How can i show values from different columns in new rows? Lets say i have:
| o_id | type | color |
|---|---|---|
| 1 | product | red |
| 2 | object | green |
And i want my result to look like this:
| o_id | Attribute |
|---|---|
| 1 | product |
| 1 | red |
| 2 | object |
| 2 | green |
CodePudding user response：
One simple approach uses a union:
SELECT o_id, type AS Attribute, 1 AS pos FROM yourTable
UNION ALL
SELECT o_id, color, 2 FROM yourTable
ORDER BY o_id, pos;