Using hints in MERGE statement

i have a merge statement
in that statement for select clause i am using index hints
can i use it
whether that will increase the performance or the reverse will happen
any comments

Hints should always be your last option. First try tune the sql without using any hints, most of the cases you will be ok. Over time when the table statistics(ex. rows) changes considerably hints may be negative impact.

Similar Messages

Using Delete in Merge Statement

As merge statement inserts and updates the target data related to the source data but what if the target table contains some additional rows. I mean now both the target table and source tables are not the same. How to do it ?

mshamirtaloo wrote:
As merge statement inserts and updates the target data related to the source data but what if the target table contains some additional rows. I mean now both the target table and source tables are not the same. How to do it ?Well, there's nothing to say that the source and target need to be 'the same' so really not sure what you're asking.
As of Oracle 10 the MERGE command allows for insert, update and delete operations.
http://download.oracle.com/docs/cd/E11882_01/server.112/e10592/statements_9016.htm#SQLRF01606

How to use Inner join of table as Source in Merge statement in SQL

Hi All,
I am trying to make source as multiple tables output using Join while coding there is no any syntax error but when i am executing this statement is giving following error
Following is the query
Merge Into EmpDept Target
Using (select E.Address,e.Design,e.EmailId,e.EmpId,e.Ename,e.ManagerId, e.Salary,D.DeptId,D.DeptName,D.Location from Employee E Inner join Dept D on E.DeptId=D.DeptId )As Source (Address,Design,EmailId,EmpId,EName,ManagerId,Salary,DeptId,DeptName,Location)
On Source.EmpId=Target.EmpId
when not matched then
Insert (Target.Address,Target.Design,Target.EmailId,Target.EmpId,Target.Ename,Target.ManagerId, Target.Salary,Target.DeptId,Target.DeptName,Target.Location)
values
(Address,Design,EmailId,EmpId,EName,ManagerId, Salary,DeptId,DeptName,Location)
When matched then
Update set Target.Address = Source.Address ,Target.Design = Source.Design,Target.EmailId = Source.EmailId ,Target.Ename = Source.Ename ,Target.ManagerId = Source.ManagerId , Target.Salary = Source.Salary ,Target.DeptId = Source.DeptId ,Target.DeptName = Source.DeptName ,Target.Location = Source.Location;
This is error while executing the above merge statement
The insert column list used in the MERGE statement cannot contain multi-part identifiers. Use single part identifiers instead.
Please suggest me where i am wrong..
Niraj Sevalkar

MERGE INTO EmpDept Target
Using (SELECT E.Address,
e.Design,
e.EmailId,
e.EmpId,
e.Ename,
e.ManagerId,
e.Salary,
D.DeptId,
D.DeptName,
D.Location
FROM Employee E
INNER JOIN Dept D
ON E.DeptId = D.DeptId) AS Source (Address, Design, EmailId, EmpId, EName, ManagerId, Salary, DeptId, DeptName, Location)
ON Source.EmpId = Target.EmpId
WHEN NOT matched THEN
INSERT (Address,
Design,
EmailId,
EmpId,
Ename,
ManagerId,
Salary,
DeptId,
DeptName,
Location)
VALUES (Address,
Design,
EmailId,
EmpId,
EName,
ManagerId,
Salary,
DeptId,
DeptName,
Location)
WHEN matched THEN
UPDATE SET Address = Source.Address,
Design = Source.Design,
EmailId = Source.EmailId,
Ename = Source.Ename,
ManagerId = Source.ManagerId,
Salary = Source.Salary,
DeptId = Source.DeptId,
DeptName = Source.DeptName,
Location = Source.Location;

Automatic Parallelism causes Merge statement to take longer.

