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fix: alembic migration error msg trying to delete constraint on tables #11115

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Oct 1, 2020
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Original file line number Diff line number Diff line change
Expand Up @@ -27,15 +27,15 @@
down_revision = "3fbbc6e8d654"

from alembic import op
from sqlalchemy.dialects.mysql.base import MySQLDialect


def upgrade():
try:
bind = op.get_bind()
if isinstance(bind.dialect, MySQLDialect):
# index only exists in mysql db
with op.get_context().autocommit_block():
op.drop_constraint("table_name", "tables", type_="unique")
except Exception as ex:
print(ex)


def downgrade():
Expand Down