哪种MySQL数据类型用于长十进制？
为此，请使用DECIMAL(21,20)。让我们首先创建一个表-
mysql> create table DemoTable1493 -> ( -> LongValue DECIMAL(21,20) -> );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable1493 values(1.0047464644664677373); mysql> insert into DemoTable1493 values(5.999999484757773); mysql> insert into DemoTable1493 values(0.009994995885885);
使用select语句显示表中的所有记录-
mysql> select * from DemoTable1493;
这将产生以下输出-
+------------------------+ | LongValue | +------------------------+ | 1.00474646446646773730 | | 5.99999948475777300000 | | 0.00999499588588500000 | +------------------------+ 3 rows in set (0.00 sec)