请问有前置依赖判断的解决方案吗？

一般同步都会有前置依赖判断，以决定是否可以同步，请问datax有没有相关的解决方案？
最近在想增量同步+前置依赖判断，头都要秃了，大牛有经验的话可以分享一下吗？
另外就是，如果失败了，是否有一个类似postSql和preSql那样的地方可以执行一下sql(能获取到错误信息，错误条数之类)，把错误的信息记录一下？

Start by reviewing DataX's existing preSql and postSql configuration paths, then trace how incremental synchronization and failures are handled. The issue does not name files or tests; a useful outcome would first define the dependency-checking and failure-SQL requirements, including which error details must be available.

Written by the indexing model from the issue text.