It is possible to write custom hooks that can be used to filter out undesirable database operations such as those that could lead to data loss from being executed. The filter is an interface defining a function that takes take the operation and returns
true to execute the operation and false otherwise. By default, GraphQL Migrations does not apply any filter.
For example, if we want to prevent deletion of the tables and columns we can write the following filter to remove
column.drop operations from array:
removeDeletionOperations filter can then be used in the
migrateDB method as follows:
GraphQL Migrations has you covered and provides a
removeNonSafeOperationsFilter to avoid doing non safe operations such as table deletion and renaming.