distinct-values() 的結果會接收傳入型別的基底型別,例如 xdt:untypedAtomic 的 xs:string,其原始基數為 。 如果輸入是靜態空白的,則會隱含空白,並引發靜態錯誤。 xs:string 類型的值會與 XQuery 預設 Unicode Codepoint 定序進行比較。 範例 本主題針對 AdventureWorks 資
INSERT INTO Websites (name, url, alexa, country) VALUES ('百度','https://www.baidu.com/','4','CN'); INSERT INTO Websites (name, url, country) VALUES ('stackoverflow', 'http://stackoverflow.com/', 'IND'); 3、修改/更新 update salaries set salary = case when salary >= 10000 t...
This parameter is used for user interaction. This parameter get the distinct value from the custom code function RemoveDuplicates. 1. In theReport Datapanel, right-clickParameters, and then clickAdd Parameters…. 2. In theReport Parameter Propertiesdial...
select--窗口函数用于汇总 dt,sum(1)asexercise_cnt--练习次数,count(distinctif(first_exercise_date=dt,uid,null))asexercise_new_user_nums--练习新用户数,sum(sum(1))over(partition bytrunc(dt,'MM')order by dt)ascume_exercisee_cnt--累积练习次数,sum(sum(1))over(partition bytrunc(dt,'MM')...
The DISTINCT keyword goes right away after the SELECT keyword, and in turn is followed by the column(s) we are selecting the distinct values from. The result of the statement above is this: Color Black Gray Red If we want to get all different years of the cars in our Cars table, we...
The SELECT DISTINCT command returns only distinct (different) values in the result set.The following SQL statement selects only the DISTINCT values from the "Country" column in the "Customers" table:ExampleGet your own SQL Server SELECT DISTINCT Country FROM Customers; Try it Yourself » ...
大纲SELECT [DISTINCT [BY (item {,item2})] ] | [ALL] select-item {,select-item2} 参数 DISTINCT - 可选-...DISTINCT BY (item {,item2}) - 可选-返回按(项)值唯一的行的选择项值。 ALL ...
If you want to get distinct values, why not selecting Distinct ItemID and name?? try that and see if it helps Thursday, July 29, 2010 10:44 AM This is in VB (VS10). Let me know if you need this in C#. Copy Dim q = From doc In source ...
SQL Server中的DISTINCT关键字可以用来消除查询结果中的重复行。该关键字用于SELECT语句中,可以去除SELECT列表中出现的重复行。 代码示例: SELECTDISTINCTcolumn1,column2,...FROMtable_name; 1. 2. 在上述代码中,column1, column2, ...表示需要查询的列,table_name表示目标表名。执行以上代码后,查询结果将会返回...
fn:distinct-values($arg as xdt:anyAtomicType*) as xdt:anyAtomicType* Arguments $arg Sequence of atomic values. Remarks All types of the atomized values that are passed to distinct-values() have to be subtypes of the same base type. Base types that are accepted are the types that suppor...