decimal(M,D)是一种数据类型,参数M为数字精度,精度就是总的数字位数(小数位和整数位的和),D就是要保留的小数位数。 需要注意:1)参数m<65 是总个数,d<30且 d<m 是小数位。 2)decimal可能的最大取值范围与double 一样,但是其有效的取值范围由M和D 的值决定。如果改变M 而固定D,则其取值范围将随M 的...
selectCAST(FEE/100ASDECIMAL(10,2))asfeefromNET.XXX_TABLE; 结果: 这个时候精度丢了,第一条应该是3.10才对。 再次分析: 这个很容易被忽略:FEE=310,FEE/100这个除法 如果能整除那是没问题的,一旦不能整除,得到的结果只是商,小数部分会被截断,所以就成了3.00 再次修改sql: 那就先将310变成浮点型在做除法然...
In this discussion, the Derby SQL-92 data types are categorized as follows: logical BOOLEAN numeric Exact numeric (SMALLINT, INTEGER, BIGINT, DECIMAL, NUMERIC) Approximate numeric (FLOAT, REAL, DOUBLE PRECISION) string Character string (CLOB, CHAR, VARCHAR, LONG VARCHAR) Bit string (BLO...
create table sample ( id INT(10) ); INSERT INTO sample values (23398), (98743), (54734); Now I want to understand CAST function in mysql. Consider following query : select cast((id/3) as decimal(2,2)) as cast1, cast((id/3) as decimal(3,2)) as cast2, cast((id/3) as...
The example uses the CAST( ) function to convert the results returned from the expression unit_Cost * in_Stock, which have Currency type, as a value with Numeric type with a field width of 8 and a decimal precision of 2.复制 CLEAR ALL OPEN DATABASE HOME(2) + 'Data\Testdata.dbc' ...
CAST(INTERVAL '3456' DAY AS DECIMAL); CAST(INTERVAL '4567' HOUR AS DECIMAL); CAST(INTERVAL '5678' MINUTE AS DECIMAL); CAST(INTERVAL '6789.01' SECOND AS DECIMAL); 範例16. 三元強制轉型失敗並導致替代預設值 CAST(7, 6, 32 AS DATE DEFAULT DATE '1947-10-24'); ...
SQL 复制 > SELECT cast(NULL AS STRING); NULL > SELECT cast(-3Y AS STRING); -3 > SELECT cast(5::DECIMAL(10, 5) AS STRING); 5.00000 > SELECT cast(12345678e-4 AS STRING); 1234.5678 > SELECT cast(1e7 as string); 1.0E7 > SELECT cast(1e6 as string); 1000000.0 > SELECT cast(1...
DECIMAL FLOAT INTEGER Date/Time types: DATE GMTTIME GMTTIMESTAMP INTERVAL TIME TIMESTAMP Boolean: BOOLEAN Ensure that you specify a valid ESQL interval subtype after a Date/Time type of INTERVAL. For valid ESQL interval subtypes, seeESQL INTERVAL data type. For example, commands that show how ...
SQL 複製 SELECT CAST(10.3496847 AS money); 將非數值 Char、Nchar、Nvarchar 或varchar 資料轉換成 decimal、float、int 或numeric 時,SQL Server 會傳回錯誤訊息。 當空字串 (" ") 轉換為 numeric 或decimal 時,SQL Server 也會傳回錯誤。某些日期時間轉換不具決定性字串對日期時間轉換不具決定性的樣式如...
SELECT CAST('12.5' AS decimal(9,2)) decimal数据类型在结果网格中将显示有效小数位: 12.50 (5).精度和小数位数的默认值分别是18与0。如果在decimal类型中不提供这两个值,SQL Server将截断数字的小数部分,而不会产生错误。 SELECT CAST('12.5' AS decimal) ...