Postgres delete cascade not working. (. Cascade on delete will delete children records when the parent is deleted. Jan 17, 2017 · id INT PRIMARY KEY REFERENCES t1(id) ON DELETE CASCADE, data2 TEXT. findOneOrFail({ id }) await repo. First, create tables departments and employees to store departments and employees: add a foreign key with on delete cascade, and finally; commit the transaction; Repeat for each foreign key you want to change. id INT NOT NULL, FOREIGN KEY ([foreign_id]) REFERENCES [foreign_table] ([foreign_id]) ON DELETE CASCADE ); Here foreign_table is the name of the related table and the foreign_id is the linked column. This is to prevent infinite loops resulting from cascaded updates. findAll(); iter. Entity Framework will not take responsibility for cascading a delete in the database – it expects that you will achieve this by setting a cascading delete on the foreign key relationship in the RDBMS. CREATE TABLE "header". Cascade delete always works in one direction - from principal entity to dependent entity, i. para. PostgreSQL PostgreSQL Delete. The basic syntax of DELETE is as follows: CREATE TABLE [table] (. So when I run the command: CREATE DATABASE my-db; And I check the tables in the newly created database, I realized they still contained the same tables as the previously deleted database, even though I have not run any migration. id AND producers. author_id; After deleting the author with id 2 (Bjarne Stroustrup) due to the ON DELETE CASCADE in place it would delete the two quotes too as seen in the output below: Congrats! Sep 24, 2018 · IF condition THEN IF TG_OP = 'DELETE' AND operation_is_a_result_of_cascade_delete THEN RETURN OLD; ELSE -- my constraints go here END IF; END IF; I want to impose certain conditions, but only if the DELETE is not caused by the CASCADING keyword of a foreign key constraint. This means that when the author is deleted, the book is also deleted. 1 on cygwin and am having problem with an "on delete cascade". Having some cascade, some triggers, some through procedures doing the management. dump But I started noticing duplicate . Consider when I use TRUNCATE sch. If you feel the need to do this for a column which is not a foreign key, it means that Jan 6, 2013 · I quote the the manual for foreign key constraints: CASCADE specifies that when a referenced row is deleted, row (s) referencing it should be automatically deleted as well. CASCADE. 148112. With the following two entities: @Entity() export class Order { @PrimaryColumn() id: To delete a trigger from a table, you use the DROP TRIGGER statement with the following syntax: DROP TRIGGER [ IF EXISTS] trigger_name. I need to change this foreign key to ON DELETE CASCADE. Jul 23, 2015 · FROM fn_delete_btable(params) ) P. What if one day there's some non-Django app accessing and deleting records in my database but it doesn't handle ON DELETE CASCADE but assume the database would do the job. Just check following threads: PostgreSQL: NULL value in foreign key column. Still, I can't find this option when creating tables visually in pgAdmin. house. This means that you cannot use self-referential ON UPDATE CASCADE operations. CASCADE) But it works only on Postgres and Ms-SQl but not on MySql(Tried InnoDb as well). This will delete all data in products plus all dependent tables. 1 | 10. answered May 24, 2022 at 12:15. I am running postgresql 7. For example, the following did not soft delete the children: const parent = await repo. Then by all means use it. mytable CASCADE; It affect 3 related tables, which mean three sequences, Is there any solution to restart this sequence in one shot. softRemove(parent) Then by adding the relations it did: Aug 17, 2017 · 1. Having said this, if you delete a parent entity in Entity Framework, it will attempt to issue delete statements for any child entities which SQL 如何在Postgres中编写DELETE CASCADE 在本文中,我们将介绍如何在Postgres数据库中编写DELETE CASCADE语句。DELETE CASCADE是一种常用的约束条件,用于在一个表中删除一个记录时,自动删除相关联的外键记录。 I want it so that if a follower account is deleted, all follows for that account will be deleted, and if an account being followed is deleted, all follows for that account will be deleted as well. Why does it make sense that dropping a table which is referenced by other tables does not delete the tables that reference this one as well? Convienience? Jun 6, 2023 · To delete two aircrafts this solutions works fine: with del_seats as ( delete from seats where aircraft_code in ('319','320') returning aircraft_code ) delete from aircrafts as a where exists (select 1 from del_seats s where s. id, { onDelete: 'cascade' }). Jul 3, 2023 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. There are 5 options for foreign key constraint deletes: CASCADE: