在MySQL中搜索存储为varchar的日期之间？
您可以使用STR_TO_DATE()在存储为varchar的日期之间进行搜索。语法如下-
select *from yourTableName where STR_TO_DATE(LEFT(yourColumnName,LOCATE('',yourColumnName)),'%m/%d/%Y') BETWEEN 'yourDateValue1' AND 'yourDateValue2’;为了理解上述语法，让我们创建一个表。创建表的查询如下-
mysql> create table SearchDateAsVarchar -> ( -> Id int NOT NULL AUTO_INCREMENT, -> ShippingDate varchar(100), -> PRIMARY KEY(Id) -> );
使用INSERT命令在表中插入一些记录。查询如下-
mysql> insert into SearchDateAsVarchar(ShippingDate) values('6/28/2011 9:58 AM');
mysql> insert into SearchDateAsVarchar(ShippingDate) values('6/18/2011 10:50:39 AM');
mysql> insert into SearchDateAsVarchar(ShippingDate) values('6/22/2011 11:45:40 AM');使用select语句显示表中的所有记录。查询如下-
mysql> select *from SearchDateAsVarchar;
以下是输出-
+----+-----------------------+ | Id | ShippingDate | +----+-----------------------+ | 1 | 6/28/2011 9:58 AM | | 2 | 6/18/2011 10:50:39 AM | | 3 | 6/22/2011 11:45:40 AM | +----+-----------------------+ 3 rows in set (0.00 sec)
这是在存储为varchar的日期之间进行搜索的查询-
mysql> select *from SearchDateAsVarchar where
STR_TO_DATE(LEFT(ShippingDate,LOCATE(' ',ShippingDate)),'%m/%d/%Y') BETWEEN
'2011-06-20' AND '2011-06-28';以下是输出-
+----+-----------------------+ | Id | ShippingDate | +----+-----------------------+ | 1 | 6/28/2011 9:58 AM | | 3 | 6/22/2011 11:45:40 AM | +----+-----------------------+ 2 rows in set (0.00 sec)