We have a problem in a new project as part of the ETL load into the Oracle datawarehouse we perform a merge statement to update rows in a global temporary table then load
the results into a permanant table, when testing with automatic parallel execution enabled the plan changes and the merge never finishes and consumes vast amounts of resources.
The database version is:-
Database version :11.2.0.3
OS: redhat 64bit
three node rac 20 cores per node
when executing serially the query response is typically similar to the following:
MERGE /*+ gather_plan_statistics no_parallel */ INTO T_GTTCHARGEVALUES USING
(SELECT
CASTACCOUNTID,
CHARGESCHEME,
MAX(CUMULATIVEVALUE) AS MAXMONTHVALUE,
MAX(CUMULATIVECOUNT) AS MAXMONTHCOUNT
FROM
V_CACHARGESALL
WHERE
CHARGEDATE >= TRUNC(TO_DATE(:B1,'YYYY-MM-DD'),'MM')
AND CHARGEDATE < TO_DATE(:B1,'YYYY-MM-DD')
GROUP BY
   CASTACCOUNTID,
   CHARGESCHEME
HAVING MAX(CUMULATIVECOUNT) IS NOT NULL ) MTOTAL
ON
(T_GTTCHARGEVALUES.CASTACCOUNTID=MTOTAL.CASTACCOUNTID AND
T_GTTCHARGEVALUES.CHARGESCHEME=MTOTAL.CHARGESCHEME)
WHEN MATCHED
THEN UPDATE SET
CUMULATIVEVALUE=CUMULATIVEVALUE+MTOTAL.MAXMONTHVALUE ,
CUMULATIVECOUNT=CUMULATIVECOUNT+MTOTAL.MAXMONTHCOUNT;
1448340 rows merged.
select * from table(dbms_xplan.display_cursor(null,null,'ALLSTATS LAST'));
| Id | Operation                       | Name              | Starts | E-Rows | A-Rows |   A-Time   | Buffers | Reads | OMem | 1Mem | Used-Mem |
|   0 | MERGE STATEMENT                 |                   |      1 |        |      0 |00:03:08.43 |    2095K|    186K|       |       |          |
|   1 | MERGE                          | T_GTTCHARGEVALUES |      1 |        |      0 |00:03:08.43 |    2095K|    186K|       |       |          |
|   2 |   VIEW                          |                   |      1 |        |   1448K|00:02:53.14 |     619K|    177K|       |       |          |
|* 3 |    HASH JOIN                    |                   |      1 |      1 |   1448K|00:02:52.70 |     619K|    177K|   812K|   812K| 1218K (0)|
|   4 |     VIEW                        |                   |      1 |      1 |    203 |00:02:51.26 |     608K|    177K|       |       |          |
|* 5 |      FILTER                     |                   |      1 |        |    203 |00:02:51.26 |     608K|    177K|       |       |          |
|   6 |       SORT GROUP BY             |                   |      1 |      1 |    480 |00:02:51.26 |     608K|    177K| 73728 | 73728 |          |
|* 7 |        FILTER                   |                   |      1 |        |     21M|00:02:56.04 |     608K|    177K|       |       |          |
|   8 |         PARTITION RANGE ITERATOR|                   |      1 |    392K|     21M|00:02:51.32 |     608K|    177K|       |       |          |
|* 9 |          TABLE ACCESS FULL      | T_CACHARGES       |     24 |    392K|     21M|00:02:47.48 |     608K|    177K|       |       |          |
| 10 |     TABLE ACCESS FULL           | T_GTTCHARGEVALUES |      1 |   1451K|   1451K|00:00:00.48 |   10980 |      0 |       |       |          |
Predicate Information (identified by operation id):
   3 - access("T_GTTCHARGEVALUES"."CASTACCOUNTID"="MTOTAL"."CASTACCOUNTID" AND "T_GTTCHARGEVALUES"."CHARGESCHEME"="MTOTAL"."CHARGESCHEME")
   5 - filter(MAX("CUMULATIVECOUNT") IS NOT NULL)
   7 - filter(TRUNC(TO_DATE(:B1,'YYYY-MM-DD'),'fmmm')<TO_DATE(:B1,'YYYY-MM-DD'))
   9 - filter(("LOGICALLYDELETED"=0 AND "CHARGEDATE">=TRUNC(TO_DATE(:B1,'YYYY-MM-DD'),'fmmm') AND "CHARGEDATE"<TO_DATE(:B1,'YYYY-MM-DD')))removing the no_parallel hint results in the following, (this is pulled from the sql monitoring report and editied to remove the lines relating to individual parallel servers)
I understand that the query is considered for parallel execution due to the estimated length of time it will run for and although the degree of parallleism seems excessive
it is the default maximum for the server configuration, what we are tryig to understand is which statistics could be inacurate or missing and could cause this kind of problem.
In this case we can add the no_parallel hint in the etl package as a workaround but would really liek to identify the root cause to avoid similar problems elsewhere.
SQL Monitoring Report
SQL Text
MERGE INTO T_GTTCHARGEVALUES USING (SELECT CASTACCOUNTID, CHARGESCHEME, MAX(CUMULATIVEVALUE) AS MAXMONTHVALUE,
MAX(CUMULATIVECOUNT) AS MAXMONTHCOUNT FROM V_CACHARGESALL WHERE CHARGEDATE >= TRUNC(TO_DATE(:B1,'YYYY-MM-DD'),'MM')
AND CHARGEDATE < to_date(:B1,'YYYY-MM-DD')
GROUP BY CASTACCOUNTID, CHARGESCHEME HAVING MAX(CUMULATIVECOUNT) IS NOT NULL ) MTOTAL
ON (T_GTTCHARGEVALUES.CASTACCOUNTID=MTOTAL.CASTACCOUNTID AND
T_GTTCHARGEVALUES.CHARGESCHEME=MTOTAL.CHARGESCHEME) WHEN MATCHED THEN UPDATE SET
CUMULATIVEVALUE=CUMULATIVEVALUE+MTOTAL.MAXMONTHVALUE ,
