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CREATE PROCEDURE `ba3`(id int)
begin
START TRANSACTION;£­£­£­£­£­£­¼ÓÉÏÁË
savepoint sp£»
begin
update  ba2 a, (select max(a) as aa  from ba2 where a  < id) b set a.b=1 where a.a=b.aa;
delete from ba2 where a=id;
end;
if @@error_count=0 then
commit;
else
rollback sp;
end if£»
end;

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mysql> select * from ba2;£­£­£­£­£­£­£­£­£­£­£­£­£­Ã»ÓÐ×÷²Ù×÷ǰ ԭʼÊý¾Ý
+------+-----+
| b    | a  |
+------+-----+
|    1 |  1 |
|    0 | 102 |
|    0 | 103 |
|    0 | 104 |
+------+-----+
4 rows in set (0.00 sec)

mysql> call ba2(103);
ERROR 1054 (42S22): Unknown column 'id22' in 'where clause'
mysql> select * from ba2;£­£­£­£­£­£­£­£­£­£­£­£­Ö´ÐÐÍêºó
+------+-----+
| b    | a  |
+------+-----+
|    1 |  1 |
|    1 | 102 | £­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­£­°´ÕÕ»á¹ö ²»Òò¸ÃÕâÀïb£½1  Ïà·´Ó¦¸ÃΪ0²Å¶Ô
|    0 | 103 |
|    0 | 104 |
+------+-----+
4 rows in set (0.00 sec)


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