vertica sql

Delete the primary key (the primary key value of the Vertica database is not unique): SELECTANALYZE_CONSTRAINTS (fb_s.c_log); find the key name, and then: keys; SELECTANALYZE_CONSTRAINTS (fb_s.user_info); altertablefb_s. Delete a primary key (the primary key value of the Vertica database is not unique): SELECT ANALYZE_CONSTRAINTS ('fb _ s. c_log '); find the key name, and then: alter table fb_s.c_log drop c

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' - timestamp '2005-01-01') / 7; 2 08:17:08.571429 select (timestamp '2005-01-17 10:00' - timestamp '2005-01-01') day; 16 select cast((timestamp '2005-01-17 10:00' - timestamp '2005-01-01')

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

Vertica database operations, vertica Database Delete a primary key (the primary key value of the Vertica database is not unique ):SELECT ANALYZE_CONSTRAINTS ('fb _ s. c_log ');Find 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;Create us

different copies are sorted differently, so this is useful for queries, which are also mentioned later in this section.Of course, Vertica compression, column-oriented storage, and table-torn storage are transparent to the user. Vertica provides a standard SQL interface to front-end users and is compatible with existing ETL,REPORTING,BI tools, making it easier fo

this is useful for queries, which are also mentioned later in this section.Of course, Vertica compression, column-oriented storage, and table-torn storage are transparent to the user. Vertica provides a standard SQL interface to front-end users and is compatible with existing ETL,REPORTING,BI tools, making it easier for other business systems to migrate to Verti

different copies are sorted differently, so this is useful for queries, which are also mentioned later in this section.Of course, Vertica compression, column-oriented storage, and table-torn storage are transparent to the user. Vertica provides a standard SQL interface to front-end users and is compatible with existing ETL,REPORTING,BI tools, making it easier fo

IntroductionThe evaluation of several modeling tools was highlighted in the previous blog, and SQL Power architect was selected as the final modeling tool, and the Oracle Data Modeler support Vertica was also studied during the evaluation process, although the eventual abandonment of Oracle data Modeler, but the scalability of Oracle Data Modeler is worth blogging.Software download locationSoftware official

The characteristics of Vertica can be summed up as follows: Column storage, MPP architecture, technology is relatively new. The columnstore itself facilitates the compression of data, and the MPP architecture makes it possible to scale horizontally to a larger scale (PB-level) with a relatively inexpensive PC-Class Server, which has been available for more than 05 years, enabling it to use newer technologies in recent years in the field of column data

In the use of the Vertica database, a scenario is encountered in which the program collects data from the cluster in the same area and writes the same table, and then we need to display the data in GMT time. At this point we can provide the time zone conversion function through Vertica to achieve this effect. First look at the Vertica default timezone Show TIMEZ

Tags: des style blog io color os ar for SPThe 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:"Enter the name

Address: http://blog.csdn.net/kongxx/article/details/7176961 During a recent stress test on vertica, we found that the following exception occurs when the number of concurrent requests reaches 50 +. Com. vertica. util. psqlexception: Fatal: new session rejected due to limit, already 55 sessions active This problem occurs because the maxclientsessions parameter is specified in

1. Introduction to the sample database:Vertica, like a traditional database, comes with a sample database--vmart sample database, which is a multi-schema database. This data is a database that may be used in large supermarkets (Vmart) to access products, customers, employees, and outlets and store information. When you use this example, you can create, run, optimize, and test a multi-schema database.Vmart contains the schema:Public (automatically created in all new

Original article: vertica "error: Too Many Ros containers exist" Recently I encountered a problem when using vertica. After running vertica for a while, it always encountered the following errors. java.sql.SQLException: [Vertica][VJDBC](5065) ERROR: Too many ROS containers exist for the following projections: If you

Vertica "ERROR: Too many ROS containers exist", verticacontainers Original article: Vertica "ERROR: Too many ROS containers exist" Recently I encountered a problem when using Vertica. After running Vertica for a while, it always encountered the following errors. java.sql.SQLException: [

Recently encountered a problem when using Vertica, Vertica after running for a period of time always appear similar to the following error For new files = 10)If you encounter a problem, you have to talk about the Vertica storage mechanism. Vertica writes newly written data to WoS (write optimization) by default,

Environment: RHEL 6.4 + vertica 7.0.0-11. finally confirm the installation of compat-libgfortran-41-4.1.2-39.el6.x86_64.rpm to solve. # rpm -ivh vertica-R-lang-7.0.0-0.x86_64.RHEL5.rpm error: Failed dependencies: /usr/lib64/libgfortran.so.1 is needed by vertica-R-lang-7.0.0-0.x86_64# rpm -ivh compat-libgfortran-41-4.1.2-39.el6.x86_64.rpm warning: compat-li

Article Title: configure the php environment for accessing the columnar database vertica. Linux is a technology channel of the IT lab in China. Including desktop applications, Linux system management, kernel research, embedded systems, open source, and other basic classification vertica is a column-based database similar to Sybase IQ and infobright, and Sybase IQ is not used, this is a simple comparison tes

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