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Vertica database operations, vertica Database

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

The Data modeling tool family enables Oracle Data Modeler to support Vertica

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

When installing the R-lang package in the vertica environment, the following error occurs: libgfortran. so.1 missing.

-libgfortran-41 x86_64 4.1.2-39. el6 ISO 126 ktransaction s Ummary = ========================================================== ========================================================== ========================================== install 1 package (s) total download size: 126 kinstalled size: 820 kis this OK [Y/n]: ydownloading packages: Running rpm_check_debugrunning transaction testtransaction test succeededrunning transaction installing: compat-lib

Configure the php environment for accessing the columnar database vertica

and query, but the business edition of infobright supports. Vertica does not have this problem. Of course, vertica is also commercial and requires money to buy it. On their official website, you can apply for a 30-day license trial. Php accesses vertica. Unlike accessing infobright, infobright is compatible with the mysql protocol and can be used directly with i

Vertica: DBMS schema-based Columnstore Data Warehouse

Tags: des http io ar os using Java SP forIntroducedVertica (HP) is a DBMS-based database system suitable for read-intensive analytical database applications, such as data warehouses, and the full name of the white paper is called Verticaanalytic database. As can be seen from the name, Vertica represents its data storage is a column, analytic is suitable for analytical needs, DB represents itself a database, support SQL.AdvantageCompared to traditional

Vertica: DBMS schema-based Columnstore Data Warehouse

IntroducedVertica (HP) is a DBMS-based database system suitable for read-intensive analytical database applications such as data warehouses, and the full name of the white paper is called Verticaanalytic database. As can be seen from the name, Vertica represents its data storage is a column, analytic is suitable for analytical needs, DB represents itself a database, support SQL.AdvantageCompared to traditional relational database systems and other col

about how to use MySQL's Group_concat () function on Vertica

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

Vertica Sample Database Installation

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

Vertica "error: Too Many Ros containers exist"

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

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: [

Vertica: DBMS schema-based Columnstore Data Warehouse

Tags: des java uses OS io strong data forIntroducedVertica (HP) is a DBMS-based database system suitable for read-intensive analytical database applications such as data warehouses, and the full name of the white paper is called Verticaanalytic database. As can be seen from the name, Vertica represents its data storage is a column, analytic is suitable for analytical needs, DB represents itself a database, support SQL.AdvantageCompared to traditional

Vertica Performance Analysis

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

Reproduced Vertica "Error:too Many ROS containers exist"

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,

Optimization design of Vertica DBD analysis

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

Vertica session interruption

When using Vertica, you often encounter the need to forcibly end or interrupt a time-consuming query. In this case, you can use the INTERRUPT_STATEMENT () provided by Vertica () INTERRUPT_STATEMENT requires two parameters. The first parameter is session_id, and the second parameter is statement_id. When using Vertica, you often encounter the need to forcibly end

Vertica convert local time to GMT time

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

Vertica Database SQL operation memo

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

Vertica modifies the maximum number of concurrent connections

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

Import and export of database Vertica script mode

Label:Need to enter under Vsql: Import: Copy emp from '/tmp/emp.csv ' DELIMITER ', ' ESCAPE as ' \ ' enclosed by ' "' DIRECT EXCEPTIONS '/log file path/log filename. log 'Directly on the server command line where the Vertica is located:vsql-d db Instance-u user name-w password-c "copy corresponding database table from ' file name ' DELIMITER ', '" DIRECT EXCEPTIONS '/log file path/log filename. log '; Such as: vsql-d ncell-u dbadmin-w 1-c "copy emp fr

Vertica "Error:too Many ROS containers exist"

Original link: Vertica "error:too many ROS containers exist" Recently in the Vertica with a problem, vertica after running for some time, always appear similar to the following error Java.sql.SQLException: [Vertica][vjdbc] (5065) error:too Many ROS containers exist for the following projections: ;p rojection> (limit

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