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mysql> SELECT 5 & ~1;

        -> 4


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SQL code:

mysql> select * from test;
Empty set (0.00 sec)

mysql> insert into test values('''');
Query OK, 1 row affected (0.03 sec)

mysql> select * from test;
+------+
| str |
+------+
| ' |
+------+
1 row in set (0.00 sec)




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