sandynz commented on PR #20479:
URL: https://github.com/apache/shardingsphere/pull/20479#issuecomment-1225229396

   On column value match, some special cases notes:
   
   1, For timestamp column type, Oracle JDBC driver getObject and getTimestamp 
return different type of java object.
   
   resultSet.getObject(i).getClass().getName() return oracle.sql.TIMESTAMP.
   resultSet.getTimestamp(i).getClass().getName() return java.sql.Timestamp.
   
   2, java.math.BigDecimal value doesn't match if their scale doesn't match, 
even if values are equals.
   
   e.g. value1=332.2, value2=332.20, value1.class=java.math.BigDecimal, 
value2.class=java.math.BigDecimal
   They're not equals by BigDecimal.equals
   
   


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