On 07/11/2018 03:21 PM, Christopher Browne wrote:
I have built one that I call Mahout
(https://github.com/cbbrowne/mahout) which has the merit of involving
just two shell scripts, one of which is an auditing tool (pgcmp).

It implements a "little language" to indicate dependencies between the
SQL scripts that implement the DDL changes.

The notable thing that I have seen "downthread" that it does not
attempt to implement is "rollback scripts."  I find that "necessity"
to be a ruby-on-rails dogma that does not seem to fit what I see
people doing.

Where I work, the requirement to have rollback scripts is part of the ITIL requirement for Changes to have a backout procedure.

Angular momentum makes the world go 'round.

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