Rows to Columns Rows to Comma Separated String
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 |
FROM: +-----+-----+ | uid | tag | +-----+-----+ | 1 | 1 | | 1 | 2 | | 1 | 3 | | 2 | 1 | | 2 | 4 | | 3 | 5 | +-----+-----+ TO: +-----+----------+ | uid | tag_list | +-----+----------+ | 1 | 1,2,3 | | 2 | 1,4 | | 3 | 5 | +-----+----------+ |
MySQL Use GROUP_CONCAT(). This function also works in Infobright. Incoming search terms:hive transposeimpala concatallowcfphive group by column and concat columnimpala group_concatjustvgxLink to this post!