[GitHub] [superset] john-bodley commented on a change in pull request #15807: fix: migration script can't drop constraint

[GitBox <gi...@apache.org>]

john-bodley commented on a change in pull request #15807:
URL: https://github.com/apache/superset/pull/15807#discussion_r674172137



##########
File path: superset/migrations/versions/49b5a32daba5_add_report_schedules.py
##########
@@ -119,13 +120,17 @@ def upgrade():
     )
 
 
+def has_unique_constraint(constraint_name: str, table_name: str) -> bool:
+    bind = op.get_bind()
+    inspector = Inspector.from_engine(bind)
+    unique_constraints = inspector.get_unique_constraints(table_name)
+    return constraint_name in {constraint["name"] for constraint in unique_constraints}

Review comment:
       @betodealmeida it seems like we have similar logic like this [elsewhere](https://github.com/apache/superset/blob/62a8f2e193da3bdf1f43be085b5814be3dd476fa/superset/utils/core.py#L675-L684).




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