mysql×Ó²éѯ exists,not exists
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SELECT
d.Device_ID,d.Device_Name,a.App_ID,a.App_Name
from
T_Device_BaseInfo d ,T_App_Spce_R_Info da ,T_App_Info a
WHERE d.Spec_Code=da.Spec_Code AND da.App_ID=a.App_ID and
d.Device_ID=01;
+-----------+-------------+--------+----------------+
|
Device_ID | Device_Name | App_ID | App_Name |
+-----------+-------------+--------+----------------+
|
01 | coship01 | 01 | maliao |
| 01 |
coship01 | 02 | maliao |
| 01 | coship01 |
03 | red alert |
| 01 | coship01 | 05 |
COD |
| 01 | coship01 | 08 | flashplayer |
|
01 | coship01 | 09 | flashplayer6.0 |
+-----------+-------------+--------+----------------+
6 rows in set (0.00 sec)
==========½á¹û¼¯B£º
mysql> select * from T_Device_App_R_Info
where Device_ID=01;
+----+-----------+--------+------+------------+
|
ID | Device_ID | App_ID | Opr | Setup_Date |
+----+-----------+--------+------+------------+
|
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