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jinxing • Application • 176 View • 2024-08-16 15:26:09
SQL, concatenate multiple rows of strings and remove duplicates
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jinxing • Application • 189 View • 2024-08-15 15:54:28
SQL, output associated records having many-to-many relationship row by row
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jinxing • Application • 243 View • 2024-08-07 18:08:07
SQL, split values of two columns respectively and count members of their intersection
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jinxing • Application • 313 View • 2024-08-05 17:30:22
Get duplicate records from a csv file and sort them
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jinxing • Application • 225 View • 2024-08-02 14:02:51
Retrieve multiple columns from a csv file to generate a new file
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jinxing • Application • 215 View • 2024-08-01 15:37:08
Clear duplicate lines and lines having missing values from a csv file
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jinxing • Application • 229 View • 2024-07-31 18:28:00
Merge multiple files, remove duplicates and sort the result
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jinxing • Application • 268 View • 2024-07-26 08:32:05
Retrieve a specified column from a csv file and concatenate its values as a string
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jinxing • Application • 155 View • 2024-07-24 19:32:39
Find the row containing the maximum value from a text file
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jinxing • Application • 258 View • 2024-07-22 09:51:40
Read the first 100 lines from a huge csv file on S3
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jinxing • Application • 133 View • 2024-07-16 09:52:58
SQL, split up a field according to whether the specified characters are unique or not
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