今天简单总结一下SQL中PROCEDUR,TRIGGER,FUNCTION的简单应用。 一.简单PROCEDURE 1.不带参数 create proc PROC_Test as select 字段名 from 表名 2.带输入,输出参数 create proc PROC_TESTParamer @ID varchar(16), @username varchar(20) output as select @username = USERNAME FROM 表名 where ID = @ID ...
概述 存储过程(Stored Procedure) 是一组完成特定功能的Transact- SQL语句的集合,即将一些固定的操作集中起来由SQL Server服务器来完成,应用程序只需调用它就可以实现某个特定的任务。 存储过程是可以通过用户、其他存储过程或触发器来调用执行。SQL Serve 201
delimiter ; procedure delimiter // createprocedureup_pro (inin_namevarchar(30),out out_numint) MODIFIES SQL DATA BEGIN SET@count_name = (selectcount(1)fromt1wherename= in_name); INSERTINTOt(name)values(in_name); if@count_name = 0then insertintot1(name,num)values(in_name,1); else s...
SQL triggers are a special type of stored procedure that are executed when a data change takes place on a table. When they are declared, triggers are associated with a specific table and with a SQL data modification operation such as INSERT, UPDATE, or DELETE. Triggers can be implemented ...
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Hi,i take an error when execute dynamic sql in mysql trigger(actually in sql procedure,procedure is called by triiger.) mysql version is:5.7.22 Is there any solutions can resolve the problem? Thanks very much. the code is bellow:
指定したオブジェクトが存在しない場合に失敗するすべてのSQL文 OUTLINE CREATE OUTLINE ALTER OUTLINE DROP OUTLINE PROCEDURE(表の後の「注意」を参照) CREATE FUNCTION CREATE LIBRARY CREATE PACKAGE CREATE PACKAGE BODY CREATE PROCEDURE DROP FUNCTION DROP LIBRARY DROP PACKAGE DROP PROCEDU...
DELETE | UPDATE [OF column [, column …]]}[OR {INSERT | DELETE | UPDATE [OF column [, column …]]}...]ON [schema.]table_name | [schema.]view_name[REFERENCING {OLD [AS] old | NEW [AS] new| PARENT as parent}][FOR EACH ROW ][WHEN condition]PL/SQL_BLOCK | CALL procedure_...
CREATEEVENTTRIGGERnameONevent[WHENfilter_variableIN(filter_value[,...])[AND...]]EXECUTE{FUNCTION|PROCEDURE}function_name() event 表示触发事件,目前仅支持 ddl_command_start、ddl_command_end、table_rewrite 和 sql_drop WHEN filter_variable 用于过滤部分事件,当前仅支持 TAG 变量 ...
CREATE PROCEDURE testCreate (IN viewName VARCHAR(100)) BEGIN Create Trigger insertOrgUsers before Insert on fn.userstemp for each row SET NEW.organization_id = getOrgId() END And I get the error: Error code 1303, SQL state 2F003: Can't create a TRIGGER from within another stored routine...