The "duplicates" tag concerns detecting and/or dealing with multiple instances of items in collections.
I've got big (>Mil rows) MySQL database messed up by duplicates. I think it could be from 1/4 to 1/2 of …
sql mysql duplicatesI have two files: Old and New. I need to remove any entry that Old contains from New. So I've …
excel filter duplicates formulaQuestion: in pandas when dropping duplicates you can specify which columns to keep. Is there an equivalent in Spark Dataframes? …
dataframe apache-spark pyspark apache-spark-sql duplicatesSo i'm making a macro to do a bunch of things. one thing is find duplicates of cells in sheet1 …
vba excel duplicates excel-2010I have a command (cmd1) that greps through a log file to filter out a set of numbers. The numbers …
bash command-line sorting count duplicatesI would like to check if my array has any duplicates and return the duplicated values in an array. I …
php arrays duplicatesI have duplicate rows in my table and I want to delete duplicates in the most efficient way since the …
sql database postgresql duplicates netezzaSo, my professor gave me tables to insert it in a database but when I execute his code, MySQL is …
mysql duplicates primary-key mysql-error-1062I have a vector with repeated elements, and would like to remove them so that each element appears only once. …
python r duplicatesI recently came across a question somewhere: Suppose you have an array of 1001 integers. The integers are in random order, …
arrays algorithm duplicates