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语句表明什么事都不做,这句不能删去,因为PL/SQL体中至少需要有一句; 行5: END关键词表明...
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...
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...
if(@CountryCode='') begin set @sql=@sql if(@Version='') begin set @sql = @sql +' order by id desc' end else begin set @sql = @sql + ' and Version='''+@Version +''' order by id desc' end end else begin set @sql=@sql if(@Version='') begin set @sql=@sql +' and ...
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...
I need to branch my T-SQL stored procedure (MS SQL 2008) control flow to a number of directions: CREATEPROCEDURE[fooBar]@inputParamINTASBEGINIF@inputParam=1BEGIN...ENDELSEIF@inputParam=3BEGIN...ENDELSEIF@inputParam=3BEGIN...ENDEND ...
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...
DELIMITER // CREATE PROCEDURE CheckCondition(IN input INT) BEGIN IF input > 0 THEN SELECT 'Positive'; ELSE SELECT 'Non-positive'; END IF; END // DELIMITER ; 然后,在C#中调用这个存储过程: 代码语言:txt 复制 using MySql.Data.MySqlClient; using System; class Program { static void Main() {...
IF..ELSE..在存储过程的使用规范 IF..ELSE..在存储过程的使用规范 分类：ＳＱＬ存储过程 (@city nvarchar(20),@town nvarchar(20),@village nvarchar(20))asdeclare @num numeric(10)declare @yd_num numeric(10)declare @lt_num numeric(10)declare @gh_num numeric(10)declare @xlt_num numeric(10)...