如何创建我的MySQL视图尊重与数据库的默认相同的字符编码？

Question

我正在使用MySQL 5.5.37。对于我的数据库默认的编码是UTF8 ...

mysql> SELECT default_character_set_name FROM information_schema.SCHEMATA WHERE schema_name = "my_db"; 
+----------------------------+ 
| default_character_set_name | 
+----------------------------+ 
| utf8      | 
+----------------------------+ 
1 row in set (0.00 sec) 

然而，当我创建一个使用

CREATE OR REPLACE VIEW report_toc_item AS 
SELECT ti.*, pti.type_id PARENT_TYPE_ID 
      FROM toc_item ti 
      JOIN toc_item pti ON pti.id = ti.parent_id 
      WHERE ti.type_id = 'sub_segment'; 

，然后我表明，图的图中，cndoing被显示为“latin1的”，而不是utf8 ...

mysql> show create view report_toc_item; 
+--------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+ 
| View    | Create View                                                                                                                                                                                                                              | character_set_client | collation_connection | 
+--------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+ 
| report_toc_item | CREATE ALGORITHM=UNDEFINED DEFINER=`mytestuser`@`localhost` SQL SECURITY DEFINER VIEW `report_toc_item` AS select `ti`.`ID` AS `ID`,`ti`.`PARENT_ID` AS `PARENT_ID`,`ti`.`TOC_ID` AS `TOC_ID`,`ti`.`TITLE` AS `TITLE`,`ti`.`DESCRIPTION` AS `DESCRIPTION`,`ti`.`TYPE_ID` AS `TYPE_ID`,`ti`.`ORDER_NUM` AS `ORDER_NUM`,`ti`.`MY_OBJECT_SEGMENT_ID` AS `MY_OBJECT_SEGMENT_ID`,`ti`.`MY_OBJECT_SEGMENT_ORDER_NUM` AS `MY_OBJECT_SEGMENT_ORDER_NUM`,`ti`.`ELEMENT_ID` AS `ELEMENT_ID`,`ti`.`UNIT_TOC_ITEM_ID` AS `UNIT_TOC_ITEM_ID`,`ti`.`SHORT_NAME` AS `SHORT_NAME`,`ti`.`THIRD_PARTY_PROMPT_ID` AS `THIRD_PARTY_PROMPT_ID`,`pti`.`TYPE_ID` AS `PARENT_TYPE_ID` from (`toc_item` `ti` join `toc_item` `pti` on((`pti`.`ID` = `ti`.`PARENT_ID`))) where ((`ti`.`TYPE_ID` = 'sub_segment') and ((`pti`.`TYPE_ID` = 'lesson') or (`pti`.`TYPE_ID` = 'activity') or (`pti`.`TYPE_ID` = 'activity_practice') or (`pti`.`TYPE_ID` = 'unit_opener'))) | latin1    | latin1_swedish_ci | 
+--------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+ 
1 row in set (0.00 sec) 

如何让我的视图尊重数据库的默认编码？我宁愿不将编码硬编码到视图的创建中。

Answer 1

SHOW CREATE DATABASE mydb; -- to see what the database's charset is 
SHOW VIEW x; -- to get the body 
DROP VIEW x; 
SET NAMES utf8mb4; -- or whatever you got from the first step 
CREATE VIEW ... -- recreate the view. 

是的，笨拙。