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[英]Creating a trigger generating ID column value before insert when new tables is created
[英]Creating a trigger to only run when a new table is being created
我知道我可以用它來創建 DDL 創建觸發器;
CREATE OR REPLACE TRIGGER
create_table_trigger
AFTER CREATE ON SCHEMA
DECLARE
BEGIN
END;
問題是這個觸發器會在像“創建序列”這樣的 DDL 上運行; 我怎樣才能只對“創建表”DDL 執行此操作?
CREATE OR REPLACE TRIGGER
create_table_trigger
AFTER CREATE ON SCHEMA
BEGIN
IF SYS.DICTIONARY_OBJ_TYPE = 'TABLE' THEN
....
END;
有關 EVENT 屬性列表,請參閱此頁面
http://ist.marshall.edu/ist480adbp/plsql_triggers.html (鏈接已關閉)
回車機鏈接到上面死鏈接的內容: https : //web.archive.org/web/20110809071133/http : //ist.marshall.edu/ist480adbp/plsql_triggers.html
據我所知,dictionary_obj_type 是 TABLE|SEQUENCE|PROCEDURE|INDEX|FUNCTION|TYPE|PACKAGE 之一
而dictionary_obj_name 只是表/序列/過程/等的名稱。
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