CUMULATIVECOUNT=CUMULATIVECOUNT+MTOTAL.MAXMONTHCOUNT
Error: ORA-1013
ORA-01013: user requested cancel of current operation
Global Information
Status              : DONE (ERROR)
Instance ID         : 1
Session             : XXXX(2815:12369)
SQL ID              : 70kzttjbyyspt
SQL Execution ID    : 16777216
Execution Started   : 04/27/2012 09:43:27
First Refresh Time : 04/27/2012 09:43:27
Last Refresh Time   : 04/27/2012 09:48:43
Duration            : 316s
Module/Action       : SQL*Plus/-
Service             : SYS$USERS
Program             : sqlplus@XXXX (TNS V1-V3)
Binds
========================================================================================================================
| Name | Position |     Type     |                                        Value                                        |
========================================================================================================================
| :B1 |        1 | VARCHAR2(32) | 2012-04-25                                                                          |
========================================================================================================================
Global Stats
====================================================================================================================
| Elapsed | Queuing |   Cpu   |    IO    | Application | Concurrency | Cluster | Other   | Buffer | Read | Read |
| Time(s) | Time(s) | Time(s) | Waits(s) | Waits(s)   | Waits(s)   | Waits(s) | Waits(s) | Gets | Reqs | Bytes |
====================================================================================================================
|    7555 |    0.00 |    4290 |     2812 |        0.08 |          27 |      183 |      243 |     3M | 294K |   7GB |
====================================================================================================================
SQL Plan Monitoring Details (Plan Hash Value=323941584)
==========================================================================================================================================================================================================
| Id |             Operation             |       Name        | Rows   | Cost |   Time    | Start | Execs |   Rows   | Read | Read | Mem | Activity |                Activity Detail                |
|    |                                   |                   | (Estim) |       | Active(s) | Active |       | (Actual) | Reqs | Bytes | (Max) |   (%)    |                  (# samples)                  |
==========================================================================================================================================================================================================
| 0 | MERGE STATEMENT                   |                   |         |       |           |        |     1 |          |      |       |       |          |                                               |
| 1 |   MERGE                           | T_GTTCHARGEVALUES |         |       |           |        |     1 |          |      |       |       |          |                                               |
| 2 |    PX COORDINATOR                 |                   |         |       |        57 |     +1 |   481 |        0 | 317 |   5MB |       |     4.05 | latch: shared pool (40)                       |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | os thread startup (17)                        |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | Cpu (7)                                       |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | DFS lock handle (36)                          |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | SGA: allocation forcing component growth (14) |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | latch: parallel query alloc buffer (200)      |
| 3 |     PX SEND QC (RANDOM)           | :TQ10003          |       1 | 19054 |           |        |       |          |      |       |       |          |                                               |
| 4 |      VIEW                         |                   |         |       |           |        |       |          |      |       |       |          |                                               |
| 5 |       FILTER                      |                   |         |       |           |        |       |          |      |       |       |          |                                               |
| 6 |        SORT GROUP BY              |                   |       1 | 19054 |           |        |       |          |      |       |       |          |                                               |
| 7 |         PX RECEIVE                |                   |       1 | 19054 |           |        |       |          |      |       |       |          |                                               |
