Value CastedA =newValue(A, i); Value CastedB =newValue(B, i);if(CastedA.Type != ValueType.Integer) CastedA.CastAsInteger();if(CastedB.Type != ValueType.Integer) CastedB.CastAsInteger();returnnewValue((long)((int) CastedA.Integer >> (int) CastedB.Integer)); } 开发者ID:zippy19...
下面是CASTAS的用法及其作用的详细解释。 1.数值类型转换: - CAST(e某pression AS INTEGER/REAL/DOUBLE PRECISION):将e某pression转换为整数、浮点数或双精度浮点数。 - CAST(e某pression AS NUMERIC):将e某pression转换为指定精度和小数位数的数值类型。 - CAST(e某pression AS DECIMAL(p,s)):将e某pression...
Now let us try to cast thestu_idcolumn to integer values from floating point values. This can be done as follows. SELECTCAST(stu_idasUNSIGNED)ascasted_valuesFROMstudent_details; The aforementioned code casts thestu_idcolumn toUNSIGNEDinteger values from thestudent_detailstable. The output of the...
CAST(expression AS SIGNED INTEGER): 将表达式转换为有符号整数。CAST(expression AS UNSIGNED INTEGER):...
新增以下Gauss函数来转换为INTEGER: CREATE OR REPLACE FUNCTION /* This function is used to support "CAST AS INTEGER" of Teradata. It should be created in the "mig_td_ext" schema. */ ( i_param TEXT ) RETURN INTEGER AS v_castasint INTEGER; BEGIN v_castasint := CASE WHEN i_param IS ...
CAST函数的基本语法为:CAST(expression AS target_data_type)。其中,expression是需要转换的数据,target_data_type是目标数据类型。例如,CAST('123' AS INTEGER)将字符串'123'转换为整数123。在不同的数据库系统中,CAST函数的具体实现可能略有不同,但基本原理是一致的。
SELECT CAST(‘123’ AS SIGNED INTEGER);将一个字符串转换为一个小数：SELECT CAST(‘3.14’ AS DECIMAL(5,2));将一个日期字符串转换为一个日期类型：SELECT CAST(‘2022-01-01’ AS DATE);将一个时间字符串转换为一个时间类型：SELECT CAST(’10...
範例11. 從 INTEGER 到 INTERVAL 的 ASTs CAST(1234 AS INTERVAL YEAR); CAST(32, 10 AS INTERVAL YEAR TO MONTH ); CAST(33, 11 AS INTERVAL DAY TO HOUR ); CAST(34, 12 AS INTERVAL HOUR TO MINUTE); CAST(35, 13 AS INTERVAL MINUTE TO SECOND); ...
SELECT DISTINCT AVG(Age) AS AvgAge, CAST(AVG(Age) AS INTEGER) AS IntAvgAge FROM Sample.Person 下面的例子展示了CAST函数如何将pi(一个浮点数)转换为不同的数值数据类型: SELECT CAST({fn PI()} As INTEGER) As IntegerPi, CAST({fn PI()} As SMALLINT) As SmallIntPi, CAST({fn PI()} As...
CAST(3.1e0, 4.2e0, 5.3e0, 6.4e0, 7.5e0, 8.6789012e0 AS GMTTIMESTAMP); CAST(3.2, 4.3, 5.4, 6.5, 7.6, 8.7890135 AS GMTTIMESTAMP); 示例11. 从 INTEGER 到 INTERVAL 的数据类型转换 CAST(1234 AS INTERVAL YEAR); CAST(32, 10 AS INTERVAL YEAR TO MONTH ); ...