create a comma-separated string from multiple rows
If you think of it, it's basically reverse engineer the process of "splitting a string into multiple rows".
I have a long list of values that are already split into different rows from the original data source, but now I want to put them back in a single string, separated by the commas.
How do I do that? my data is relatively large.
sample of original data source:
customers_id | carrier_requested |
342062 | UPS WSV |
342062 | UPS GD |
342062 | UPS 3D |
194343 | UPS ST |
194343 | UPS SP1 |
194343 | UPS WXP |
sample of ideal output:
customers_id | carrier_requested |
342062 | UPS WSV, UPS GD, UPS 3D |
194343 | UPS ST, UPS SP1, UPS WXP |
0
Comments
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So you'll need to use a SQL transform for your dataset.
It would go something like this:
SELECT `customers_id`, GROUP_CONCAT(`carrier_requested` SEPARATOR ', ') as 'carrier_requested'
FROM data_source
GROUP BY `customers_id`The MySQL GROUP_CONCAT function looks like what you'd want to use.
Hope this helps,
ValiantSpur
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