Skip to main content
Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Code code:"if (foo != bar)"
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Saves in:saves
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Results tagged with
Search options answers only not deleted user 82

Only use this tag when the question does not depend on a particular database management system.

20 votes
Accepted

Why won't some DBMS's allow rollback for certain DDL statements?

The reason why this works in PostgreSQL is that the system catalogs are regular tables. So creating a new function, for example, just requires inserting a row into the pg_proc table, changing the def …
Peter Eisentraut's user avatar