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tidb/executor
Yiding Cui 56713821ff plan: fix a problem caused by union's schema (#7680)
Before this commit. Union use the schema of its `Children[0]`.
The `Columns` information is correct.
But the `unique key information` is not, obviously.
2018-09-20 19:36:14 +08:00
..
2018-04-03 20:00:30 +08:00