From: Mike Rylander <mrylander@gmail.com>
Date: Thu, 6 Jul 2017 21:09:02 +0000 (-0400)
Subject: serials: Allow cascading delete of issuances from scap
X-Git-Url: https://old-git.evergreen-ils.org/?a=commitdiff_plain;h=e4bc9e8972ecfb9d7040e894a2deb3410ffdf70c;p=working%2FEvergreen.git

serials: Allow cascading delete of issuances from scap

Signed-off-by: Mike Rylander <mrylander@gmail.com>
---

diff --git a/Open-ILS/src/sql/Pg/upgrade/ZZZZ.schema.issuance_scap_fkey.sql b/Open-ILS/src/sql/Pg/upgrade/ZZZZ.schema.issuance_scap_fkey.sql
new file mode 100644
index 0000000000..d27f8bc974
--- /dev/null
+++ b/Open-ILS/src/sql/Pg/upgrade/ZZZZ.schema.issuance_scap_fkey.sql
@@ -0,0 +1,18 @@
+BEGIN;
+
+ALTER TABLE serial.issuance DROP CONSTRAINT IF EXISTS issuance_caption_and_pattern_fkey;
+
+-- Using NOT VALID and VALIDATE CONSTRAINT limits the impact to concurrent work.
+-- For details, see: https://www.postgresql.org/docs/current/static/sql-altertable.html
+
+ALTER TABLE serial.issuance ADD CONSTRAINT issuance_caption_and_pattern_fkey
+    FOREIGN KEY (caption_and_pattern)
+    REFERENCES serial.caption_and_pattern (id)
+    ON DELETE CASCADE
+    DEFERRABLE INITIALLY DEFERRED
+    NOT VALID;
+
+ALTER TABLE serial.issuance VALIDATE CONSTRAINT issuance_caption_and_pattern_fkey;
+
+COMMIT;
+