mysql GROUP_CONCAT标签来自一列，结果来自另一列

Question

I have a table that lists urls to product photos. In the table the photos are listed multiple times (once for the various resizes that have been done during the upload). The table has three columns of interest:

photoFlag photoName objectID

Using GROUP_CONCAT i can get all the photo urls for each product but then i lose the photoFlag tag. the results come as

other_columns photoName1,photoName2,photoName3,etc

I would like them to come like:

other_columns photoFlag1*photoName1,photoFlag2*photoName2,photoFlag3*photoName3,etc

So that when processing the result set I can easily pick the best photo options from the list.

Is this even possible?

Answer 1

SELECT other_columns, GROUP_CONCAT(CONCAT_WS('*', photoFlag, photoName))
    FROM YourTable
    GROUP BY SomeColumn;