| 8 |          PX SEND HASH             | :TQ10002          |       1 | 19054 |           |        |   240 |          |      |       |       |          |                                               |
| 9 |           SORT GROUP BY           |                   |       1 | 19054 |       246 |    +70 |   240 |        0 |      |       | 228M |    49.32 | Cpu (3821)                                    |
| 10 |            FILTER                 |                   |         |       |       245 |    +71 |   240 |       3G |      |       |       |     0.08 | Cpu (6)                                       |
| 11 |             HASH JOIN             |                   |       1 | 19054 |       259 |    +57 |   240 |       3G |      |       | 276M |     4.31 | Cpu (334)                                     |
| 12 |              PX RECEIVE           |                   |      1M |     5 |       259 |    +57 |   240 |       1M |      |       |       |     0.04 | Cpu (3)                                       |
| 13 |               PX SEND HASH        | :TQ10000          |      1M |     5 |         6 |    +56 |   240 |       1M |      |       |       |     0.01 | Cpu (1)                                       |
| 14 |                PX BLOCK ITERATOR |                   |      1M |     5 |         6 |    +56 |   240 |       1M |      |       |       |     0.03 | Cpu (1)                                       |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | PX Deq: reap credit (1)                       |
| 15 |                 TABLE ACCESS FULL | T_GTTCHARGEVALUES |      1M |     5 |         7 |    +55 | 5486 |       1M | 5487 | 86MB |       |     2.31 | gc cr grant 2-way (3)                         |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | gc current block lost (7)                     |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | Cpu (7)                                       |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | db file sequential read (162)                 |
| 16 |              PX RECEIVE           |                   |     78M | 19047 |       255 |    +61 |   240 |     801K |      |       |       |     0.03 | IPC send completion sync (2)                  |
| 17 |               PX SEND HASH        | :TQ10001          |     78M | 19047 |       250 |    +66 |   240 |       3M |      |       |       |     0.06 | Cpu (5)                                       |
| 18 |                PX BLOCK ITERATOR |                   |     78M | 19047 |       250 |    +66 |   240 |       4M |      |       |       |          |                                               |
| 19 |                 TABLE ACCESS FULL | T_CACHARGES       |     78M | 19047 |       254 |    +62 | 1016 |       4M | 288K |   6GB |       |    37.69 | gc buffer busy acquire (104)                  |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | gc cr block 2-way (1)                         |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | gc cr block lost (9)                          |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | gc cr grant 2-way (14)                        |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | gc cr multi block request (1)                 |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | gc current block 2-way (3)                    |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | gc current block 3-way (2)                    |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | gc current block busy (1)                     |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | gc current grant busy (2)                     |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | Cpu (58)                                      |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | latch: gc element (1)                         |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | db file parallel read (26)                    |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | db file scattered read (207)                  |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | db file sequential read (2433)                |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | direct path read (1)                          |
|    |                                   |                   |         |       |           |        |       |          |      |       |       |          | read by other session (57)                    |
==========================================================================================================================================================================================================
Parallel Execution Details (DOP=240 , Servers Allocated=480)
Instances : 3