When a row is deleted from the parent table, all related rows in the child tables are deleted as well. renter, { foreignKey: 'house_id'}); } I also tried by omitting the hasMany association and only having the belongsTo part on renter when I delete a hosue: await house1. If you do not want to do that then you have to do something with the values in the column bound by the FK constraint because the db schema should not allow a record to have an orphaned value. forEach(brand -> this. And for one-to- many relationships the one side is always the principal and the many side is the dependent. Apr 4, 2022 · Use ON DELETE CASCADE in PostgreSQL. But I think that the Cascade Deletes. Asking for help, clarification, or responding to other answers. The Syntax. id = q. If the column allows for null values then execute an update before to set Jul 19, 2021 · If you want dependent rows to be deleted, you have to define the foreign key constraints with ON DELETE CASCADE. The simplest fixes would be to either drop the constraint or make it on delete cascade. You are correct to assume it is the database server and not Entity Framework Core that performs the cascade delete. name = 'foo'; What is essentially happening here is a join between films and producers, with all successfully joined films rows being marked for deletion. This syntax is not standard. Following are the Feb 22, 2017 · 4. FROM quote q INNER JOIN author a on a. name, a. And i can't seem to figure out why. author_id; After deleting the author with id 2 (Bjarne Stroustrup) due to the ON DELETE CASCADE in place it would delete the two quotes too as seen in the output below: Congrats! Dec 19, 2017 · It work only for one sequence, but my problem is to restart all the sequence of the truncated tables. Immediately after posting I discovered that if I include the relations in my original query then the cascade deletes will work. Mar 11, 2019 · cascade: true, }) public books: Book[]; } onDelete sets the authorId foreign key to CASCADE onDelete on Book. That seems to be what "Transaction_Results" was designed to do. Apr 14, 2023 · No. Aug 23, 2015 · 2. ON DELETE CASCADE specifies constraint option. user_id | group_id. ON DELETE CASCADE tells the DB to delete all child records when the parent is deleted. quote, a. Oct 27, 2016 · UPDATE: modified my brandService. Jul 13, 2014 · The ondelete='CASCADE' is the part that creates the ON DELETE CASCADE on the table. ALL, tried adding the Hibernate specific @Cascade annotation, tried rebuilding a new database, and I even created the minimal example below all of which fail. You can define cascading foreign keys that will delete all referencing rows if the "parent" is deleted. Can foreign key references contain NULL values in PostgreSQL? The cascade deletion should also work, because at the end the column is a valid reference. The on delete cascade is not generated in the schema generation query. – Sep 16, 2021 · Delete all rows in cp_owner that depend on the row you want to delete. I want to achieve that if a record in the parent table is deleted, then the corresponding records in the child table will automatically be deleted. Oct 27, 2017 · I have an existing foreign key that has ON DELETE NO ACTION defined. I used the standard DELETE FROM statement, using tag_id=1 The first statement is returning Success, so i expect that the rows are deleted. FOREIGN KEY (id_follower) REFERENCES users (id) ON DELETE CASCADE, CONSTRAINT following_fk. You do not need to dump and restore. Can't create the foreign key, no unique constraint or PK: Can't add a PK or unique constraint, has duplicates: user32234. deleting the principal entity deletes the dependent entities. public void deleteAll() {. S. id IN( SELECT Tag_id FROM Bdeletes) DELETE 1 SELECT * FROM tag Mar 21, 2015 · It's great to see that ON DELETE CASCADE is handled at the application layer (ex. Delete(&models. Those take a different code path internally, even though they end up modifying the same data. In House: House. Well, the obvious (and probably wrong) answer would be to stop deleting rows from "Detail" or "Details". The ON DELETE CASCADE doesn't seem to be working, if I delete accounts, all follower records remain in the followers table. deleteAll() method to do the following: @Override. i'm using PostgresSQL 15. If so, when the referenced value is removed, all these are deleted, as you would expect in a CASCADE. Jan 28, 2012 · The database is dropped successfully, however, the schema for the database is still left. Emin Laletovic. RESTRICT: When a row is deleted from the parent table, the delete operation is aborted if there are any related rows in the child tables. You would just modify the constraints to add the CASCADE deletes to the schemas: Drop and re-create the constraints to add CASCADE deletes: ALTER TABLE ONLY "transaction". 