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Modify DELETE triggers to delete BEFORE instead of AFTER to prevent possible foreign key constraint violations

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Signed-off-by: DL6ER <dl6er@dl6er.de>
This commit is contained in:
DL6ER 2023-12-28 11:12:20 +01:00
parent 1b87ec067e
commit d2828310f2
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GPG key ID: 00135ACBD90B28DD
2 changed files with 34 additions and 0 deletions
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7
advanced/Scripts/database_migration/gravity-db.sh
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@ -152,4 +152,11 @@ upgrade_gravityDB(){
pihole-FTL sqlite3 -ni "${database}" < "${scriptPath}/17_to_18.sql"
version=18
fi
if [[ "$version" == "18" ]]; then
# Modify DELETE triggers to delete BEFORE instead of AFTER to prevent
# foreign key constraint violations
echo -e " ${INFO} Upgrading gravity database from version 18 to 19"
pihole-FTL sqlite3 -ni "${database}" < "${scriptPath}/18_to_19.sql"
version=19
fi
}

27
advanced/Scripts/database_migration/gravity/18_to_19.sql Normal file
View file

@ -0,0 +1,27 @@
.timeout 30000
PRAGMA FOREIGN_KEYS=OFF;
BEGIN TRANSACTION;
DROP TRIGGER tr_domainlist_delete;
CREATE TRIGGER tr_domainlist_delete BEFORE DELETE ON domainlist
BEGIN
DELETE FROM domainlist_by_group WHERE domainlist_id = OLD.id;
END;
DROP TRIGGER tr_adlist_delete;
CREATE TRIGGER tr_adlist_delete BEFORE DELETE ON adlist
BEGIN
DELETE FROM adlist_by_group WHERE adlist_id = OLD.id;
END;
DROP TRIGGER tr_client_delete;
CREATE TRIGGER tr_client_delete BEFORE DELETE ON client
BEGIN
DELETE FROM client_by_group WHERE client_id = OLD.id;
END;
UPDATE info SET value = 19 WHERE property = 'version';
COMMIT;