不存在爲什麼？

Question

我的嘗試， 但獲取像表'dbname.rep3'的錯誤消息不存在。

爲什麼？

DROP TEMPORARY TABLE IF EXISTS rep1; 
DROP TEMPORARY TABLE IF EXISTS rep2; 
DROP TEMPORARY TABLE IF EXISTS rep3; 

CREATE TEMPORARY TABLE `rep1`(SELECT * FROM `config`); 
CREATE TEMPORARY TABLE `rep2`(SELECT * FROM `config`); 
/*CREATE TEMPORARY TABLE `rep3` SELECT * FROM `rep1` UNION ALL SELECT * FROM `rep2`; 
SELECT * FROM `rep3`; */ 

CREATE TEMPORARY TABLE `rep3` SELECT * FROM `rep1` UNION ALL SELECT * FROM `rep2`; 
SELECT * FROM `rep3`; 

Answer 1

它爲我

abdul@xmpp3:~$ mysql -uroot -p 
Enter password: 
Welcome to the MySQL monitor. Commands end with ; or \g. 
Your MySQL connection id is 334 
Server version: 5.5.29-0ubuntu0.12.04.1 (Ubuntu) 

Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. 

Oracle is a registered trademark of Oracle Corporation and/or its 
affiliates. Other names may be trademarks of their respective 
owners. 

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. 

mysql> use world_innodb; 
Reading table information for completion of table and column names 
You can turn off this feature to get a quicker startup with -A 

Database changed 
mysql> DROP TEMPORARY TABLE IF EXISTS rep1; 
Query OK, 0 rows affected, 1 warning (0.00 sec) 

mysql> DROP TEMPORARY TABLE IF EXISTS rep2; 
Query OK, 0 rows affected, 1 warning (0.00 sec) 

mysql> DROP TEMPORARY TABLE IF EXISTS rep3; 
Query OK, 0 rows affected, 1 warning (0.00 sec) 

mysql> 
mysql> CREATE TEMPORARY TABLE `rep1`(SELECT * FROM world_innodb.City); 
Query OK, 4079 rows affected (1.70 sec) 
Records: 4079 Duplicates: 0 Warnings: 0 

mysql> CREATE TEMPORARY TABLE `rep2`(SELECT * FROM world_innodb.City); 
Query OK, 4079 rows affected (1.29 sec) 
Records: 4079 Duplicates: 0 Warnings: 0 

mysql> 
mysql> CREATE TEMPORARY TABLE `rep3` SELECT * FROM `rep1` UNION ALL SELECT * FROM `rep2`; 
Query OK, 8158 rows affected (2.50 sec) 
Records: 8158 Duplicates: 0 Warnings: 0 

mysql> SELECT * FROM `rep3` LIMIT 10; 
+----+----------------+-------------+---------------+------------+ 
| ID | Name   | CountryCode | District  | Population | 
+----+----------------+-------------+---------------+------------+ 
| 1 | Kabul   | AFG   | Kabol   | 1780000 | 
| 2 | Qandahar  | AFG   | Qandahar  |  237500 | 
| 3 | Herat   | AFG   | Herat   |  186800 | 
| 4 | Mazar-e-Sharif | AFG   | Balkh   |  127800 | 
| 5 | Amsterdam  | NLD   | Noord-Holland |  731200 | 
| 6 | Rotterdam  | NLD   | Zuid-Holland |  593321 | 
| 7 | Haag   | NLD   | Zuid-Holland |  440900 | 
| 8 | Utrecht  | NLD   | Utrecht  |  234323 | 
| 9 | Eindhoven  | NLD   | Noord-Brabant |  201843 | 
| 10 | Tilburg  | NLD   | Noord-Brabant |  193238 | 
+----+----------------+-------------+---------------+------------+ 
10 rows in set (0.00 sec) 

在MySQLTEMPORARY TABLES工作是基於會話的，你不能從另一個會話訪問它們。您是否正在訪問其他會話的表格？您需要在同一個會話中訪問它們。