mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-22 14:03:24 +02:00
.. | ||
adddepend | ||
README.adddepend |
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>