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jinxing • Application • 2024-11-21 10:25:44
SQL: Recursive calculation of tree like hierarchical structure
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jinxing • Application • 24 View • 2024-11-19 09:16:20
SQL: Identify associated member groups without common points of association
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jinxing • Application • 34 View • 2024-11-15 09:32:31
SQL: Multi field mixed deduplication followed by numbering
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jinxing • Application • 312 View • 2024-09-05 03:04:04
SQL, in each group modify the null value of a specified column as its neighboring value
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jinxing • Application • 319 View • 2024-09-04 07:43:53
SQL, extract unique values of JSON format field from each group
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jinxing • Application • 200 View • 2024-09-03 08:26:51
Parse a csv file having a primary-sub tables structure
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jinxing • Application • 151 View • 2024-09-02 08:10:39
Process a large csv file with parallel processing
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jinxing • Application • 109 View • 2024-08-30 03:25:06
Split values of a field in a database table and transform it to new fields
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jinxing • Application • 117 View • 2024-08-28 06:34:41
Get the whole group where at least one member meets the specified condition
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jinxing • Application • 145 View • 2024-08-23 07:29:46
Java, perform COUNT on each group of a large csv file
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jinxing • Application • 92 View • 2024-08-21 07:00:30
Group and Summarize data, and align to the specified sequence
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jinxing • Application • 135 View • 2024-08-20 07:23:32
SQL, mark continuous rows with sequence numbers
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jinxing • Application • 120 View • 2024-08-19 09:39:02
SQL, compute cumulative sums according to the termination condition
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jinxing • Application • 87 View • 2024-08-16 07:26:09
SQL, concatenate multiple rows of strings and remove duplicates
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jinxing • Application • 128 View • 2024-08-15 07:54:28
SQL, output associated records having many-to-many relationship row by row
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