在我们开始研究在 PostgreSQL 中实现 ON DELETE CASCADE 的不同解决方案之前,我们将首先了解 ON DELETE CASCADE 的含义以及它的作用。. How can I figure out what is causing these huge delays? Could it be that sometimes Postgres prefers to do a Sequential scan (due to the number of rows)? Dec 16, 2019 · Due to a misconception of the PostgreSQL database I work with everyday, on the 155 tables that the schema of the database contains, some tables with foreign key doesn't have the ' on delete cascade ' clause which cause serious trouble as you can expect. Setting cascade: true on Author tells TypeORM that if a new book is appended on an author and the author is saved, the new book should also be saved to the database. Several Foreign Key and Cascade Delete SQL Server. DROPing a table with a view attached to it will delete the view. The column of the table with the constraint may have multiple values that refer to the column in the table. – Apr 22, 2020 · Both ways fail as explained below. models. tag_id ) DELETE from tag t where t. I've set cascade = CascadeType. cause the deletion to cascade. delete(brand) ); } Still does not work. id FROM team_member WHERE team_member. Gotcha! There's an important caveat here. They are not checked when you effect a system catalog data change using a DDL command such as DROP TABLE. In fact, other options are not needed. If so, use JPA cascade delete on the parent to child relationship instead. If you feel the need to do this for a column which is not a foreign key, it means that Mar 29, 2011 · 7. Iterable<Brand> iter = this. FROM pg_constraint. DELETE is the row-level DML statement for removing data from a table. You need to know how rows end up in "Transaction_Results" or how Aug 15, 2016 · I'd like to delete them all, i. Jul 3, 2019 · Click on OK. Django), but this perk is not always available outside of the Django world. team_member_id IN (SELECT team_member. user_id int primary key, group_id int references groups on update cascade. This is because by default when you delete a parent record SqlAlchemy does something really weird. What could be the cause of this? Jun 20, 2013 · ON DELETE of parent CASCADE [by deleting] here. However, the rows are not deleted. I have two tables: CREATE TABLE catalogItem ( contractNumber varchar (40) NOT NULL, -- REFERENCES contractVendor (contractNumber) edited. Apart form these two, you have to somehow manage the deletion yourself. 4. Use DELETE FROM first;, it will delete all the values (but keep the table definition itself), and it will cascade to the referencing data in the second table. Apr 14, 2023 · I thought DROP is like a DELETE at a row level and CASCADE removes any foreign key constraint. You'll see that it respects the deletedAt time and doesn't actually remove it from the db, but instead the services will automatically not return it if respecting the flag. common ADD CONSTRAINT common_pin_file Sep 13, 2022 · WITH Bdeletes AS ( DELETE FROM team_member_tag tmt WHERE tmt. I am slowly learning, there is the ansi-standard To solve the issue, the statement should have been: CREATE TABLE followers (. If you're going to hit multiple cascade paths, my advice would be to make the implementated solution consistent. Once you click on Yes, a foreign key with delete rule is created. Constraints are only checked when you execute SQL-level DML commands such as DELETE or UPDATE. Jun 29, 2016 · In Postgres (and other RDBMs) cascading updates apply exclusively to foreign keys. Provide details and share your research! But avoid …. Disable constraints and delete data, then re-enable again. May 30, 2021 · If ON UPDATE CASCADE recurses to update the same table it has previously updated during the cascade, it acts like RESTRICT. Sep 9, 2020 · If your data model allows you to not hit multiple cascade paths, and you're certain you don't mind the 'oops'. In your diagram tables B, D, E are independent (Parent) and tables A and C are dependent Jun 8, 2020 · In this case, would there be a way to ignore the trigger for a cascade delete, or otherwise to delete a person? Even if it is still preferable to change the model as you recommend, I am curious if it is possible to stick with my original model while maintaining the constraint and allowing DELETEs from the persons table. I'm having a constraint issue when trying to delete an object containing a OneToMany relationship which should not be happening. You should use CASCADE deletes, and it should be possible to do so even if you inherited a database schema. hasMany(models. By employing this feature, you can define that a foreign key constraint automatically deletes all referencing rows