Oracle SQL table data loss

I used it well a few days ago ,ORACLE SQL Some tables in the suddenly run out of data , There are column names but no data .

SELECT * FROM PER_PEOPLE_V7

No error content , The running result is null

After checking the authorization and log of the table, I can't see any problems .

---

Take the answer ：

PER_PEOPLE_V7 In fact, this can't be called a table , It is actually a view , You can view the underlying data processing statements of this view through the following statements ：

select text from all_views where view_name = 'PER_PEOPLE_V7';

Statements found by query , Conduct troubleshooting , It may be the one found out sql A table in the statement has no data , Or the correlation conditions need to be optimized , The problem will be solved .

I hope I can help you .

---