Function+name: string+parameters: Parameter[]+returnType: Type+body: string+result: string+create()+defineParameters()+writeBody()+returnResult()Parameter+name: string+type: TypeType+name: string 以上类图描述了一个函数(Fu
自定义函数: 递归查出 树下所有节点 ,参数是 父id createfunctionsss(@idasint)returns@ttable( idintnotnull, nameintnotnull, pidintnull)asbegindeclare@layasint; insertinto@tselect*fromtreewherepid =@id;select@lay =min(id)fromtreewherepid =@id; --第一次 @lay=5while@layisnotnullbegininsertin...
CREATEFUNCTIONfunction_name(@parameter_nameparameter_data_type)--CREATE FUNCTION 函数名称(@参数名 参数的数据类型)RETURNStable--返回一个表[WITH ENCRYPTION]--如果指定了 encryption 则函数被加密[AS]RETURN(一条SQL语句) 有了格式,写个实例: CREATEFUNCTIONdbo.func_date_get_table(@date_intovarchar(8))RET...
DROP FUNCTION [IF EXISTS] schema_name.function_name1, schema_name.function_name2, ...; 1. 2. 3. 4. 示例 A)删除普通函数 比如删除udfContacts: DROP FUNCTION IF EXISTS udfContacts; 1. B)删除带有SCHEMABINDING的函数 创建使用WITH SCHEMABINDING选项的函数sales.udf_get_discount_amount: CREATE FUNCTI...
User-defined table-valued functions (TVFs) return a table data type. For an inline table-valued function, there's no function body; the table is the result set of a single SELECT statement. For examples, see Create user-defined functions (database engine). System functions SQL Server provid...
请参阅此 SQL Server 错误代码列表(介于 0 到 999 之间),查找有关 SQL Server 数据库引擎事件的错误消息的说明。
SQL Server Azure SQL Database Azure SQL Managed Instance Creates a user-defined function (UDF), which is a Transact-SQL or common language runtime (CLR) routine. A user-defined function accepts parameters, performs an action such as a complex calculation, and returns the result of that action...
Learn more about the Microsoft.SqlServer.TransactSql.ScriptDom.FunctionReturnType.FunctionReturnType in the Microsoft.SqlServer.TransactSql.ScriptDom namespace.
針對 MSTVF,SQL Server 使用 1 的固定估計作為 MSTVF 預期傳回的資料列數目 (從 SQL Server 2014 (12.x) 開始,其固定估計為 100 個資料列)。 解決步驟 如果MSTVF 僅為單一陳述式,請轉換為內嵌資料表值函式。 SQL 複製 CREATE FUNCTION dbo.tfnGetRecentAddress(@ID int) RETURNS @tblAddress TABLE ([...
usingSystem;usingSystem.Data.Sql;usingMicrosoft.SqlServer.Server;usingSystem.Collections;usingSystem.Data.SqlTypes;usingSystem.Diagnostics;publicclassTabularEventLog{ [SqlFunction(FillRowMethodName ="FillRow")]publicstaticIEnumerableInitMethod(String logname){returnnewEventLog(logname).Entries; }publicstaticvoid...