A new topic, '<Preconditions> is not supported by sql file generation', has been made on a board you are watching.
You can see it at
http://liquibase.org/forum/index.php?topic=166.new#newThe text of the topic is shown below:
If I use <Preconditions> tags in a change log and then I execute it into updateDatabase ant task to generate sql file (not to update directly the database), I think the <preConditions> tags do not have any effect in the generated sql file.
We would have to consider the preconditions in the sql file to provide a good tool.
Maybe, in two ways:
a) Liquibase checks the preconditions in the moment of generating the sql file. If a precondition goes right, fails or gives a error, to act according to possibles values (halt,continue,mark_ran,warn) and to halt the generation of sql file, to skip the next changeSet or to write the statement in the sql file.
b) Liquibase writes each precondition tag into a sql procedure that represents the action of the precondition.
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http://liquibase.org/forum/index.php?action=notifyboard;board=1.0Regards,
The LiquiBase Community Forum Team.
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