chris_c wrote:
| Id | Operation                       | Name              | Starts | E-Rows | A-Rows |   A-Time   | Buffers | Reads | OMem | 1Mem | Used-Mem |
|* 9 |          TABLE ACCESS FULL      | T_CACHARGES       |     24 |    392K|     21M|00:02:47.48 |     608K|    177K|       |       |          |
Based on the discrepancy between the estimated number of rows and the actual, and the below posted bind value of 2012-04-25 i'd first be checking if the statistics on T_CACHARGES are up to date.
As a reference
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:4399338600346902127
So that would be my first avenue of exploration.
Cheers,

The new MERGE statement in Oracle 9i

Has anyone used the new Merge statement to process large amounts of data? Currently we use PL/SQL to update/insert into our tables when we are loading large amounts of data (close to one million rows) because we can set commit points and avoid rollback problems. I am wondering if we use Merge instead how this will affect rollback? Are we still going to have to code for this problem?
Thanks in advance!

Thanks for the suggestions. Our problem is that the base table contains 50 million rows and seven indexes, and each month we try to insert/update one million rows. Some of the data in the base table is historical so if we implemented your solution we would lose any records not being updated.
What I am really trying to determine is if the MERGE statement has any redo log ramifications. Will we run in rollback space problems if we implement it instead of running PL/SQL in the following format:
FOR cur_rec in c1 LOOP
UPDATE table a
SET col a = cur_rec.col a, ...
WHERE ...
IF SQL%NOTFOUND THEN
INSERT (col a , col b, col c...)
VALUES (cur_rec.col a, cur_rec.col b...);
END IF;
We commit every 10,000 records (as determined by SQL%ROWCOUNT). This can be time comsuming and Oracle claims that the new MERGE command will avoid costly overhead and reduce data scans. However, I am concerned that we may hit rollback problems if we implement a straight SQL statement such as MERGE. Any thoughts?

Issue with Oracle Merge statements (PL/SQL: ORA-00913: too many values)

Hi All,
I am using the below merge statement and I am getting too many rows issues when I am compiling.
BEGIN
FOR te_rec IN ( SELECT /*+ parallel(ts,4) */ te.dtv_acct_num FROM telcos_eligible te, telcos_setup ts, telcos_partners tp
WHERE tp.telcos_name = UPPER((p_telcos_name))
AND ts.partner_id = tp.partner_id
AND te.ts_id = ts.ts_id ) LOOP
MERGE INTO tcs_accounts
USING (
SELECT /*+ DRIVING_SITE(a) */account_id, a.subscriber_id, status, account_type FROM account@tcs_to_paris a WHERE a.subscriber_id = te_rec.dtv_acct_num
) paris_accounts
ON (tcs_accounts.subscriber_id = paris_accounts.subscriber_id)
WHEN MATCHED THEN
UPDATE SET
account_type = paris_accounts.account_type,
subscriber_id = paris_acounts.subscriber_id,
status = paris_accounts.status
WHEN NOT MATCHED THEN
INSERT(account_id, subscriber_id, status_account_type)
VALUES(paris_accounts.account_id, paris_accounts.subscriber_id, paris_accounts.status, paris_accounts.account_type);
END LOOP;
END;
Can you let me know what is the issue here.
Thanks,
MK.

Hi,
Maddy wrote:
... WHEN NOT MATCHED THEN
INSERT(account_id, subscriber_id, status_account_type)
VALUES(paris_accounts.account_id, paris_accounts.subscriber_id, paris_accounts.status, paris_accounts.account_type);This is one of the many times when a little formatting can really help you. Anybody can forget a column (or have an extra one, or type a _ when they mean ,) but if you write code like this
INSERT ( account_id, subscriber_id, status_account_type)
VALUES (paris_accounts.account_id, paris_accounts.subscriber_id, paris_accounts.status, paris_accounts.account_type);you might spot the error yourself.
Always format your code. When you post any formatted text on thsi site, type these 6 characters:
\(small letters only, inside curly brackets) before and after formatted text, to preserve spacing.

Two parallel hints in a merge statement

I am not sure if using the parallel hint in such a way as below would be helpful in parallelizing the query run. Can a parallel hint be used for two different tables in a merge statement like mentioned below?
MERGE INTO /*+ parallel (TABLE_A,8) */ TABLE_A A
USING( SELECT /*+ parallel (TABLE_B,8) */
                        col1,
                        col2
              FROM TABLE_B
         ) B
ON A.col1 = B.col1
WHEN MATCHED THEN
UPATE ....
WHEN NOT MATCHED THEN
INSERT ...
I am using Oracle 10g.
Thanks

This does make sense (allowing for "someone else"'s observation about aliases); however MERGE is DML, so you couldn't get the merge phase working in parallel if you didn't also execute
alter session enable parallel dml;
Regards
Jonathan Lewis

