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在mYsql中按字符长度排序字符串？

2024-04-24 11:16:03 361

您可以借助MySQL的CHAR_LENGTH()函数按字符长度排序。该函数返回以下字符串的字符数，即4：

AMIT

要按字符长度排序字符串，以下是语法-

select *from yourTableName order by CHAR_LENGTH(yourColumnName);

为了理解上述概念，让我们首先创建一个表。以下是创建表的查询-

mysql> create table OrderByCharacterLength
   −> (
   −> BookName varchar(200)
   −> );

借助insert命令将一些记录插入表中。查询如下-

mysql> insert into OrderByCharacterLength values('Let us C');

mysql> insert into OrderByCharacterLength values('Introduction to C');

mysql> insert into OrderByCharacterLength values('Data Structure And Algorithm in Java ');

mysql> insert into OrderByCharacterLength values('C in Depth');

mysql> insert into OrderByCharacterLength values('Java Projects');

让我们按插入上表的顺序显示所有记录。查询如下-

mysql> select *from OrderByCharacterLength;

以下是输出-

+---------------------------------------+
| BookName                              |
+---------------------------------------+
| Let us C                              |
| Introduction to C                     |
| Data Structure And Algorithm in Java  |
| C in Depth                            |
| Java Projects                         |
+---------------------------------------+
5 rows in set (0.00 sec)

这是显示根据字符长度排列的所有记录的查询。如果列值的长度最小，那么它将获得更高的优先级，并将首先显示。

查询如下-

mysql> select *from OrderByCharacterLength order by CHAR_LENGTH(BookName);

以下是输出-

+---------------------------------------+
| BookName                              |
+---------------------------------------+
| Let us C                              |
| C in Depth                            |
| Java Projects                         |
| Introduction to C                     |
| Data Structure And Algorithm in Java  |
+---------------------------------------+
5 rows in set (0.00 sec)

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在mYsql中按字符长度排序字符串？

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