Dependency Additions For PostgreSQL 7.3 Upgrades
In PostgreSQL releases prior to 7.3, certain database objects didn't
have proper dependencies. For example:
1) When you created a table with a SERIAL column, there was no linkage
to its underlying sequence. If you dropped the table with the SERIAL
column, the sequence was not automatically dropped.
2) When you created a foreign key, it created three triggers. If you
wanted to drop the foreign key, you had to drop the three triggers
individually.
3) When you created a column with constraint UNIQUE, a unique index was
created but there was no indication that the index was created as a
UNIQUE column constraint.
Fortunately, 7.3 now tracks such dependencies and handles these cases.
Unfortunately, PostgreSQL dumps from prior releases don't contain
such dependency information.
This script operates on >= 7.3 databases and adds dependency information
for the objects listed above. It prompts the user on whether to create
a linkage for each object. You can use the -Y option to prevent such
prompting and have it generate all possible linkages.
This program requires the Pg:DBD Perl interface.
Usage:
adddepend [options] [dbname [username]]
Options:
-d <dbname> Specify database name to connect to (default: postgres)
-h <host> Specify database server host (default: localhost)
-p <port> Specify database server port (default: 5432)
-u <username> Specify database username (default: postgres)
--password=<pw> Specify database password (default: blank)
-Y The script normally asks whether the user wishes to apply
the conversion for each item found. This forces YES to all
questions.
Rod Taylor <rbt@rbt.ca>
dfebfc1bc8