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jinxing • Application • 95 View • 2024-08-20 07:23:32
SQL, mark continuous rows with sequence numbers
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jinxing • Application • 88 View • 2024-08-19 09:39:02
SQL, compute cumulative sums according to the termination condition
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jinxing • Application • 69 View • 2024-08-16 07:26:09
SQL, concatenate multiple rows of strings and remove duplicates
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jinxing • Application • 112 View • 2024-08-15 07:54:28
SQL, output associated records having many-to-many relationship row by row
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jinxing • Application • 112 View • 2024-08-07 10:08:07
SQL, split values of two columns respectively and count members of their intersection
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jinxing • Application • 213 View • 2024-08-05 09:30:22
Get duplicate records from a csv file and sort them
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jinxing • Application • 96 View • 2024-08-02 06:02:51
Retrieve multiple columns from a csv file to generate a new file
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jinxing • Application • 104 View • 2024-08-01 07:37:08
Clear duplicate lines and lines having missing values from a csv file
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jinxing • Application • 111 View • 2024-07-31 10:28:00
Merge multiple files, remove duplicates and sort the result
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jinxing • Application • 105 View • 2024-07-26 00:32:05
Retrieve a specified column from a csv file and concatenate its values as a string
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jinxing • Application • 81 View • 2024-07-24 11:32:39
Find the row containing the maximum value from a text file
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jinxing • Application • 110 View • 2024-07-22 01:51:40
Read the first 100 lines from a huge csv file on S3
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jinxing • Application • 73 View • 2024-07-16 01:52:58
SQL, split up a field according to whether the specified characters are unique or not
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