Cannot drop table users because other objects depend on it

Identifying the suspects (Dependencies)

It's like playing a game of Cluedo, you need to find out "Who, in the Library, with the Candlestick, killed my DROP TABLE query?" or something of that sort! Use the following SQL snippet to identify the culprits that depend on your users table:

SELECT obj.*
FROM pg_class c JOIN pg_depend d ON c.oid = d.objid
LEFT JOIN pg_class obj ON obj.oid = d.objid
WHERE c.relname = 'users';
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You will find the nemesis in the form of foreign key constraints, triggers or views. Identifying these fellas is the first step in maintaining peace in your database kingdom.

Terminating the "Terminators" (Dependencies Cleanup)

You can play contract killer and erase each dependent object manually with the snazzy SQL skills:

ALTER TABLE my_table DROP CONSTRAINT users_fk; -- Constraint? Hasta la vista, baby!
DROP VIEW IF EXISTS user_view; -- View? Gone with the wind!
DROP TRIGGER IF EXISTS user_trigger ON users; --Trigger? *Insert cool movie phrase about killing stuff here*
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This approach gives you better control, and you can avoid some nasty "Oops! I deleted what?" moments and maintain the sanity of your data.

Sections of the Operation Manual

Break the Circle (Remove circular references)

Remember the famous Kung Fu move, the "Circular Dependency Death Loop"? Okay, I just made that up, but really, get rid of circular dependencies first, or they will start kickin' and screamin', making your table drop convoluted.

Firing the "Trigger-man" (Handling of triggers)

In some databases like PostgreSQL, triggers can be as stubborn as a mule. If they're locked on to the users table, take 'em out with DROP TRIGGER:

DROP TRIGGER trigger_name ON users; -- The name's Trigger... Dropped Trigger.
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Compatibility Check-up

Not every database accepts your CASCADE love letter, sometimes you get a stamp of DBMS compatibility issues. It's prudent to check the compatibility before you go on a date with the CASCADE keyword, to avoid embarrassing syntax errors or strange system reactions.

Additional Safety Measures

Always have a Plan B (Backup before dropping)

As the old wisdom goes, "Don't put all your database in one DROP statement." Okay, I admit, it doesn't go exactly like that. But, seriously, backup your table or better the entire database before making any steak-knife-through-heart kind of decisions.

Play Safe (Role-based access control)

Get out your red velvet ropes, and only allow the VVIPs (Very Very Important Permissions) to perform the DROP TABLE operation, especially with CASCADE. This is another layer of safety that can save your precious data from visiting the recycle bin.