Logstash how to synchronize MySQL one to many relational table data and implement nested object storage in elasticsearch?

Hi,I am a novice for Logstash,My project needs full text search, and then I chose logstash synchronous MySQL database, but I encountered some problems in the process.
**question:**Logstash how to synchronize MySQL one to many relational table data and implement nested object storage in elasticsearch?And how to write the logstash configuration file?Is the data synchronized by single table, then processed or processed on the SQL level? I'm puzzled。
If anyone knows, I would be grateful.Thanks!!!!

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