SQLite - 删除最低ID的行

Question

如何从具有最低rowid的表中删除一行？ 谢谢。

Answer 1

DELETE FROM 
    MyTable 
WHERE 
    Id = (SELECT MIN(Id) FROM MyTable); 

Answer 2

DELETE FROM 
    tablename 
WHERE 
    rowid= (SELECT MIN(rowid) FROM tablename) 

Answer 3

在大多数情况下这样的，ROWID是一个索引列。如果是这样的情况下，多更快的解决方案是：

DELETE FROM 
    tablename 
WHERE 
    rowid= (SELECT rowid FROM tablename order by rowid limit 1) 

如果ROWID不是那么索引：

DELETE FROM 
    tablename 
WHERE 
    rowid= (SELECT MIN(rowid) FROM tablename) 

我仍然测试的第一个，因为它往往会更快，甚至如果rowid未编入索引。