增量表统计信息

Question

the log of a delta table stores metadata about the transactions and about statistics (data type, min, max, nr. columns etc). However, I can only see the data types when looking into the json file of this log. Does anyone know how to obtain the min, max and nr. columns of this delta table without computing anything (since the delta table should have this information when reading the file)?

Answer 1

This depends on if you are using open source version or Databricks version. The former don't have this functionality, it exists only in DB version