Issue while using SUBPARTITION clause in the MERGE statement in PLSQL Code

Hello All,
I am using the below code to update specific sub-partition data using oracle merge statements.
I am getting the sub-partition name and passing this as a string to the sub-partition clause.
The Merge statement is failing stating that the specified sub-partition does not exist. But the sub-partition do exists for the table.
We are using Oracle 11gr2 database.
Below is the code which I am using to populate the data.
declare
ln_min_batchkey PLS_INTEGER;
ln_max_batchkey PLS_INTEGER;
lv_partition_name VARCHAR2 (32767);
lv_subpartition_name VARCHAR2 (32767);
begin
FOR m1 IN ( SELECT (year_val + 1) AS year_val, year_val AS orig_year_val
FROM ( SELECT DISTINCT
TO_CHAR (batch_create_dt, 'YYYY') year_val
FROM stores_comm_mob_sub_temp
ORDER BY 1)
ORDER BY year_val)
LOOP
lv_partition_name :=
scmsa_handset_mobility_data_build.fn_get_partition_name (
p_table_name => 'STORES_COMM_MOB_SUB_INFO',
p_search_string => m1.year_val);
FOR m2
IN (SELECT DISTINCT
'M' || TO_CHAR (batch_create_dt, 'MM') AS month_val
FROM stores_comm_mob_sub_temp
WHERE TO_CHAR (batch_create_dt, 'YYYY') = m1.orig_year_val)
LOOP
lv_subpartition_name :=
scmsa_handset_mobility_data_build.fn_get_subpartition_name (
p_table_name => 'STORES_COMM_MOB_SUB_INFO',
p_partition_name => lv_partition_name,
p_search_string => m2.month_val);
                    DBMS_OUTPUT.PUT_LINE('The lv_subpartition_name => '||lv_subpartition_name||' and lv_partition_name=> '||lv_partition_name);
IF lv_subpartition_name IS NULL
THEN
                         DBMS_OUTPUT.PUT_LINE('INSIDE IF => '||m2.month_val);
INSERT INTO STORES_COMM_MOB_SUB_INFO T1 (
t1.ntlogin,
t1.first_name,
t1.last_name,
t1.job_title,
t1.store_id,
t1.batch_create_dt)
SELECT t2.ntlogin,
t2.first_name,
t2.last_name,
t2.job_title,
t2.store_id,
t2.batch_create_dt
FROM stores_comm_mob_sub_temp t2
WHERE TO_CHAR (batch_create_dt, 'YYYY') = m1.orig_year_val
AND 'M' || TO_CHAR (batch_create_dt, 'MM') =
m2.month_val;
ELSIF lv_subpartition_name IS NOT NULL
THEN
                    DBMS_OUTPUT.PUT_LINE('INSIDE ELSIF => '||m2.month_val);
MERGE INTO (SELECT *
FROM stores_comm_mob_sub_info
SUBPARTITION (lv_subpartition_name)) T1 --> Issue Here
USING (SELECT *
FROM stores_comm_mob_sub_temp
WHERE TO_CHAR (batch_create_dt, 'YYYY') =
m1.orig_year_val
AND 'M' || TO_CHAR (batch_create_dt, 'MM') =
m2.month_val) T2
ON (T1.store_id = T2.store_id
AND T1.ntlogin = T2.ntlogin)
WHEN MATCHED
THEN
UPDATE SET
t1.postpaid_totalqty =
(NVL (t1.postpaid_totalqty, 0)
+ NVL (t2.postpaid_totalqty, 0)),
t1.sales_transaction_dt =
GREATEST (
NVL (t1.sales_transaction_dt,
t2.sales_transaction_dt),
NVL (t2.sales_transaction_dt,
t1.sales_transaction_dt)),
t1.batch_create_dt =
GREATEST (
NVL (t1.batch_create_dt, t2.batch_create_dt),
NVL (t2.batch_create_dt, t1.batch_create_dt))
WHEN NOT MATCHED
THEN
INSERT (t1.ntlogin,
t1.first_name,
t1.last_name,
t1.job_title,
t1.store_id,
t1.batch_create_dt)
VALUES (t2.ntlogin,
t2.first_name,
t2.last_name,
t2.job_title,
t2.store_id,
t2.batch_create_dt);
END IF;
END LOOP;
END LOOP;
COMMIT;
end;
Much appreciate your inputs here.
Thanks,
MK.
(SORRY TO POST THE SAME QUESTION TWICE).
Edited by: Maddy on May 23, 2013 10:20 PM

