"Specified cast is not valid." myReader.GetValue(44) is showing a value of 0.0 when this happens. 这个问题会在0值出现错误,一般数值则无错 SQL Server data type CLR datatype(SQL Server) CLR datatype(.NET Framework)floatSqlDouble Double the SQL float maps to the double datatype, so you s...
Float and Real Approximate-number data types for use with floating point numeric data. Floating point data is approximate; therefore, not all values in the data type range can be represented exactly. The ISO synonym forrealisfloat(24). float[(n)] Wherenis the number of bits that are used ...
FLOAT是一个4字节单精度浮点数。 与SQL标准相比,该类型不接受参数。 声明方式: SQL: FLOAT Java/Scala: Python: DOUBLE DOUBLE是一个8字节双精度浮点数。 声明方式: SQL: DOUBLE, DOUBLE PRECISION Java/Scala: Python: DOUBLE PRECISION是该类型的同义词。 日期和时间类型 DATE DATE是由年-月-日组成的日期数...
Converting FLOAT Values Here are some things to keep in mind when converting SQL SERVER FLOAT types: Converting to integer truncates a FLOAT type. Consider using STR over CAST when converting to character data. There are more formatting options. Though no longer a restriction, prior to SQL Serv...
smallmoneyMonetary data from -214,748.3648 to 214,748.36474 bytes moneyMonetary data from -922,337,203,685,477.5808 to 922,337,203,685,477.58078 bytes float(n)Floating precision number data from -1.79E + 308 to 1.79E + 308. The n parameter indicates whether the field should hold 4 or 8...
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...
FLOAT:4 字节大小的单精度浮点数值,就和 Java 中的 float 一样。 DOUBLE、DOUBLE PRECISION:8 字节大小的双精度浮点数值,就和 Java 中的 double 一样。 关于FLOAT 和 DOUBLE 的区别可见 https://www.runoob.com/w3cnote/float-and-double-different.html。
⭐ FLOAT:4 字节大小的单精度浮点数值,就和 Java 中的 float 一样。 ⭐ DOUBLE、DOUBLE PRECISION:8 字节大小的双精度浮点数值,就和 Java 中的 double 一样。 ⭐ 关于 FLOAT 和 DOUBLE 的区别可见 https://www.runoob.com/w3cnote/float-and-double-different.html ⭐ 布尔类型:BOOLEAN ⭐ NULL ...
3.1.2Additional PL/SQL Constants for BINARY_FLOAT and BINARY_DOUBLE The SQL data typesBINARY_FLOATandBINARY_DOUBLErepresent single-precision and double-precision IEEE 754-format floating-point numbers, respectively. BINARY_FLOATandBINARY_DOUBLEcomputations do not raise exceptions, so you must check the...
1)、FLOAT 2)、DOUBLE 5、Date and Time 1)、DATE 2)、TIME 3)、TIMESTAMP 4)、TIMESTAMP WITH TIME ZONE 5)、TIMESTAMP_LTZ 6)、INTERVAL YEAR TO MONTH 7)、INTERVAL DAY TO SECOND 6、Constructured Data Types 1)、ARRAY 2)、MAP 3)、MULTISET ...