Can Liquibase ignore checksums for a single changeset?

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I’m using Liquibase via the Gradle-Liquibase (v 1.1.1) plugin. I have the following changeset …

<changeSet id="create_my_stored_proc" author="davea" dbms="mysql" runAlways="true">
    <sqlFile endDelimiter="//" path="src/main/resources/scripts/create_my_stored_proc.sql" stripComments="true"/>
</changeSet>

Is it possible to set something such that checksums are ignored for this changeset only? The underlying procedure is in a state of flux that could be repeatedly updated and rather than create a new changeset each time, I would like the existing one to run upon every Liquibase build.

You can add the runAlways and/or runOnChange attributes.

Can Liquibase ignore checksums for a single changeset?, By following the “always append changes” rule you will ensure that all databases If the checksum of a changeSet in the current changelog file is different than what Multiple change sets should be consolidated into a single change set you want to reverse a done change set if it was executed and otherwise just skip it. To alert you to this problem, Liquibase stored checksums (md5 hashes) of each change that was ran. If the checksum of a changeSet in the current changelog file is different than what was executed before, Liquibase does not attempt to update anything.

You can disable the checks per changeSet using the <validCheckSum> tag with known good values.

For example, if the previous changeset had a checksum like 8:b3d6a29ce3a75940858cd093501151d1 and you wanted to tweak that changeSet (but not re-apply it where this step has already succeeded) then you could use something like this:

<changeSet author="me" id="mychangeset">
  <validCheckSum>8:b3d6a29ce3a75940858cd093501151d1</validCheckSum>
  <sqlFile ... />
</changeSet>

Dealing with Changing ChangeSets, The changeSet tag is what you use to group database changes/refactorings the databaseChangeLog, it reads the changeSets in order and, for each one, The value of storing the check sum is so that Liquibase can know if someone was a valid reason for the changeSet to have been changed and you want to ignore  Is it possible to set something such that checksums are ignored for this changeset only? The underlying procedure is in a state of flux that could be repeatedly updated and rather than create a new changeset each time, I would like the existing one to run upon every Liquibase build.

"RunAlways will still throw a checksum error by default, but you can always use runOnChange=true or any to change that."

Have a look at this ticket raised in liquibase: https://liquibase.jira.com/browse/CORE-2506

So, you could do:

<changeSet id="create_my_stored_proc" author="davea" dbms="mysql" runAlways="true">
    <validCheckSum>any</validCheckSum>
    <sqlFile endDelimiter="//" path="src/main/resources/scripts/create_my_stored_proc.sql" stripComments="true"/>
</changeSet>

Docs, Is there a way to disable checksum verification in liquibase, either in total or for just one changeset? We can manually add a checksum value to the changeset, so we have a workaround which is annoying but OK. 2. By default, Liquibase will look for a file called liquibase.properties in the current working directory, but you can specify an alternate location with the --defaultsFile flag. If you have specified an option in a properties file and specify the same option on the command line, the value on the command line will override the properties file value.

Skip checksum verification, Once a change set has been applied, Liquibase remembers it and Here we will tell you some of the reasons you might need to modify a change set and how to do it. If the checksums are the same, the change set is ignored (already another change set changes the default value of one of the columns  If so, Liquibase calculates the checksum of the XML change set and checks if this is the same as the stored checksum. If the checksums are the same, the change set is ignored (already applied and no change in XML change set). If the checksums are different, an error is raised.

How to modify a change set in Liquibase, The reason we have to do this is that liquibase keeps checksums of all will not re-run the new changeset for people who ran the original one. ChangeSet checksums: When a changeSet is executed, Liquibase stores a checksum and can fail or alter execution if it detects a change between the original definition of a changeSet when it was run and the current definition.

How to Modify a Bad Changeset - Documentation, I prefer to have each script handle a single task, such as creating a table, when possible. You can also create change sets with SQL, but Liquibase will not Skip this step if your database connection doesn't require anything extra. MD5SUM is the checksum Liquibase uses to determine if the change set file has been  Running Liquibase with –logLevel=INFO or even –logLevel=DEBUG can give additional output which can help you determine which changeSets are slow. Once you know what is slowing down your update, try to alter just those changeSets rather than throwing out the whole changelog and starting from scratch.

Comments
  • If you have runAlways="true" attribute for changeset it is applied for each Liquibase run is it what you want to achieve?
  • What I want is for this to be run every time and for checksums to be ignored. Does that make sense?
  • runAlways="true" runs it every time and checksum is not checked. I see that you already added it so asked for details.