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flbuddymooreiv/compareschema.md

Last active August 21, 2017 10:03
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Testing PostgreSQL Schema compliance
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compareschema.md

Assuming a database mydb, and a canonical database file defined in a file tables.sql, here is a way to tell if an operational schema differs from the canonical one:

pg_dump -U postgres -a mydb > mydbdata.sql
psql -U postgres -c "drop database mydbcanonical"
psql -U postgres -c "create database mydbcanonical"
psql -U postgres -d mydbcanonical -f tables.sql
psql -U postgres -d mydbcanonical -f mydbdata.sql

The gist is to see if the operational database's data will load cleanly into the canonical schema. These commands depend on the admin to visually parse the output of the last command where the data is loaded into the test database for errors. If there are no errors of concern, the schema is compliant.

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