,"SQL日志表编码为: ",SQLCODE&sql(CREATETRIGGERTrigTestDummyAFTERDELETEONTestDummyLANGUAGEOBJECTSCRIPT{NEWidSETid={ID}&sql(INSERTINTOTestDummyLog(TableName,IDVal,LogDate,Operation)VALUES('TestDummy',:id,+$HOROLOG,:%oper))})w!,"SQL触发器代码为: ",SQLCODE} 以下示例演示了使用SQLINSERT触发器的CR...
### 基础概念 SQL触发器(Trigger)是一种特殊的存储过程,它会在指定的表上执行特定的数据操作(如INSERT、UPDATE、DELETE)时自动触发执行。触发器可以用于实现复杂的业务规则...
CREATE TRIGGER的语法如下: CREATE TRIGGER trigger_name {BEFORE | AFTER} {INSERT | UPDATE | DELETE} ON table_name FOR EACH ROW BEGIN – 触发器执行的SQL语句 END; 其中, trigger_name:触发器的名称。 BEFORE/AFTER:指定触发器是在触发事件之前还是之后执行。 INSERT/UPDATE/DELETE:指定触发器是在插入、更...
否则将导致SQLCODE-99错误,并显示%msg User 'name' does not have required %ALTER privilege needed to create a trigger on table: 'Schema.TableName' 如果拥有适当的授予权限,则可以使用GRANT命令分配%CREATE_TRIGGER和%ALTER权限。
Transact-SQL 语法约定 SQL Server 语法 syntaxsql -- SQL Server Syntax-- Trigger on an INSERT, UPDATE, or DELETE statement to a table or view (DML Trigger)CREATE[ORALTER]TRIGGER[schema_name. ]trigger_nameON{ table | view } [WITH<dml_trigger_option>[ ,...n ] ] {FOR|AFTER|INSTEADOF}...
MySQL create trigger语句 • create trigger语句用来创建一个触发器,触发器的作用是当表上有对应SQL语句发生时,则触发执行 • 触发器创建时需要指定对应的表名tbl_name delimiter//create trigger simple_trigger after update on teacherforeach row begin...
CREATE SERVICE (Transact-SQL) CREATE SPATIAL INDEX (Transact-SQL) CREATE STATISTICS (Transact-SQL) CREATE SYMMETRIC KEY (Transact-SQL) CREATE SYNONYM (Transact-SQL) CREATE TABLE (Transact-SQL) CREATE TRIGGER (Transact-SQL) CREATE TYPE (Transact-SQL) CREATE USER (Transact-SQL) CREATE VIEW (Transa...
FL 500The CREATE TRIGGER (advanced) statement defines an advanced trigger in a schema and builds a trigger package at the current server. Each time that the trigger activates, the trigger package executes one or more times.
Oracle creates the mapping table in the same tablespace as its parent index-organized table. You cannot query, perform DML operations on, or modify the storage characteristics of the mapping table. Restriction on the mapping_table_clause: You cannot specify this clause for a partitioned index-org...
trigger-name 指定触发器的名称。此名称(包括隐式或显式的模式名)不能标识已在目录中描述的触发器 (SQLSTATE 42710)。如果指定了两部分的名称,那么模式名不能以“SYS”开头 (SQLSTATE 42939)。 BEFORE 指定在将主题表的实际更新所引起的任何更改应用于数据库之前执行相关联的触发操作。 AFTER 指定在将主题表的实...