Largest "最大扩展段(M)",to_char(sysdate,''yyyy-mm-dd hh24:mi:ss'') "采样时间" from (select f.tablespace_name,sum(f.bytes) bytes_alloc,sum(decode(f.autoextensible,''YES'',f.maxbytes,''NO'',f.bytes)) maxbytes from dba_data_files f group by tablespace_name) a,(select f....
FLOOR ( numeric_expression ): This funcion returns the largest integer less than or equal to the specified numeric expression. ROUND ( numeric_expression , length [ ,function ] ):This function returns a numeric value, rounded to the specified length or precision. 上述3个取整函数,是个通用函数,...
找出id为1,3,5的学生1:使用逻辑判断select * from my_student where id=1 || id=3 || id=52:落在集合中in(1,3,5)select * from my_student where id in(1,3,5) 找出身高在180到190之间的学生select * from my_student where height>=180 and height<=190;select * from my_student where bet...
SELECT MAX(Price) AS LargestPrice FROM Products; 4.count SELECT COUNT(column_name) FROM table_name WHERE condition; eg. SELECT COUNT(ProductID) FROM Products; 5.avg SELECT AVG(column_name) FROM table_name WHERE condition; eg. SELECT AVG(Price) FROM Products; 6.sum SELECT SUM(column_name)...
MIN(Select_Item), which determines the smallest value ofSelect_Itemin a column. MAX(Select_Item), which determines the largest value ofSelect_Itemin a column. SUM(Select_Item), which totals a column of numeric data. You cannot nest field functions. ...
FLOORReturns the largest integer value that is <= to a number LOGReturns the natural logarithm of a number, or the logarithm of a number to a specified base LOG10Returns the natural logarithm of a number to base 10 MAXReturns the maximum value in a set of values ...
SELECT x FROM correlated WHERE f1 = 0 AND f2 = 1 OPTION (QUERYTRACEON 4199, QUERYTRACEON 4137); Trace flags The following table lists and describes the trace flags that are available in SQL Server. Azure SQL Managed Instance supports the following global Trace Flags: 460, 2301, 2389,...
LargestOrderPrice 2000 SQL MIN() 函数 MIN() 函数 MIN 函数返回一列中的最小值。NULL 值不包括在计算中。 SQL MIN() 语法 SELECT MIN (column_name) FROM table_name 注释:MIN 和 MAX 也可用于文本列,以获得按字母顺序排列的最高或最低值。 SQL MIN() 实例 我们拥有下面这个 "Orders" 表: O_Id ...
SELECTAVG(column_name)FROMtable_name 1. SQL AVG() 实例 “Orders” 表: 计算“OrderPrice” 字段的平均值,可以使用以下SQL语句: SELECTAVG(OrderPrice)ASOrderAverageFROMOrders 1. 结果集: orderAverage 950 找到OrderPrice 值高于 OrderPrice 平均值的客户,使用如下 SQL 语句: ...
SELECTGREATEST('Glacier', N'Joshua Tree','Mount Rainier')AS GreatestString; GO Here's the result set. Output GreatestString --- Mount Rainier (1 rows affected) C. Return maximum value from a list of column arguments This example returns...