INT data type range is -2,147,483,648 to 2,147,483,647. It is the most suitable data type to store the whole numbers for most use cases. An integer data use 4 bytes of storage memory. We can check it by using
The int data type is the primary integer data type in SQL Server. The bigint data type is intended for use when integer values might exceed the range that is supported by the int data type.bigint fits between smallmoney and int in the data type precedence chart....
Theintdata type is the primary integer data type in SQL Server. Thebigintdata type is intended for use when integer values might exceed the range that is supported by theintdata type. bigintfits betweensmallmoneyandintin the data type precedence chart. ...
如果启用了严格的 SQL 模式,超出范围会发生一个错误...数值表达式求值过程中的溢出会导致错误,例如,因为最大的有符号 BIGINT 值是 9223372036854775807,因此以下表达式会产生错误 mysql> SELECT 9223372036854775807...UNSIGNED) - 1; ERROR 1690 (22003): BIGINT UNSIGNED value is out of range in '(cast(0 as...
Here are the sizes and ranges of values for SQL Server，其他RDBMS也有类似的文档：...
方法:在一般的SQL语句前加上explain; 分析结果的含义: 1)table:表名; 2)type:连接的类型,(ALL/Range/Ref)。其中ref是最理想的; 3)possible_keys:查询可以利用的索引名; 4)key:实际使用的索引; 5)key_len:索引中被使用部分的长度(字节); 6)ref:显示列名字或者"const"(不明白什么意思); ...
0 。 示例 2： 输入：n = 11 输出：[2,9] 示例 3： 输入：n
Fixes an error message issue that occurs when you pass a bigint value as the last_sync_version argument of the CHANGETABLE function in SQL Server 2008 or in SQL Server 2008 R2.
range:索引范围扫描,对索引的扫描开始于某一点,返回匹配值域的行,常见于between、等的查询 ref:非唯一性索引扫描,返回匹配某个单独值的所有行。常见于使用非唯一索引即唯一索引的非唯一前缀进行的查找 eq_ref:唯一性索引扫描,对于每个索引键,表中只有一条记录与之匹配。常见于主键或唯一索引扫描 ...
问题出现在CAST(value AS USIGNED)将字符串转换成数值的过程中,出现这个问题的原因是value对应的数值在BIGINT UNSIGNED 的范围内。可能的情况是value的值太大,超出上限,太小超出下限0。 对于出现浮点数的情况下只能使用CAST(value AS SIGNED),