Duplicate question

Error while using Merge statement

Hi,
Can any one please look at the merge statement and help me understand the error.Thanks in advance.
MERGE /*+ APPEND */
INTO intf_lpa_master m
USING (SELECT std_district_student_id,
std_grade_code,
sub_test,
test_date,
performance_lvl_code,
test_lang_code,
v_student_id,
v_test_id,
v_lang_cd,
v_plc,
valid_test_date,
-- school_year,
-- school_id,
valid_src_stu_id,
test_code
FROM intf_lpa_master_vw
MINUS
SELECT std_district_student_id,
std_grade_code,
sub_test,
test_date,
performance_lvl_code,
test_lang_code,
v_student_id,
v_test_id,
v_lang_cd,
v_plc,
valid_test_date,
-- school_yr,
-- school_id,
valid_src_stu_id,
test_code
FROM intf_lpa_master
WHERE active_flag = 'Y') v
ON ( m.std_district_student_id = v.std_district_student_id
AND m.sub_test = v.sub_test
AND m.test_date = v.test_date)
WHEN MATCHED
THEN
UPDATE SET m.std_grade_code = v.std_grade_code,
m.performance_lvl_code = v.performance_lvl_code,
m.test_lang_code = v.test_lang_code,
m.active_flag = 'Y', -- if we are touching this record, it is to be active.
m.error_message = NULL, -- refresh these, to properly reconsider records.
m.create_date = SYSDATE,
m.record_id = intf_lpa_master_seq.NEXTVAL,
m.process_row = 'U',
m.last_update_date = SYSDATE,
m.last_update_user = 'PRE_PROCESS_LPA - UPDATE',
-- m.job_id = c_run_id ,
m.validation_step = NULL, -- refresh these, to properly reconsider records.
m.v_student_id = v.v_student_id,
m.v_test_id = v.v_test_id,
m.v_lang_cd = v.v_lang_cd,
m.v_plc = v.v_plc,
m.valid_test_date = v.valid_test_date,
-- m.school_year = v.schloo_year,
-- m.school_id = v.school_id,
m.valid_src_stu_id = v.valid_src_stu_id,
m.test_code = v.test_code
WHEN NOT MATCHED
THEN
INSERT (
m.std_district_student_id,
m.std_grade_code,
m.sub_test,
m.test_date,
m.performance_lvl_code,
m.test_lang_code,
m.active_flag,
m.error_message,
m.create_date,
m.record_id,
m.process_row,
m.last_update_date,
m.last_update_user,
-- m.job_id,
m.validation_step,
m.v_student_id,
m.v_test_id,
m.v_lang_cd,
m.v_plc,
m.valid_test_date,
-- m. school_year,
-- m. school_id,
m.valid_src_stu_id,
m.test_code)
VALUES (
v.std_district_student_id,
v.std_grade_code,
v.sub_test,
v.test_date,
v.performance_lvl_code,
v.test_lang_code,
'Y',
NULL,
SYSDATE,
intf_lpa_master_seq.NEXTVAL,
'I',
SYSDATE,
'PRE_PROCESS_LPA - INSERT',
-- c_run_id,
NULL,
v.v_student_id,
v.v_test_id,
v.v_lang_cd,
v.v_plc,
v.valid_test_date,
-- v. school_year,
-- v. school_id,
v.valid_src_stut_id,
v.test_code);
Error Message :
ORA-06553 : PLS-306:wrong number or types of arguments in call to 'V'

There are a couple of thngs wrong here. In the when matched insert column list, you cannot qualify the field name with the table alias. It should be just:
insert (std_district_student_id, std_grade_code, sub_test ...)Are v_student_id, v_test_id, v_lang_cd, and v_plc really columns in the intf_lpa_master table? I am more used to seeing v_name as a variable naming convention than a column name, but I could be wrong.
John

Error in merge statement when trying to impliment SCD type 2 using merge...

