vertica sql

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

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

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

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

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

In the use of Vertica often encountered in the execution of a time-consuming query when you want to forcibly end or interrupt this operation, at this time can be provided by the Vertica interrupt_statement () function to solve such problems, interrupt_ Statement requires two parameters, the first parameter is session_id, and the second parameter is statement_id, both of which can be obtained from the sessio

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

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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

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

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. Resource Pools3.1 Querying the settings of the current resource poolSELECT name, memorysize, Maxmemorysize, priority, Runtimepriority,queuetimeout,runtimeprioritythreshold, Runtimecap, MaxConcurrency fro

# 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 example) fill in the SQL statement for fields not found in the source table: insertintopublic. weiboUser (id, screen_name, location, descriptio # Example: migrate Weibo user data. Because the structure of the

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,

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

Tags: flow blog blank results performance Taf mapred Tin HadoopMany of my friends asked if Hadoop was the right time to introduce our own projects and when to use SQL. When to use Hadoop, what are the tradeoffs between them? Aaron Cordova with a picture to answer your question, for different data scenarios, how to choose the right data storage processing tools to describe the specific description. Aaron Cordova is a big data analytics and architecture

To create a database:1 CREATE DATABASETest--The name of the database to be created2 on PRIMARY3 (4 --specific description of the database file5NAME='Test_data',--logical name of the master data file6FILENAME='E:\project\Test_data.mdf',--physical name of the master data file7SIZE=5MB,--Initial size of master data file8MAXSIZE=100MB,--maximum growth of the master data file9FileGrowth= the% --growth rate of master data filesTen ) One LOG on A ( - --the specific

Many friends ask whether the current full-time Hadoop is suitable for the introduction of our own projects, when to use SQL, when to use Hadoop, how to choose between them? Aaron Cordova to answer your question with a picture, for different data scenarios, how to choose the correct data storage processing tool is described in detail. Aaron Cordova is an expert on big data analytics and architecture in the United States, Koverse CTO and co-founder.The

Java. util. Date and Java. SQL. Date, java. SQL. Time, java. SQL. Timestamp interchange, java. SQL. timestamp 1. SQL time type to util time type Principle: java. SQL. date, java. SQL. t

Tags: implementation mechanism originally page organizes tables based on free article content index ClustFollowing the book on SQL tuning (SQL tuning or SQL optimization) in the essentials of high-performance SQL tuning and case resolution, we talk today about one of the most important core mechanisms of

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