SELECT FirstName, LastName, Title FROM Person.Contact WHERE ContactID = ? 在ADO.NET 和 ADO 连接管理器中使用参数 ADO.NET 和 ADO 连接管理器对使用参数的 SQL 命令有特定要求: ADO.NET 连接管理器要求 SQL 命令将参数名称用作参数标记。这意味着变量可以直接映射到参数。例如,变量@varName映射到名为@pa...
SQL Server stored procedures have four mechanisms used to return data:Each SELECT statement in the procedure generates a result set. The procedure can return data through output parameters. A cursor output parameter can pass back a Transact-SQL server cursor. The procedure c...
下列範例會 SqlCommand建立,然後傳遞 Transact-SQL SELECT 語句的字串,以及用來連接到數據源的字串來執行它。 C# 複製 private static void CreateCommand(string queryString, string connectionString) { using (SqlConnection connection = new SqlConnection( connectionString)) { connection.Open(); SqlCommand command...
(255)DECLARE@iErrNumINT/* Check for no Resultsets - needed to get the RETURN value back */IF@R1Num + @R2Num =0SELECTNULL/* Resultset 1 *** */IF@R1Num >0BEGINSETROWCOUNT @R1NumSELECT'Resultset 1'RsNum, TitleFROMPubs..TitlesSETROWCOUNT0END/* Must raise a default error context ...
sp_table_privileges --*返回指定的一个或多个表的表权限(如INSERT、DELETE、UPDATE、SELECT、REFERENCES)的列表。 sp_table_privileges_ex --从指定的链接服务器返回有关指定表的特权信息。 sp_table_validation --返回有关表或索引视图的行数或校验和信息,或者将提供的行数或校验和信息与指定的表或索引视图进行...
SELECT*FROMdbo.Ord; SQL SELECT*FROMdbo.Item; 初步的 Transact-SQL 以下是 Transact-SQL 程式碼清單,可建立記憶體最佳化資料庫物件。 SQL IF EXISTS (SELECT*FROMSYS.OBJECTSWHEREOBJECT_ID=OBJECT_ID('dbo.OrderInsert'))DROPPROCEDUREdbo.OrderInsert; GO IF EXISTS (...
(50), C3 DATETIME); GO CREATE UNIQUE INDEX AK_Index ON #Test (C2) WITH (IGNORE_DUP_KEY = ON); GO INSERT INTO #Test VALUES (N'OC', N'Ounces', GETDATE()); INSERT INTO #Test SELECT * FROM Production.UnitMeasure; GO SELECT COUNT(*) AS [Number of rows] FROM #Test; GO DROP ...
select @custCount = count(*) from CUSTOMER where CUSTOMER.CUSTOMER_ID Like '%' + @custidPattern + '%'RETURN 1The following is the SQL Call Description File for this stored procedure:<?xml version="1.0" encoding="UTF-8"?><definitions> <types> <xs:schema xmlns:xs="http://www.w3.or...
string sqlQuery = @"select c.Name CategoryTitle, pcm.Id MappingId, p.Title PostTitle from Posts_Categories pcm join Categories c on pcm.CategoryId = c.Id join Posts p on pcm.PostId = p.Id where pcm.PostId =@PostId"; var Results = db.Database.SqlQuery<MappingData>(sqlQuery,userSu...
This is the SQL procedure that will be called: create procedure owntbl() dynamic result sets 1 begin declare c1 cursor for select name, dbname from qsys2.systables where creator = system_user ; open c1 ; return ; end This is the program that will process the result sets: ...