native tool in the optimization of Vertica databases. First run the AdminTools tool and follow the steps below: 1. Select "6 Configuration Menu"2. Select "2 Run Database Designer"3. "Select a database for design"Select the database you want to analyze4. "Enter directory for Database Designer output:"Enter the output directory of the DBD5. "Designer Name:"Ente

"Data Recovery failure description"Company financial personnel for data maintenance, misoperation, in the financial software to initialize the data, because recently did not do backup, it caused a lot of financial documents lost.Because the financial data is very important, the customer is anxious to get back.The data Recovery Analysis "Engineer detection, in SQL Server database Enterprise Manager, discover what the

Software Engineering-software testing, Software Engineering Software Testing After the system is complete, it is time to test the system. This must have been the first system of acceptance. We are confident that the system will be accepted by the master. Once it comes to the master, nothing will happen, in addition, so

Software can be roughly divided into: Free Software and non-free software Types of Free Software and non-free software.The following are some terms that are frequently mentioned when discussing free software. They explain which types overlap with others or are part of o

In the past, I have read many articles about the top ten essential tools for developing common professional software such as. NET and. Net programmers. Today, I don't want to introduce these professional software. I want to introduce some auxiliary software that is often used during development to help us complete better development. I recommend commonly used a

period, the CS is not, other industries worse. When the economy improves, CS lead. There's a representative billionaire who says, "Software will swallow the world." human beings just develop software, let the software command the machine, all other working bots will help you. You are the mouth cannon, these rich people use their own huge amount of money

It takes more than two years to develop programs! Make a small summary! Status Quo, At present, many software companies in China are still working in small workshops! After receiving a project, let's discuss how to do it. After the boss decides to make a decision, let's split our heads! As a result, a project started, and everyone was busy in the early stage! Everyone has their own jobs (some companies are unevenly allocated. If there are idle people,

The table structure is as follows: CREATETABLEIFNOTEXISTSpublic. user (idPRIMARYKEY, namevarchar (32) NOTNULLUNIQUE ,......); modify statement altertablepublic. useralternamesetdatatypevarchar (52); due to the constraints of the "UNIQUE" condition,

Three words: strong, big, comprehensive, and strongly recommended SQL statement Query Result select (timestamp '2005-01-17 10:00' - timestamp '2005-01-01'); 16 10:10 select (timestamp '2005-01-17 10:00' -

1. Query the database for waitingSELECT * from Resource_queues where node_name= (select Node_name from Nodes order by Node_name limit 1) Order by queue_entr Y_timestamp desc;2. Check the current database execution SQL (included in the queue waiting)3

Tags: is system dependent upgrade ref Adobe Inux Director dir Most of our Linux system is a Linux manufacturer's system, so these vendors can compile some software to provide users to download, the user after downloading can be installed directly, thus eliminating the compilation of the source code and the process of various problems. At this point we can use the appropriate software manager to ope

RHEL 6.2 CPU 24 memory 128G 8 Node 1. Keep more Event Logs for dc_tuple_mover_events. select SET_DATA_COLLECTOR_POLICY(‘TupleMoverEvents‘, ‘1000‘, ‘100000‘); Default: 1000kb kept in memory, then kb kept on disk. 2. Keep more Event Logs for

# Example: migrate Weibo user data. Because the structure of the source table weiboFriend is not exactly the same as that of the target table weiboUser, the statement must not only strictly arrange the field order, but also use the default (for