マテリアライズド・ビューの概要は、『Oracle Database概要』を参照してください。 INSTEAD OF句の詳細は、「CREATE TRIGGER」を参照してください。 FORCEFORCEを指定すると、ビューの実表または参照するオブジェクト型が存在しているか、またはその
TYPE DBMS_XA_XID IS OBJECT( formatid NUMBER, gtrid RAW(64), bqual RAW(64), constructor function DBMS_XA_XID( gtrid IN NUMBER) RETURN SELF AS RESULT, constructor function DBMS_XA_XID ( gtrid IN RAW, bqual IN RAW) RETURN SELF AS RESULT, constructor function DBMS_XA_XID( formatid ...
type numbers is table of number; n numbers := numbers(); begin n.extend; n(1) := 2; n.extend; n(2) := 3; for i in1 .. n.count loop dbms_output.put_line(n(i)); end loop; end; --输出:2,3 而如果加了“index by binary_integer”,代码如下写就可以达到上面的效果 1 2 3...
create table <表名> of <对象类型>意义:此表具有该类型和member方法的所有属性, 我们不能通过DBA STUDIO的表数据编辑器来编辑数据。 例:create table FLIGHT_SCH_TAB of FLIGHT_SCH_TYPE insert into FLIGHT_SCH_TAB values('SL36','AB02','SAN-LOU','5','13:30',3,6); B.访问对象表中的MEMBER方法...
type numbers is table of number;n numbers := numbers();beginn.extend;n(1) := 2;n.extend;n(2) := 3;for i in1 .. n.count loopdbms_output.put_line(n(i));end loop;end;--输出:2,3而如果加了“index by binary_integer”,代码如下写就可以达到上面的效果1...
Unlike the INSERT command, UPDATE and DELETE are supported in a simplified way. Only simple table commands are supported; CONNECT does not support multi-table commands, commands sent from a procedure, or issued via a trigger. These commands are just rephrased to correspond to the data source sy...
Triggers Schakel dit selectievakje in om triggers, inclusief triggercode, op te halen uit de doeldatabase. Controlecomponenten Schakel dit selectievakje in om controlecomponenten, inclusief code van controlecomponenten, op te halen uit de doeldatabase. ...
DBMS error encountered.[09:25:18.613] SQL Stmt: <drop trigger SDE.DB_EV_RENAME_ST_METADATA[09:25:18.613] SQL Stmt: <drop trigger SDE.DB_EV_DROP_ST_METADATA[09:25:18.613] SQL Stmt: <drop trigger SDE.DB_EV_ALTER_ST_METADATA[09:25:18.613] SQL Stmt: <drop t...
As a result, there are overhead in system performance, systemdevelopment, and system maintenance. Another motivation of this research is that the advanced database applications in data streams are looking for DBMSs that can treat triggers and dataequally. This research is to propose a new data...
Before Delete Trigger begin tran does the row level lock or table level lock Begin Transaction with If Condition BEGIN TRANSACTION within TRY - CATCH or vice versa Best practice to handle the paging and performance in SQL Stored procedure Best Practice: Use of semi-colon to terminate statements;...