如何使用 MySQL 查询用零填充或填充列？
您可以对列使用ZEROFILL来填充或填充零。让我们首先创建一个表-
mysql> create table DemoTable ( Number int );
以下是为Number列添加zerofill属性的查询-
mysql> alter table DemoTable change Number Number int(10) zerofill not null; Records: 0 Duplicates: 0 Warnings: 0
使用插入命令在表中插入记录-
mysql> insert into DemoTable values(1); mysql> insert into DemoTable values(12); mysql> insert into DemoTable values(123); mysql> insert into DemoTable values(1234); mysql> insert into DemoTable values(12345);
使用select语句显示表中的所有记录-
mysql> select *from DemoTable;
+------------+ | Number | +------------+ | 0000000001 | | 0000000012 | | 0000000123 | | 0000001234 | | 0000012345 | +------------+ 5 rows in set (0.00 sec)