Add group table

migrations/dimensions-config/1fae088c80b6.py

@@ -0,0 +1,44 @@
+"""Migration script for dimensions.yaml namespace=daf_butler version=6.
+
+Revision ID: 1fae088c80b6
+Revises: 2a8a32e1bec3
+Create Date: 2024-03-12 14:35:38.888572
+
+"""
+
+import logging
+
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = "1fae088c80b6"
+down_revision = "2a8a32e1bec3"
+branch_labels = None
+depends_on = None
+
+# Logger name should start with lsst to work with butler logging option.
+_LOG = logging.getLogger(f"lsst.{__name__}")
+
+
+def upgrade() -> None:
+    """Perform schema upgrade."""
+    _create_group_table()
+
+
+def downgrade() -> None:
+    """Perform schema downgrade."""
+    raise NotImplementedError()
+
+
+def _create_group_table() -> None:
+    op.create_table(
+        "group",
+        sa.Column("instrument", sa.String(32), primary_key=True),
+        sa.Column("name", sa.String(64), primary_key=True),
+        sa.schema.ForeignKeyConstraint(
+            columns=["instrument"],
+            refcolumns=["instrument.name"],
+            name="fkey_group_instrument_name_instrument",
+        ),
+    )