In my table I've data in date field as 5/1/2012, it is of type varchar
在我的表中,我将日期字段中的数据作为5/1/2012,它的类型为varchar
I need to alter the column as date and update the date as 2012-05-01
我需要将列更改为日期并将日期更新为2012-05-01
Any idea?
2 个解决方案
#1
0
Inorder to modify the table column_type perform:
为了修改表column_type执行:
ALTER TABLE table_name MODIFY COLUMN column_name date
ALTER TABLE table_name MODIFY COLUMN column_name date
But note that Invalid DATE, DATETIME, or TIMESTAMP values are converted to the “zero” value of the appropriate type
但请注意,无效的DATE,DATETIME或TIMESTAMP值将转换为相应类型的“零”值
So if 5/1/2012 is the input value already in the table, it will be converted to 0000-00-00
因此,如果5/1/2012是表中已有的输入值,则将其转换为0000-00-00
Please refer http://dev.mysql.com/doc/refman/5.1/en/datetime.html for details
有关详细信息,请参阅http://dev.mysql.com/doc/refman/5.1/en/datetime.html
#2
0
STR_TO_DATE(datestring, '%Y-%d-%m')
try this in your query....
在你的查询中尝试这个....
#1
0
Inorder to modify the table column_type perform:
为了修改表column_type执行:
ALTER TABLE table_name MODIFY COLUMN column_name date
ALTER TABLE table_name MODIFY COLUMN column_name date
But note that Invalid DATE, DATETIME, or TIMESTAMP values are converted to the “zero” value of the appropriate type
但请注意,无效的DATE,DATETIME或TIMESTAMP值将转换为相应类型的“零”值
So if 5/1/2012 is the input value already in the table, it will be converted to 0000-00-00
因此,如果5/1/2012是表中已有的输入值,则将其转换为0000-00-00
Please refer http://dev.mysql.com/doc/refman/5.1/en/datetime.html for details
有关详细信息,请参阅http://dev.mysql.com/doc/refman/5.1/en/datetime.html
#2
0
STR_TO_DATE(datestring, '%Y-%d-%m')
try this in your query....
在你的查询中尝试这个....