哪种 MySQL 数据类型用于长小数?
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) -> ); Query OK, 0 rows affected (0.48 sec)
使用 insert 命令在表中插入一些记录 -
mysql> insert into DemoTable1493 values(1.0047464644664677373); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable1493 values(5.999999484757773); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable1493 values(0.009994995885885); Query OK, 1 row affected (0.21 sec)
使用 select 语句从表中显示所有记录 -
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)
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