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...
在SQL Server中使用If Else可以通过使用条件语句来实现。条件语句可以根据满足特定条件的情况执行不同的代码块。 下面是在SQL Server中使用If Else的基本语法: ``` I...
set @sql = @sql + ' and Version='''+@Version +''' order by id desc' end end else begin set @sql=@sql if(@Version='') begin set @sql=@sql +' and Area='''+@CountryCode+''' order by id desc' end else begin set @sql=@sql +' and Area='''+@CountryCode+''' and Vers...
IF DATENAME(weekday, GETDATE()) IN (N'Saturday', N'Sunday') SELECT 'Weekend'; ELSE SELECT 'Weekday'; For more examples, see ELSE (IF...ELSE) (Transact-SQL).Examples: Azure Synapse Analytics and Analytics Platform System (PDW)The following example uses IF...ELSE to determine which 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...
else if @town='bbb' begin //sql语句 end else begin //sql语句 end update t_stat_info set…… GO存储过程人门 字号[大中小] 分类:SQL存储过程|标签:beck716.chaokuai.com 课程目标: 一、TRUNCATE 二、Select INTO建表 把一个表中的数据复制到另外一个表中。
if @town='bbb' begin//sql语句endelsebegin//sql语句endupdate t_stat_info set……GO 存储过程人门字号 [大 中 小]分类：ＳＱＬ存储过程 | 标签：beck716.chaokuai.com课程目标:一、TRUNCATE 二、Select INTO 建表 把一个表中的数据复制到另外一个表中。三、Insert INTO Select ...
Unless a statement block is used, the IF or ELSE condition can affect the performance of only one Transact-SQL statement. To define a statement block, use the control-of-flow keywords BEGIN and END. Remarks An IF...ELSE construct can be used in batches, in stored procedures, and in ad...
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's usually to test for the existence of some parameter. IF tests can be nested after another IF or following an ELSE. The limit to the ...
ELSE BEGIN -- 存储过程不存在,不执行任何操作 PRINT '存储过程不存在' END 在上述示例中,我们使用IF EXISTS语句来检查名为"YourStoredProcedure"的存储过程是否存在。如果存在,则打印"存储过程存在"并执行其他操作;如果不存在,则打印"存储过程不存在"。