可以使用 DEFAULT 关键字而不是 select-list 表达式将变量设置为其默认值。示例SQL 复制 > DECLARE VARIABLE myvar1 INT DEFAULT 7; > DECLARE VARIABLE myvar2 STRING DEFAULT‘hello’; -- Set a SQL variable to a value > SET VAR myvar1 = 5; > VALUES (myvar1); 5 -- Set a SQL variable...
-- Try to use a function as a parameter value.-- This produces an error message.EXEC dbo.uspGetWhereUsedProductID 819, GETDATE(); 请改用变量将函数值传递给参数,如以下示例所示: SQL -- Passing the function value as a variable.DECLARE@CheckDate datetime;SET@CheckDate =GETDATE(); EXEC dbo...
retcode = SQLAllocHandle(SQL_HANDLE_STMT, hdbc1, &hstmt1); if ( (retcode != SQL_SUCCESS) && (retcode != SQL_SUCCESS_WITH_INFO) ) { printf("SQLAllocHandle(hstmt1) Failed\n\n"); Cleanup(); return(9); } // Set parameters based on total data to se...
ASCII values for extended characters Assign empty string '' if datetime is null Assign EXEC output to Variable Assigning NULL value to column name using Case Statement of where is SQL SERVER 2008 atomic if not exists() and insert or update Attempt to fetch logical page (1:155534) in databas...
(25) OUTPUT';SET@IntVariable =22276;EXECUTEsp_executesql @SQLString, @ParmDefinition, @CustomerID = @IntVariable, @SalesOrderOUT = @SalesOrderNumberOUTPUT;-- This SELECT statement returns the value of the OUTPUT parameter.SELECT@SalesOrderNumber;-- This SELECT statement uses the value of the ...
下面的示例使用 FOR SYSTEM_TIME CONTAINED IN (date_time_literal_or_variable, date_time_literal_or_variable) 参数返回定义期限(从 2013 年 1 月 1 日开始,到 2014 年 1 月 1 日截止,包括上限时间)内的所有开放和关闭的行。 SQL SELECTDepartmentNumber, DepartmentName, ManagerID, ParentDepartmentNumber...
or variable to store data values of different data types. For example, one sql_variant column can hold int, decimal, char, binary, and nchar values. Each instance of a sql_variant column records the data value and the metadata information. This includes the base data type, maximum size, ...
@MyTableVar table( NewScrapReasonID smallint, Name varchar(50), ModifiedDate datetime); INSERT Production.ScrapReason OUTPUT INSERTED.ScrapReasonID, INSERTED.Name, INSERTED.ModifiedDate INTO @MyTableVar VALUES (N'Operator error', GETDATE()); --Display the result set of the table variable. ...
下面是我要做的一个截断的例子: var stuffTOSave = new List<SomeObject> { public int OtherTableId { get; set; } public List<Guid> ComponentIds { get; set; } }; var sql = @"CREATE TABLE Components( ComponentId uniqueidentifier PRIMARY KEY ) INSERT INTO Components VALUES (@WhatGoesHere?
The cursor name is an undeclared identifier, not the name of a PL/SQL variable. You cannot assign values to a cursor name or use it in an expression. However, cursors and variables follow the same scoping rules. Naming cursors after database tables is allowed but not recommended. ...