Transact-SQL 语法约定 语法 syntaxsql ROUND(numeric_expression, length [ ,function ] ) 参数 numeric_expression 是精确数值或近似数值数据类型类别的表达式。 length 它是numeric_expression 的舍入精度。 length 必须是 tinyint、smallint 或 int 类型的表达式 。如果 length 为正数,则将 numeric_expression 舍入...
syntaxsql Copiar ROUND ( numeric_expression , length [ ,function ] ) Nota Para ver la sintaxis de Transact-SQL para SQL Server 2014 (12.x) y versiones anteriores, consulte Versiones anteriores de la documentación.Argumentosnumeric_expression Es una expresión de la categoría de tipo de...
ROUND(numeric_expression, length [ ,function ] ) Not To view Transact-SQL syntax for SQL Server 2014 (12.x) and earlier versions, seePrevious versions documentation. Arguments numeric_expression Is anexpressionof the exact numeric or approximate numeric data type category. ...
程序化SQL DECLARE --为查询设定游标 EXPLAN --为查询描述数据访问计划 OPEN --检索查询结果打开一个游标 FETCH --检索一行查询结果 CLOSE --关闭游标 PREPARE --为动态执行准备SQL 语句 EXECUTE --动态地执行SQL 语句 DESCRIBE --描述准备好的查询 ---局部变量 declare @id char(10) --set @id = '...
Transact-SQL Syntax Conventions Syntax Copy ROUND (numeric_expression , length [ ,function ] ) Arguments numeric_expression Is an expression of the exact numeric or approximate numeric data type category, except for the bit data type. length Is the precision to which numeric_expression is to ...
Transact-SQL syntax conventions Syntax syntaxsql ROUND(numeric_expression, length [ , function ] ) Arguments numeric_expression Anexpressionof the exact numeric or approximate numeric data type category. length The precision to whichnumeric_expressionis to be rounded.lengthmust be an expression of type...
SQL Copy SELECT ROUND(RAND(), 0) AS ZeroOrOne; GO Note In this example, the FLOOR() function always returns 0, whereas the CEILING() function always returns 1. C. Generate random numbers greater than 1 You can scale the range of the random float by multiplying the RAND() function...
Transact-SQL是SQL Server的编程语言,是结构化查询语言(SQL)的增强版本,SQL 是首先由IBM开发的数据库语言。Transact-SQL可用来从数据库中提取数据,执行SQL语言的数据定义(DDL)、数据操作(DML)和数据控制(DCC)等操作。 本节将介绍Transact-SQL的语法规则和语法元素。
SQL USEAdventureWorks2022; GOSELECTROW_NUMBER()OVER(ORDERBYSalesYTDDESC)ASRow, FirstName, LastName,ROUND(SalesYTD,2,1)AS"Sales YTD"FROMSales.vSalesPersonWHERETerritoryNameISNOTNULLANDSalesYTD <>0; 結果集如下所示。 Row FirstName LastName SalesYTD --- --- --- --- 1 Linda Mitchell 4251368....
SQL Copy SELECT DATEADD(month, -(10 / 2), SYSDATETIME()); Specify ranking functions as number This example uses a ranking function as an argument for number. SQL Copy SELECT p.FirstName, p.LastName, DATEADD(day, ROW_NUMBER() OVER (ORDER BY a.PostalCode), SYSDATETIME()) AS 'Row...