在Transact-SQL 语句中,小数数值的常量自动转换为 decimal 数据类型,在转换时,使用最小的精度和小数位数。例如,常量 12.345 被转换为 numeric 值,其精度为 5,小数位为 3。 In Transact-SQL statements, a constant with a decimal point is automatically converted into a numeric data value, using the minimum...
2,在SQL Server中,小数常量的默认数据类型是decimal,decimal的优先级比float高。 In Transact-SQL statements, a constant with a decimal point is automatically converted into anumeric data value, using the minimum precision and scale necessary. For example, the constant 12.345 is converted into anumeric ...
The maximum value of 65 for M means that calculations on DECIMAL values are accurate up to 65 digits. This limit of 65 digits of precision also applies to exact-value numeric literals, so the maximum range of such literals differs from before. (There is also a limit on how long the text...
“Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered index [Execute SQL Task] Error: The value type (__ComObject) can only be converted to variables of type Object. [ODBC Driver Manager] Data source na...
在Transact-SQL 语句中,小数数值的常量自动转换为 decimal 数据类型,在转换时,使用最小的精度和小数位数。例如,常量 12.345 被转换为numeric值,其精度为 5,小数位为 3。 In Transact-SQL statements, a constant with a decimal point is automatically converted into anumeric data value, using the minimum prec...
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float是近似数值，存在精度缺失；decimal是精确数值，不存在精度损失。当数值不允许精度丢失时，使⽤ decimal数据类型存储数据。在计算⼩数的除法时，SQL Server 内部隐式升级数据类型，根据⼩数数值的数据类型，就近向float(24) 或float(53)转换。⼀，近似数值 float 表⽰近似数值，存在精度损失，数据类型是...
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conversion offloatvalues todecimalornumericis restricted to values of precision 17 digits only. Anyfloatvalue less than5E-18(when set using either the scientific notation of5E-18or the decimal notation of0.000000000000000005) rounds down to0. This restriction doesn't appear in SQL Server 2016 (13...