[英]How to find foreign-key dependencies pointing to one record in Oracle?
[英]how to find partition of record oracle
我有一張桌子,上面有一個分區。
從SUBSCRIBER_01開始有16個哈希分區。
表格名稱:SUBSCRIBER
分區列:CUSTOMER_ID(VARCHAR2 10)
數據庫:11克
如何找到記錄的分區?
像Customer_ID = 933587
選擇該行的rowid,然后DBMS_RowID.RowID_Object()
過程將提取數據對象ID。
http://docs.oracle.com/cd/B19306_01/appdev.102/b14258/d_rowid.htm#i997153
在數據字典中查找該數據對象ID並讀取subobject_name。
例如:
SELECT dbms_rowid.rowid_object(ROWID) data_object_id
FROM INVOICE
WHERE INVOICE_ID = 2268041139:
-- data_object_id = 546512
select * from user_objects where data_object_id = 546512;
-- SUBOBJECT_NAME = 'PART_P2099_P00'
-- OBJECT_TYPE = TABLE PARTITION
-- OBJECT_ID = 464826
-- DATA_OBJECT_ID = 546512
您可以使用以下腳本:
SELECT L.*, O.SUBOBJECT_NAME
FROM
(
SELECT DBMS_ROWID.ROWID_OBJECT(ROWID) DATA_OBJECT_ID, L.*
FROM YOUR_TABLE L
--WHERE L.ID = 123
) L
JOIN
(
SELECT SUBOBJECT_NAME, DATA_OBJECT_ID
FROM USER_OBJECTS
) O ON O.DATA_OBJECT_ID = L.DATA_OBJECT_ID
;
我認為您只能找到cust_id = 123 ...分配的分區名稱:
SELECT partition_name, tablespace_name
FROM user_tab_partitions
WHERE table_name = your_table;
嘗試這個,
select distinct SUBOBJECT_NAME from user_objects where data_object_id = (SELECT distinct dbms_rowid.rowid_object(ROWID) data_object_id FROM <your table name> WHERE <your partition key> = <partition key value>and rownum=1)
我在這里使用哈希分區。
我找到了答案。
DECLARE
pi_partition varchar2(50);
v_sql varchar2(250);
i number;
sy number;
BEGIN
FOR i IN 1..16
LOOP
IF i < 10 THEN
pi_partition:= 'SUBSCRIBER_0'||i;
ELSE
pi_partition:= 'SUBSCRIBER_'||i;
END IF;
sy:=0;
v_sql:= 'select count(*) into :say from subscriber partition('||pi_partition||') where customer_ID='||''''||'933564'||'''';
--dbms_output.put_line(pi_partition);
EXECUTE IMMEDIATE v_sql INTO sa;
IF sy > 0 THEN
DBMS_OUTPUT.PUT_LINE('Result: ' || sy||pi_partition);
EXIT;
END IF;
END LOOP;
END;
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.