duplicate-removal

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How to delete duplicate records in MySQL by retaining those fields with data in the duplicate item but not in the original item?

I hav开发者_运维技巧e few thousands of records with few 100 fields in a MySQL Table. Some records are duplicates and are marked as such. Now while I can simply delete the dupes, I want to retain any[详细]

2022-12-26 01:30 分类：问答
MySql - Select from - Don't Show Duplicate Words - maybe "on duplicate key"?

how can I insert \"on duplicate key\" in this Code to remove duplicate words? or is there a better method that you know? thank you!![详细]

2022-12-23 16:19 分类：问答
Add or delete repeated row

I have an output like this: idnamedate开发者_高级运维schoolschool1 1john11/11/2001nyu ucla 1john11/11/2001uclanyu[详细]

2022-12-22 03:03 分类：问答
How do I get Simian to produce a nice HTML report I can email to everyone on the team?

I am trying to discover how great our problem is with duplicate code, therefore I need to be able to mail a nice report (HTML, PDF, or word) to everyone on the team that lists all the duplicates that[详细]

2022-12-20 02:32 分类：问答
Single Query to delete and display duplicate records

One of the question asked in an interview was, One table has 100 records. 50 of them are duplicates. Is it possible with a single[详细]

2022-12-18 21:08 分类：问答
Problem removing duplicate files using awk

Contents of part3.1.awk { current_line=$0 if (current_line!=prev) { print $1 \" -> \" \" -> \" $5 \" -> \" $8[详细]

2022-12-16 12:23 分类：问答
List Duplicates on specific Class

I have a list List<T> instances where T has a date variable and a string ID. Now I need the list to remove duplicates on the string ID and only keep the latest dates. Anyone know how?[详细]

2022-12-13 22:57 分类：问答
how to remove duplicate value in NSMutableArray

i\'m scanning wifi info using NSMutableArray, but there are few duplicate values appear, so i try t开发者_运维知识库o use following code but still getting the duplicate values,[详细]

2022-12-13 05:25 分类：问答
Fast way to eyeball possible duplicate rows in a table?

Similar: How can I delete duplicate rows in a table I have a feeling this is impossible and I\'m going to have to do it the tedious way, but I\'ll see what you guys have to say.[详细]

2022-12-12 05:21 分类：问答
How to delete duplicate entries?

I have to add a unique constraint to an existing table. This is fine except that the table has millions of rows already, and many of the rows violate the unique constraint I need to add.[详细]

2022-12-11 20:39 分类：问答