The Duplication tag covers the topic of duplicated data and the strategies involved in removing the duplicates, often referred to as deduplication or simply dedupe.

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Msg 2627 Violation of PRIMARY KEY constraint

trying to make a database for teams in a tv show here. but when I try and insert data into tblShowteam the following error made its appearance. Msg 2627, Level 14, State 1, Line 2 Violation of ...
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(My)SQL: management and duplication of multiple sub-databases

I have a pretty simple question, but it seems that there are controversies as to how to solve it in the best possible way. Say I have a web app that makes online surveys. My challenge is that each of ...
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Duplicate GROUP_CONCAT values

Writing a plugin for Wordpress using a custom post type and an additional alias table to hold repetition of the post events. The problem comes with duplicate post meta values. wp_post_meta table: ...
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Finding duplicate data

I have noticed dup’s generated in my mail system. some service was causing duplicate calls to my insert proc and generated multiple duplicate messages with about a 4 mili-second difference in a date ...
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How to retrieve pkey value in mysql/python on duplicate key update

I'm currently using _mysql library in python. it uses pkey(int, auto increment) value that's created when inserting data using function conn.insert_id() This is how the query is made. INSERT INTO ...
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Synchronization between master and backup server

I am searching for an option to synchronize data between production server and backup server automatically. Does somebody know a method, how I can do this: if I delete, insert or update a record it ...
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Duplication Oracle Database to remote host

I have two scenarios. 1 ) Let's say , I have the same file system and same SID on both nodes. I've created any directories necessary for start the duplicate database. First I used command below. ...
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row locking or avoiding duplicate insertion on primarykey/otherfield combo

i have a table that stores additional data pertaining to files/images saved in files elsewhere, each entry can be associated with another type in the system, for users there may be one or more ...