sql server 存储过程 if else 文心快码BaiduComate 在SQL Server中,存储过程(Stored Procedure)是一组为了完成特定功能的SQL语句集,这些语句集被编译后存储在数据库中。用户可以通过指定存储过程的名字并给出相应的参数(如果存储过程有参数)来执行它。存储过程可以极大地提高数据库操作的效率、安全性和可重用性。 在...
1 CREATE OR REPLACE PROCEDURE 存储过程名 2 IS 3 BEGIN 4 NULL; 5 END; 行1: CREATE OR REPLACE PROCEDURE 是一个SQL语句通知Oracle数据库去创建一个叫做skeleton存储过程, 如果存在就覆盖它; 行2: IS关键词表明后面将跟随一个PL/SQL体。 行3: BEGIN关键词表明PL/SQL体的开始。 行4: NULL PL/SQL语句...
if else 单引号的引用:用到单引号的一律两个单引号代替 USE [a] GO /*** Object: StoredProcedure [a].[Processname] Script Date: 02/24/2011 11:49:55 ***/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO -- === -- Author: <Author,,Name> -- Create date: <Create Date,,> -- ...
SQL Server文档把这种方法称为简单CASE: CASE WHEN <when expression> THEN <result expression> [...n] [ELSE <result expression>] END 第二种方法将提供一个表达式,其中每个WHEN子句的值将为TRUE或者FALSE。相关文档把它称为搜索CASE: CASE WHEN <Boolean expression> THEN <result expression> [...n] [...
An IF...ELSE construct can be used in batches, in stored procedures, and in ad hoc queries. When this construct is used in a stored procedure, it is frequently used to test for the existence of some parameter.IF tests can be nested after another IF or following an ELSE. The limit to...
存储过程(proc 或 procedure) 存储过程(Stored Procedure),计算机用语,是一组为了完成特定功能的SQL语句集,是利用SQL Server所提供的Transact-SQL语言所编写的程序。经编译后存储在数据库中。存储过程是数据库中的一个重要对象,用户通过指定存储过程的名字并给出参数(如果该存储过程带有参数)来执行它。存储过程是由流...
AnIF...ELSEconstruct can be used in batches, in stored procedures, and in ad hoc queries. When this construct is used in a stored procedure, it's usually to test for the existence of some parameter. IFtests can be nested after anotherIFor following anELSE. The limit to the number of...
AnIF...ELSEconstruct can be used in batches, in stored procedures, and in ad hoc queries. When this construct is used in a stored procedure, it's usually to test for the existence of some parameter. IFtests can be nested after anotherIFor following anELSE. The limit to the number of...
IF Boolean_expression { sql_statement | statement_block } [ ELSE { sql_statement | statement_block } ] Not To view Transact-SQL syntax for SQL Server 2014 (12.x) and earlier versions, see Previous versions documentation.ArgumentsBoolean_expression Is an expression that returns TRUE or FALSE....
create procedure 存储过程名 参数 as 功能 --执行 exec 存储过程名 --调用语句为批处理的第一条语句时,可省略exec 1. 2. 3. 4. 5. 6. 7. 8. 9. 示例: 2.不带参数的存储过程:创建一个存储过程,查看所有读者的姓名、可借本数、可借天数和已借书本数。