oracle 過程 調用本身

標籤：

我們在刪除父節點時需要刪除子節點，子節點的子節點也要刪除，這樣就需要迴圈調用該函數，直到沒有子節點的時候。

如下列印出某一節點下的所有子節點

表結構就是一個樹形結構的傳統結構。

CREATE OR REPLACE 
PROCEDURE "DeleteNode" (deleteNodeID IN VARCHAR2)
AS


CURSOR children_cursor IS
SELECT "NodeID" FROM "Organize" WHERE "ParentID" = deleteNodeID;
BEGIN
FOR childIDs IN children_cursor LOOP
--調用本身
declare
BEGIN
SYS."DeleteNode"(childIDs."NodeID");
END;
--調用本身
DBMS_OUTPUT.PUT_LINE(childIDs."NodeID");
delete FROM "Organize" WHERE "NodeID"=childIDs."NodeID";
delete FROM "Node" WHERE "ID"=childIDs."NodeID";
END LOOP;
delete FROM "Organize" WHERE "NodeID"=deleteNodeID;
delete FROM "Node" WHERE "ID"=deleteNodeID;
END;

oracle 過程 調用本身