SQL> --问题:如何查询Mary?
SQL> select vid,vname
2 from versions_table
3 versions between timestamp minvalue and maxvalue;
VID VNAME
---------- --------------------
2 MaryABCD
3 Mike
2 Mary
1 TOm
SQL> select vid,vname
2 from versions_table
3 versions between timestamp minvalue and maxvalue;
VID VNAME
---------- --------------------
2 MaryABCD
3 Mike
2 Mary
1 TOm
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