update 两个属性的时候怎么写触发器? 触发器sql数据库 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 这是触发器的语法,你可以看联机丛书上的例子:CREATE TRIGGER [ schema_name . ]trigger_name ON { table | view } [ WITH <dml_trigger_option> [ ,...n ] ]{ FOR | AFTER | INSTEAD OF } { [ INSERT ] [ , ] [ UPDATE ] [ , ] [ DELETE ] } [ WITH APPEND ] [ NOT FOR REPLICATION ] AS { sql_statement [ ; ] [ ,...n ] | EXTERNAL NAME <method specifier [ ; ] > }<dml_trigger_option> ::= [ ENCRYPTION ] [ EXECUTE AS Clause ]<method_specifier> ::= assembly_name.class_name.method_nameTrigger on a CREATE, ALTER, DROP, GRANT, DENY, REVOKE, or UPDATE STATISTICS statement (DDL Trigger)CREATE TRIGGER trigger_name ON { ALL SERVER | DATABASE } [ WITH <ddl_trigger_option> [ ,...n ] ]{ FOR | AFTER } { event_type | event_group } [ ,...n ]AS { sql_statement [ ; ] [ ,...n ] | EXTERNAL NAME < method specifier > [ ; ] }<ddl_trigger_option> ::= [ ENCRYPTION ] [ EXECUTE AS Clause ]<method_specifier> ::= assembly_name.class_name.method_nameTrigger on a LOGON event (Logon Trigger)CREATE TRIGGER trigger_name ON ALL SERVER [ WITH <logon_trigger_option> [ ,...n ] ]{ FOR | AFTER } LOGON AS { sql_statement [ ; ] [ ,...n ] | EXTERNAL NAME < method specifier > [ ; ] }<logon_trigger_option> ::= [ ENCRYPTION ] [ EXECUTE AS Clause ]<method_specifier> ::= assembly_name.class_name.method_name 啊我把 update(sclass) 改成 exists(select *from deleted) 就好了! |javamy| 我有一个表字段设置了为不允许为空,但我现在要插入空值,我可以在SQL界面里“允许为空”勾上,但如何用语句来执行 谢谢 主表和附表 ? 求一有效率的存在性查询! 数据库死锁卡机 请问:如果一个查询的字段中含有单引号,该如何查询呢?请高手指教!谢谢! 问一个查询语句/数据库设计的问题! 请教一个触发器权限的问题 如何在做了mirroring的数据上进行事务日志收穷乡僻壤 关于链接服务器,更新表内容时出现错误提示,插入或查询均没问题 触发器的问题 SQL数据库,图片的存储读取用什么方式好? 求条sql语句,进来看看吧
ON { table | view }
[ WITH <dml_trigger_option> [ ,...n ] ]
{ FOR | AFTER | INSTEAD OF }
{ [ INSERT ] [ , ] [ UPDATE ] [ , ] [ DELETE ] }
[ WITH APPEND ]
[ NOT FOR REPLICATION ]
AS { sql_statement [ ; ] [ ,...n ] | EXTERNAL NAME <method specifier [ ; ] > }<dml_trigger_option> ::=
[ ENCRYPTION ]
[ EXECUTE AS Clause ]<method_specifier> ::=
assembly_name.class_name.method_nameTrigger on a CREATE, ALTER, DROP, GRANT, DENY, REVOKE, or UPDATE STATISTICS statement (DDL Trigger)
CREATE TRIGGER trigger_name
ON { ALL SERVER | DATABASE }
[ WITH <ddl_trigger_option> [ ,...n ] ]
{ FOR | AFTER } { event_type | event_group } [ ,...n ]
AS { sql_statement [ ; ] [ ,...n ] | EXTERNAL NAME < method specifier > [ ; ] }<ddl_trigger_option> ::=
[ ENCRYPTION ]
[ EXECUTE AS Clause ]<method_specifier> ::=
assembly_name.class_name.method_nameTrigger on a LOGON event (Logon Trigger)
CREATE TRIGGER trigger_name
ON ALL SERVER
[ WITH <logon_trigger_option> [ ,...n ] ]
{ FOR | AFTER } LOGON
AS { sql_statement [ ; ] [ ,...n ] | EXTERNAL NAME < method specifier > [ ; ] }<logon_trigger_option> ::=
[ ENCRYPTION ]
[ EXECUTE AS Clause ]<method_specifier> ::=
assembly_name.class_name.method_name