PostgreSQL DROP TABLE PostgreSQL Tutorial
Let s take some examples of using the PostgreSQL DROP TABLE statement 1 Drop a table that does not exist The following statement removes a table named author in the database DROP TABLE author Code language SQL Structured Query Language sql PostgreSQL issues an error because the author table does not exist
PostgreSQL Documentation 16 DROP TABLE, The name optionally schema qualified of the table to drop CASCADE Automatically drop objects that depend on the table such as views and in turn all objects that depend on those objects see Section 5 14 RESTRICT Refuse to drop the table if any objects depend on it This is the default
Postgresql On Delete Cascade Stack Overflow
ALTER TABLE table y DROP CONSTRAINT id x fk ADD CONSTRAINT id x fk FOREIGN KEY id x REFERENCES table x id ON DELETE CASCADE Deleting from table x and also from table y correct DELETE FROM table x WHERE id 1 Deleting all content from table x and table y TRUNCATE table x CASCADE
Postgresql CASCADE DELETE Just Once Stack Overflow, If you really want DELETE FROM some table CASCADE which means quot remove all rows from table some table quot you can use TRUNCATE instead of DELETE and CASCADE is always supported However if you want to use selective delete with a where clause TRUNCATE is not good enough
How Does One Write A DELETE CASCADE For Postgres
How Does One Write A DELETE CASCADE For Postgres , Drop and re create the constraints to add CASCADE deletes ALTER TABLE ONLY quot transaction quot DROP CONSTRAINT transaction slice id fkey ALTER TABLE ONLY quot transaction quot ADD CONSTRAINT transaction slice id fkey FOREIGN KEY slice id REFERENCES slice id ON DELETE CASCADE ALTER TABLE ONLY
Postgres DROP Table Manage To Drop A Table And Deleting The Table
How To DROP TABLE In PostgreSQL With Different Examples
How To DROP TABLE In PostgreSQL With Different Examples PostgreSQL DROP TABLE CASCADE IF EXISTS You can combine the keywords CASCADE and IF EXISTS and get the result accordingly in PostgreSQL by specifying both the keywords in the DROP TABLE statement The syntax is as follow DROP TABLE IF EXISTS table name1 table name2 CASCADE
Create Foreign Table Postgres Example Brokeasshome
Start a transaction drop the foreign key add a foreign key with on delete cascade and finally commit the transaction Repeat for each foreign key you want to change But PostgreSQL has a non standard extension that lets you use multiple constraint clauses in a single SQL statement For example How To Add quot on Delete Cascade quot Constraints Stack Overflow. 1 Would it be possible To cascade to other table when we drop a table Postgresql support this feature PostgreSQL DROP TABLE syntax DROP TABLE IF EXISTS table name CASCADE RESTRICT I tried with no luck DROP TABLE always removes any indexes rules triggers and constraints that exist for the target table However to drop a table that is referenced by a view or a foreign key constraint of another table CASCADE must be specified CASCADE will remove a dependent view entirely but in the foreign key case it will only remove the foreign key
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