in child tables when a corresponding row is deleted from the parent table. UPDATE 2: It only appears to be a problem via tests. This project is based on NestJS and Postgresql. team_id = 91 AND team_member. Jul 17, 2016 · 2 Answers. Because in table PERSONS i find only (Name, IDPERSON, Telephone, Email, etc) and in Student/Emplyee I find more technical details, such as Mar 19, 2018 · deletedAt: Date; If you have this decorator and then have is turned on in a service. You are right, the answer is NO. Next I would check what is actually set in the database. ); Code language: SQL (Structured Query Language) (sql) When a DELETE CASCADE feature is enabled, deleting a record from the referenced/parent table will also delete the referencing records from the child table. But PostgreSQL has a non-standard extension that lets you use multiple constraint clauses in a single SQL statement. REFERENCES departments( id) . Click on Close and save the table in the designer. userId: varchar ( 'user_id', { length: 32 }). e. id_follower INT NOT NULL, id_following INT NOT NULL, PRIMARY KEY (id_follower, id_following), CONSTRAINT follower_fk. created_at. For example 13. There are two other options: SET NULL and SET DEFAULT. I can't find how to add ON DELETE CASCADE rule in pgAdmin 3. User{ID: id}) answered Aug 26, 2022 at 7:46. That is if I delete the INVOICE, then delete all of the ITEMS on that INVOICE. id, q. Sorted by: 1. It should be something like this: Database. notNull (), This object has onUpdate as well and all possible values for it Also if you will just add those and generate migrations you may not see migrations files for it. 5. Having said this, if you delete a parent entity in Entity Framework, it will attempt to issue delete statements for any child entities which Cascade Deletes. 让我们假设你有两个表,其中一个从父表继承一个 KEY 并 Oct 7, 2015 · DROPing a domian with CASCADE removes every column in any table that uses that domain. Jan 27, 2013 · An aside: in the scenario you described, as long as the key pointing from C to B is set to ON DELETE CASCADE, everything will cascade through. You should be able to just drop the constraint, rebuild it with cascade, do your deletes, drop it again, and the rebuild it with restrict. ); INSERT INTO t1 VALUES(1, 'one'); INSERT INTO t2 VALUES(1, 'first'); DELETE FROM t1; SELECT * FROM t2; -- should have not rows - have one! use this all the time in postgres, but for some reason cannot get it going in mysql. references ( () => users. aircraft_code ); Also, you can define a view and use a trigger instead of delete. So, no there is no way to let EF handle this. DELETE FROM films USING producers. The problem you've described only comes about if you have some constraints in a constraint chain set to cascade, and others not. file_load ( sid serial NOT NULL, file_name_full text, file_name text, file_creation_date text, load_universal_time numeric, headers text, date timestamp without time zone DEFAULT now(), CONSTRAINT file_load_pkey PRIMARY KEY (sid) ) Given constraint: ALTER TABLE provider_input. So, I have tried with deleting a row from master_bill table: Apr 18, 2013 · However I am not sure if I am mimicking what is actually done when there is an ON DELETE CASCADE trigger. Refuse to truncate if any of the tables have foreign-key references from tables that are not listed in the command. The usual way to do that would be to add ON DELETE CASDADE to the table definition, but unfortunately I'm not in a position to make changes to the database schema (don't want to create migration headaches for my coworkers). In case you want to delete all items in primary table and delete corresonding record, it is possible with Truncate cascade. Example: group_id int primary key. My noob understanding is that deleteing one of these: CREATE TABLE provider_input. Bilal Shahid 2022年5月14日. These cause the referencing columns to be set to nulls or default values, respectively, when the referenced row is deleted. Apr 24, 2019 · When deleting a view (Right click > Delete), the checkbox Cascade delete seems not to be taken into account. Oct 19, 2016 · I have function that I wrote as part of a trigger, but cannot drop the function with DROP FUNCTION aft_delete();. May 16, 2022 · Rubyists might take special pleasure here, but every SQL and PostgreSQL dev can learn this unorthodox approach: putting soft delete logic on the database side. I'm still getting issue event follow official document for { onDelete: 'cascade', hooks: true }. Please refer to the below sample image. 