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
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...
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 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"。 对于SQL Server存储过程错误的处理,可以根据具体需求来设计相应...
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...
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...
In this post, we are going to learn how to find out if the table is used in a Stored Procedure. we have multiple ways to do that. This System Stored Procedure will return you list of table/views used by the Stored procedure/View. You can pass the view name or Stored Procedure as ...
在SQL 中,可以使用 CASE 表达式来实现类似于 IF ELSE 的逻辑。CASE 表达式允许你根据条件选择不同的值。在 JOIN 条件中使用 CASE 表达式可以帮助你根据不同的条件来决定如何连接两个表。 基础概念 CASE 表达式在 SQL 中用于条件逻辑,它允许你根据一个或多个条件返回不同的值。基本语法如下: 代码语言:txt 复...
Tables：表Database：数据库Function：函数Trigger：触发器Stored Procedure：存储过程Column：列User：用户Type：类型View：视图Schema：架构示例：删除列示例：ALTER TABLE PERSON DROP COLUMN IF EXISTS NAME。这表明如果PERSON表中存在名为NAME的列，则将其删除；如果不存在，则不执行任何操作且不引发错误。
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 ...