Make database changes to help with deleting entries in the nars table

sqitch/deploy/cascade_nar_foreign_keys.sql

@@ -0,0 +1,35 @@
+-- Deploy guix-data-service:cascade_nar_foreign_keys to pg
+
+BEGIN;
+
+ALTER TABLE narinfo_fetch_records
+  DROP CONSTRAINT narinfo_fetch_records_narinfo_signature_data_id_fkey,
+  ADD CONSTRAINT narinfo_fetch_records_narinfo_signature_data_id_fkey
+  FOREIGN KEY (narinfo_signature_data_id) REFERENCES narinfo_signature_data(id)
+  ON DELETE CASCADE;
+
+ALTER TABLE narinfo_signatures
+  DROP CONSTRAINT narinfo_signatures_nar_id_fkey,
+  ADD CONSTRAINT narinfo_signatures_nar_id_fkey
+  FOREIGN KEY (nar_id) REFERENCES nars(id)
+  ON DELETE CASCADE;
+
+ALTER TABLE narinfo_signatures
+  DROP CONSTRAINT narinfo_signatures_narinfo_signature_data_id_fkey,
+  ADD CONSTRAINT narinfo_signatures_narinfo_signature_data_id_fkey
+  FOREIGN KEY (narinfo_signature_data_id) REFERENCES narinfo_signature_data(id)
+  ON DELETE CASCADE;
+
+ALTER TABLE nar_references
+  DROP CONSTRAINT "nar_references_nar_id_fkey",
+  ADD CONSTRAINT "nar_references_nar_id_fkey"
+  FOREIGN KEY (nar_id) REFERENCES nars(id)
+  ON DELETE CASCADE;
+
+ALTER TABLE nar_urls
+  DROP CONSTRAINT "nar_urls_nar_id_fkey",
+  ADD CONSTRAINT "nar_urls_nar_id_fkey"
+  FOREIGN KEY (nar_id) REFERENCES nars(id)
+  ON DELETE CASCADE;
+
+COMMIT;

sqitch/deploy/nar_indexes.sql

@@ -0,0 +1,9 @@
+-- Deploy guix-data-service:nar_indexes to pg
+
+BEGIN;
+
+CREATE INDEX narinfo_signatures_narinfo_signature_data_id ON narinfo_signatures (narinfo_signature_data_id);;;;
+
+CREATE INDEX nar_references_nar_id ON nar_references (nar_id);
+
+COMMIT;

sqitch/revert/cascade_nar_foreign_keys.sql

@@ -0,0 +1,7 @@
+-- Revert guix-data-service:cascade_nar_foreign_keys from pg
+
+BEGIN;
+
+-- XXX Add DDLs here.
+
+COMMIT;

sqitch/revert/nar_indexes.sql

@@ -0,0 +1,7 @@
+-- Revert guix-data-service:nar_indexes from pg
+
+BEGIN;
+
+-- XXX Add DDLs here.
+
+COMMIT;

sqitch/sqitch.plan

@@ -94,3 +94,5 @@ package_derivations_extended_statistics 2022-11-12T10:40:18Z Chris <chris@felis>
 derivation_outputs_id_and_derivation_id_idx 2022-11-12T10:41:42Z Chris <chris@felis> # Add index on derivation_outputs id and derivation_id
 blocked_builds_blocked_builds_blocked_derivation_output_details_set_id_2 2023-03-05T10:19:53Z Chris <chris@felis> # Add index on blocked_builds_blocked_derivation_output_details_set_id
 guix_revision_package_derivation_distribution_counts 2023-03-08T16:53:44Z Chris <chris@felis> # Add guix_revision_package_derivation_distribution_counts table
+cascade_nar_foreign_keys 2023-08-01T09:42:33Z Chris <chris@felis> # Make it easier to delete nars entries
+nar_indexes 2023-08-01T11:37:35Z Chris <chris@felis> # Add nar related indexes

sqitch/verify/cascade_nar_foreign_keys.sql

@@ -0,0 +1,7 @@
+-- Verify guix-data-service:cascade_nar_foreign_keys on pg
+
+BEGIN;
+
+-- XXX Add verifications here.
+
+ROLLBACK;

sqitch/verify/nar_indexes.sql

@@ -0,0 +1,7 @@
+-- Verify guix-data-service:nar_indexes on pg
+
+BEGIN;
+
+-- XXX Add verifications here.
+
+ROLLBACK;