3. Why is this the case? Feb 4, 2023 · In Postgres, the delete cascade behavior can be used to automatically delete child records when their parent is deleted, maintaining the integrity of the database. Looks like you are confused by the fluent configuration. Let’s take a look at an example. I have two tables: CREATE TABLE catalogItem May 24, 2022 · 1. aircraft_code=a. Nov 13, 2019 · When i try to delete rows from a table, it does not work. In your case (suppose you have table_x and table_y that depends on table_x) when you delete row in table_x and this row is referenced from table_y, row from table_x would be deleted and all rows that referenced this row in table_y would be deleted as well. id int PRIMARY KEY references vehicle, Model TEXT ); You can see the REFERENCES tag at the end of the definition of ID. Cascade seems to work okay with the app running. Am I not using it correctly? Dec 2, 2019 · The question on when to cascade delete, when to restrict delete, is an interesting one, and I haven't figured out a definitive answer yet. Sep 24, 2018 · I want to impose certain conditions, but only if the DELETE is not caused by the CASCADING keyword of a foreign key constraint. Jun 16, 2016 · 4. The id field in fruits is used as a foreign key In this article, we will learn ON DELETE CASCADE in PostgreSQL. Automatically truncate all tables that have foreign-key references to any of the named tables, or to any tables added to the group due to CASCADE. "Parent table (the table having the Foreign Key, or is it the other way around?)" It is the other way around. Postgres foreign key on delete cascade deletes all but 1, why? Apr 29, 2023 · SELECT q. WHERE producer_id = producers. ); CREATE TABLE employees ( id SERIAL PRIMARY KEY , name VARCHAR ( 100) NOT NULL , department_id INT NOT NULL , FOREIGN KEY (department_id) . We have this issue for MySQL, which I almost fixed and soon well deploy Aug 26, 2022 · If you are using gorm v2, you can try deleting the main object, its relation, and the associated objects by using delete with select. Dec 30, 2016 · Dec 29, 2016 at 15:27. Disable constraints : Alter table tablename NOCHECK CONSTRAINT constraintname. Informally I'm thinking in terms of how important is the information, and can it be recreated from an external source? Sep 14, 2012 · How can we use the cascade in PostgreSQL while deleting the one record from the parent table that is being referred in other child tables. Note that these do not excuse you from Do not change the values of sequences. Why does it make sense that dropping a table which is referenced by other tables does not delete the tables that reference this one as well? Convienience? Jul 13, 2014 · The ondelete='CASCADE' is the part that creates the ON DELETE CASCADE on the table. This will ensure that when a record in the parent table is deleted, all associated records in the child table are automatically removed as well. Dec 9, 2021 · order_info_order_id_fkey (order_id) -> order_t(id) ON DELETE CASCADE. id int PRIMARY KEY, OWNER TEXT ); Now let’s define another table called BUS, which will inherit the key ID from VEHICLE. 156. In the INSERT and UPDATE specifications, select Cascade for the delete rule. I'm successful in doing it by using @OnDelete(action = OnDeleteAction. This is the default. Currently it is giving the syntax error. OrphanRemoval tells the ORM that if I remove an Item object from the collection of Items that belong to an Invoice object (in memory operation), and then "save" the Invoice, the May 14, 2022 · PostgreSQL 中的外键 ON DELETE CASCADE. [ CASCADE | RESTRICT ]; Code language: SQL (Structured Query Language) (sql) In this syntax: First, specify the name of the trigger you want to delete after the DROP TRIGGER keywords. ON table_name. The FK goes into the child table. If the migration fails because the database server warns you about multiple cascade paths, it's because you haven't properly configured the fluent API. So, let’s start! 3 days ago · The ON DELETE CASCADE is the action on the foreign key that will automatically delete the rows from the child_table whenever corresponding rows from the parent_table are deleted. The generated script (via button View script) is always the same: DROP VIEW <shema>. But that is an attribute of the foreign key, nothing you can specify with the DELETE statement. header_id serial NOT NULL, CONSTRAINT header_pkey PRIMARY KEY (header_id) ); CREATE TABLE detail. Try the new PgManage (Open Source) and get rid of PgAdmin! This Postgres blog will present a step-by-step guide on how to use the DELETE CASCADE option in Postgres. Jul 20, 2021 · For a project i need the OneToOne relationship of Typeorm. Short answer. Here's my solution: Step 1: Create migration files as usual but no foreign key yet. If you had to drop database again and again, it's better to disable constraints till you find the right culprit or re-design the schema. 