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How to schedule tasks on Linux using crontab

Posted on 31st July 20197th May 2022 by RevisitClass

Cron in Linux Cron is a time-based job scheduler in Linux or Unix operation system. It is most suitable for

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Shell Script
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Merge or Upsert statement in Teradata with examples

Posted on 29th July 20197th May 2022 by RevisitClass

Merge Statement in Teradata Merge statement is also referred as Upsert that inserts a record to a table in a

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Teradata
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How to run program in background mode and run it after we logoff Linux system?

Posted on 25th July 20197th May 2022 by RevisitClass

Nohup command in Linux nohup command is used to execute long running programs in background mode. Even if we logoff

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Shell Script
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How to create the new database in Sqlite using Python

Posted on 20th July 201920th July 2019 by RevisitClass

SQLite in Python SQLite is a lightweight disk-based storage that doesn’t require separate server process in python.Some application can use

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Python
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How to export the table to a file using BTEQ script in Teradata

Posted on 17th July 201912th September 2020 by RevisitClass

EXPORT command in Teradata Export command is used to store the database information that returned by SQL Select statement in

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Teradata
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How to split the string based on pattern in Hive

Posted on 16th July 20197th May 2022 by RevisitClass

Split function in Hive Hive providing many string functions to manipulate the strings. Split is one of the string function

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Hadoop
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How to rename a table in Teradata?

Posted on 15th July 20197th May 2022 by RevisitClass

Teradata Rename Table We can rename the existing Teradata table using RENAME TABLE statement.We should have DROP privileges on the

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Teradata
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How to append Timestamp to file name in Shell script

Posted on 14th July 20197th May 2022 by RevisitClass

Create log file with current timestamp in Bash It is best practice to have log file in any shell script

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Shell Script
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How to start and stop the Apache tomcat server in command line

Posted on 14th July 20197th May 2022 by RevisitClass

Apache Tomcat Server Apache tomcat server is a open source web server that is developed by Apache software foundation. It

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Web Technology
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Conditional execution of SQL statements using activity count in Teradata BTEQ

Posted on 12th July 20197th May 2022 by RevisitClass

ACTIVITY_COUNT in Teradata Activity count is a variable that returns the number of rows affected by the SQL statement in

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Teradata
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