For example2: Create function函数名(参数) Returns返回值数据类型 [with {Encryption | Schemabinding }] [as] begin SQL语句(必须有return变量或值) End Schemabinding :将函数绑定到它引用的对象上(注:函数一旦绑定,则不能删除、修改,除非删除绑定) Create function AvgResult(@scode varchar(10)) Returns rea...
FUNCTION add_dept(dept_no NUMBER, dept_name VARCHAR2) -- 声明函数 RETURN NUMBER; PROCEDURE query_dept(dept_no IN NUMBER); -- 声明存储过程 END demo_pack; 1. 2. 3. 4. 5. 6. 7. 8. 包主体: -- demo_pack 包主体: CREATE OR REPLACE PACKAGE BODY demo_pack AS -- 创建 add_demp 函...
用户定义函数可使用ALTER FUNCTION修改,使用DROP FUNCTION删除。 Transact-SQL 语法约定 Scalar Functions CREATE FUNCTION [ schema_name. ] function_name ( [ { @parameter_name [ AS ][ type_schema_name. ] parameter_data_type [ = default ] } [ ,...n ] ] ) RETURNS return_data_type [ WITH <...
CREATE FUNCTION [ owner_name.] function_name ( [ { @parameter_name [AS] scalar_parameter_data_type [ = default ] } [ ,...n ] ] ) RETURNS scalar_return_data_type [ WITH < function_option> [ [,] ...n] ] [ AS ] BEGIN function_body RETURN scalar_expression END 1. 2. 3. 4...
Returns nvarchar if the input arguments are of nvarchar data type else returns varchar. Returns NULL if any of the arguments is NULL. Example 1: The following example demonstrates the REPLACE() function. Example: REPLACE() Copy SELECT REPLACE('abcdefghabcdefgh','abcd','***') AS Result1,...
-- Register the function (xp_hello)sp_addextendedproc 'xp_hello', 'c:\xp_hello.dll';-- The following example results in an errorDECLARE@txtVARCHAR(33); EXEC xp_HELLO @txt OUTPUT; 下面是错误消息: 输出 Server: Msg 2812, Level 16, State 62, Line 1 ...
定序名稱可以是 Windows 定序名稱或 SQL 定序名稱。 如需定序的清單和相關詳細資訊,請參閱 Windows 定序名稱 (Transact-SQL) 和SQL Server 定序名稱 (Transact-SQL)。COLLATE子句只能變更 char、varchar、nchar 和nvarchar 數據類型的數據行定序。 COLLATE 無法指定 CLR 資料表值函式。ROWGUIDCOL...
You specify the return code for a procedure using the RETURN. As with output parameters, you must save the return code in a variable when the procedure is executed in order to use the return code value in the calling program. For example, the assignment variable @result of data type int ...
AdventureWorks 产品评论示例应用程序是使用 Microsoft Drivers for PHP for SQL Server的 SQLSRV 驱动程序的 Web 应用程序。 该应用程序可使用户通过输入关键字来搜索产品、查看选定产品的评论、为选定产品撰写评论以及为选定产品上载图像。 运行示例应用程序
For example, processing a query in parallel typically uses more resources than processing it serially, but completes the query faster. The SQL Server Query Optimizer will use a parallel execution plan to return results if the load on the server won't be ...