在SQL Server 2005中提供了Cross apply使表可以和表值函数(table-valued functions TVF‘s)结果进行join查询。例如,现在我们想通过函数的结果值和表Student进行查询,这时我们可以使用Cross apply进行查询: --- Creates a function to get data from Apply base on sID. CREATE FUNCTION dbo.fn_Apply(@sID int) R...
自定义函数(User-Defined Function)有两种,一种是标量UDF(Scalar-valued Functions)和表值UDF(Table-valued Functions),前者只返回单个数据值,而后者则返回一个表。前面演示了标量自定义函数,javascript:void(0),现在下面两个实例均演示表值自定义函数, 代码 SETANSI_NULLSON GO SETQUOTED_IDENTIFIERON GO CREATEFUN...
Cannot process the query because it references the common language runtime (CLR) table-valued function "yUtl.clr_GetFolderList" with a hint through view "yUtl.v_test". 其实这个是因为视图对象使用了WITH(NOLOCK)的话,就会自动转换为给视图内部对象加上WITH(NOLOCK),那么就会出现上面的错误,如果像存储...
Cannot process the query because it references the common language runtime (CLR) table-valued function "yUtl.clr_GetFolderList" with a hint through view "yUtl.v_test". 其实这个是因为视图对象使用了WITH(NOLOCK)的话,就会自动转换为给视图内部对象加上WITH(NOLOCK),那么就会出现上面的错误,如果像存储...
Applies to: SQL Server A table-valued function is a user-defined function that returns a table. SQL Server extends the functionality of table-valued functions by allowing you to define a table-valued function in any managed language. Data is returned from a table-valued function through an ...
CREATEFUNCTIONGetEmpFirstLastNames()RETURNSTABLE( FirstNameNVARCHAR(4000), LastNameNVARCHAR(4000) )ASEXTERNALNAMEMyDotNETAssembly.[MyNamespace.MyClassname].GetEmpFirstLastNames; 表值函数用于以相关格式表示数据,以便在查询中进一步处理,例如: SQL SELECT*FROMfunc();SELECT*FROMtblINNERJOINfunc()...
For more information, see the section, Use sort order in CLR table-valued functions later in this article. EXTERNAL NAME <method_specifier>assembly_name.class_name.method_name Applies to: SQL Server 2008 (10.0.x) SP 1 and later versions. Specifies the assembly and method to which the ...
表值函数(table-valued function, TVF),顾名思义就是指返回值是一张表的函数,在Oracle、SQL Server等数据库中屡见不鲜。 而在Flink的上一个稳定版本1.13中,社区通过FLIP-145提出了窗口表值函数(window TVF)的实现,用于替代旧版的窗口分组(grouped window)语法。
TableEnvironment tableEnv=StreamTableEnvironment.create(env);// 将数据流转换成表Table eventTable=tableEnv.fromDataStream(eventStream);// 用执行SQL 的方式提取数据Table visitTable=tableEnv.sqlQuery("select url, user from "+eventTable);// 将表转换成数据流,打印输出tableEnv.toDataStream(visitTable)....
SQL Server authentication to manage user identity and prevent unauthorized access. Row-Level Security to limit access to rows in a table based on the relationship between the user and that data. Dynamic Data Masking to limit exposure to personal data by masking it from non-pri...