0, and have enabled rewritebatchedinserts property (note batch is enabled) When I try to saveAll for saving a size of 2 Entity and each Entity containing 2 instance of Entity2 I end up with 6 insert query (from the logs) and. id as author_id, q. Aug 3, 2018 · You can apply the same for your case. PostgreSQL DELETE CASCADE example. Click Yes in the warning message window. If you create the tables like this: CREATE TABLE btable (aid INT NOT NULL UNIQUE, …) CREATE TABLE atable (aid INT NOT NULL FOREIGN KEY REFERENCES (aid) ON DELETE CASCADE, …) then a delete from btable will trigger a delete from atable as Entity Framework will not take responsibility for cascading a delete in the database – it expects that you will achieve this by setting a cascading delete on the foreign key relationship in the RDBMS. Oct 7, 2015 · DROPing a domian with CASCADE removes every column in any table that uses that domain. is it possible either to delete all rows from all tables with a single command in postgres. id SERIAL PRIMARY KEY , name VARCHAR ( 100) NOT NULL . That tells you which deletes (deletes of the parent) get cascaded, where the ON DELETE CASCADE statement goes (on the child), and what gets deleted (the child). Let’s begin with creating a Vehicle table first. brandRepository. member_id = 1) returning tmt. This is possible. Select("Profile"). Try deleting a child and see if its parent gets removed. Oct 4, 2023 · ON DELETE CASCADE is a powerful feature in Postgres that can make database management easier and ensure referential integrity. associate = function (models) {. Feb 19, 2016 · I'm not familar with OpenJPA, but if it is like the JPA cascade option (which is likely), then it applies from Child to Parent, not the other way around like you seem to expect. I can do this within a transaction: begin; alter table posts drop constraint posts_blog_id_fkey; alter table posts add constraint posts_blog_id_fkey foreign key (blog_id) references blogs (id) on update no action on delete cascade; commit; Feb 5, 2024 · This guide delves into the ON DELETE CASCADE feature in PostgreSQL, a powerful tool for automating the deletion of child records upon the removal of their parent records, thus ensuring database Jun 10, 2017 · Im trying to get make a delete cascade trigger that, whenever I delete a PERSON, it deletes the row in table PERSONS and it deletes depending if that person was putten in table STUDENTS or EMPLOYEES. Just in case if you're not aware about standard SQL way of doing it. when I try inserting 1000 rows with and without rewritebatchedinserts option, there is hardly Dec 11, 2020 · I'm working with a copy (DB-B) of a database (DB-A) I keep up to date by running daily: pg_restore -U postgres -d someDB --clean -j 2 -L WhatToImportList admin. 2. <tab Apr 29, 2023 · SELECT q. I want to do the following in PostgreSQL (using Hibernate): ALTER TABLE fruits ADD CONSTRAINTS id ON DELETE CASCADE; Obviously, my code above is not working, so I am looking for the correct statement. I thought that if order from order_t table is deleted that all relevant rows from other tables would be deleted too, but that is not the case, only order_info row is deleted on cascade. Notice how I have a relationship specified with passive_deletes=True? If you don't have that, the entire thing will not work. ON DELETE CASCADE . Something like. No. You might have been looking for TRUNCATE first as well, possibly TRUNCATE first CASCADE which is the same as Sep 2, 2014 · Now the problem is, when i delete a Thread, all the post associated with it must also be removed. Apr 17, 2014 · The problem here is some time migration script generated missing CONSTRAINT for foreign key. destroy(); I get the following error: Oct 22, 2008 · CASCADE specifies that when a referenced row is deleted, row (s) referencing it should be automatically deleted as well. Mar 2, 2015 · ON DELETE CASCADE not working. Read the tutorial in the PostgreSQL documentation on foreign keys. Look up the current FK definition like this: SELECT pg_get_constraintdef(oid) AS constraint_def. If I can't do that, then how about the following: I have a bunch of data in my table fruits. Mar 22, 2023 · To use DELETE CASCADE in Postgres, you need to create a foreign key constraint on the child table, specifying the CASCADE option when defining the relationship between the child and parent tables. A more standard way to do it is: DELETE FROM films. Apr 21, 2020 · For #3, I read in the Postgres docs that we might be able to use a multi-column GIN index on (item_id, old_revision_id, new_revision_id) which could support the cascading delete like delete from changeset_deltas where old_revision_id = <deleted_revision_id>: Jan 18, 2020 · 1. RESTRICT. jk gy qr ak fo tb xv ii rp mo