mysql按字母顺序获取表列名称

Question

是否可以查询MySQL数据库以获得按字母顺序排列的表的列名？我知道

SHOW COLUMNS `table_name`;

或

DESCRIBE `table_name`;

将给我一个表中的列的列表(以及其他信息)，但它可以改变查询，以获得列按字母顺序排序。按“Field”添加ORDER不起作用，它给出一个语法错误。

Answer 1

ANSI INFORMATION_SCHEMA tables (in this case, INFORMATION_SCHEMA.COLUMNS)在MySQL中提供了更多灵活性：

SELECT c.column_name
  FROM INFORMATION_SCHEMA.COLUMNS c
 WHERE c.table_name = 'tbl_name'
-- AND c.table_schema = 'db_name'    
ORDER BY c.column_name

Answer 2

在我使用group by column name之前，每个字段都列出了两次

 select c.COLUMN_NAME from INFORMATION_SCHEMA.COLUMNS c 
 where c.TABLE_NAME = `'tbl_name'` 
 group by c.column_name 
 order by c.column_name

Answer 3

如果你想要更多的细节，下面的查询非常方便：

   SELECT COLUMN_NAME  as 'Field',
   COLUMN_TYPE    as 'Type',
   IS_NULLABLE    as 'Null',
   COLUMN_KEY     as 'Key',
   COLUMN_DEFAULT as 'Default',
   EXTRA          as 'Extra'
   from INFORMATION_SCHEMA.COLUMNS
   where TABLE_NAME   = 'my table' and
   TABLE_SCHEMA = 'my database'
   add ordering
   order by Type;  --