Hi ,
I'm trying to impliment SCD type 2 using Merge using below blog as reference but sime how it is erroring out with error
http://www.made2mentor.com/2013/08/how-to-load-slowly-changing-dimensions-using-t-sql-merge/
Msg 207, Level 16, State 1, Line 40
Invalid column name 'Current'.
Msg 207, Level 16, State 1, Line 38
Invalid column name 'Current'.
Msg 207, Level 16, State 1, Line 47
Invalid column name 'Current'.
Here is the code below...
--Create Temporaty table to hold dimension records
IF OBJECT_ID('tempdb..#DimVirtualQueue') IS NOT NULL
DROP TABLE #DimVirtualQueue;
CREATE TABLE #DimVirtualQueue
( [VQ_name] [varchar](50) NULL,
[contact_type] [varchar](50) NULL,
[center_node_id] [int] NULL,
[sed_id] [datetime] NULL,
[eed_id] [datetime] NULL,
[insert_date] [datetime] NULL,
[Current] [char](1) NOT NULL
INSERT INTO #DimVirtualQueue(VQ_name, contact_type, center_node_id, sed_id, eed_id, insert_date,[Current] )
SELECT VQ_name, contact_type, center_node_id, sed_id , eed_id,GETDATE(),'Y'
FROM
( --Declare Source and Target tables.
MERGE dbo.tblSwDM_dim_VQ_test AS TARGET
--Source
USING (SELECT
RTRIM(LTRIM(Stage.RESOURCE_NAME)) AS VQ_name,
'Unknown' AS contact_type,
0 AS center_node_id,
CONVERT(INT,CONVERT(VARCHAR(8),GMT_START_TIME,112)) AS sed_id,
CONVERT(INT,CONVERT(VARCHAR(8),ISNULL(GMT_END_TIME,'2070-01-01'),112)) AS eed_id,
GETDATE() AS insert_date
FROM dbo.tblGenesys_stg_RESOURCE_ Stage
WHERE resource_type = 'queue'
AND resource_subtype = 'VirtualQueue'
AND NOT EXISTS (SELECT 1 FROM dbo.tblSwDM_dim_VQ AS dim
WHERE RTRIM(LTRIM(stage.RESOURCE_NAME)) = RTRIM(LTRIM(dim.vq_name))) ) SOURCE
ON TARGET.VQ_name = SOURCE.VQ_name
WHEN NOT MATCHED BY TARGET
THEN
INSERT ( VQ_name, contact_type, center_node_id, sed_id, eed_id, insert_date,[Current] )
VALUES (SOURCE.VQ_name,SOURCE.contact_type,SOURCE.center_node_id,SOURCE.sed_id,SOURCE.eed_id,SOURCE.insert_date,'Y')
WHEN MATCHED AND TARGET.[Current] = 'Y'
AND EXISTS (
SELECT SOURCE.VQ_name
EXCEPT
SELECT TARGET.VQ_name
--Expire the records in target if exist in source.
THEN UPDATE SET TARGET.[Current] = 'N',
TARGET.[eed_id] = SOURCE.eed_id
OUTPUT $Action ActionOut, SOURCE.VQ_name,SOURCE.contact_type,SOURCE.center_node_id,SOURCE.sed_id,SOURCE.eed_id) AS MergeOut
WHERE MergeOut.ActionOut = 'UPDATE';
--Insert data into dimension
INSERT tblSwDM_dim_VQ_test
SELECT VQ_name,contact_type,center_node_id,sed_id,eed_id,insert_date,[Current] FROM #DimVirtualQueue
Any help to resolve issue is appreciated...
Thanks,
Vishal..

You need to show the DDL of your target table: dbo.tblSwDM_dim_VQ_test.
Do you have a column named [Current] in this table?

Problem using TAPI triggers and merge statement

Hi,
I use Designer tapi triggers on a table. When I try to execute a merge statement, I get the following error:
ORA-06502: PL/SQL: numeric or value error: NULL index table key value.
Is there a restriction when using TAPI triggers and merge statements that anyone is aware of?

No restrictions on MERGE commands that I know of. I have, however, seen the TAPI give inexplicable ORA-06502 errors. It would help to know what line in which procedure or trigger gave the error. That information should have been in the error stack.

Can sql merge statement be used in a batch (oracle 10g)?

Hello,
I am trying to insert into an oracle table multiple rows of values selected from a web page. Can I use a merge statement as a preparedStatement to avoid inserting duplicate records?
Does anybody have any examples they would like to share?
Any suggestions are greatly appreciated.
Thank you,
Logan

I've implemented this by batch inserting into a temp table then running a merge then dropping the temp table.
public void mergeMethod() {
        final String createsql = "CREATE TABLE temp (a INTEGER, b INTEGER, c INTEGER)";
        final String insertsql = "INSERT INTO temp (a, b, c) VALUES (?,?,?)";
        final String mergesql = "MERGE INTO my_table A " +
           "USING temp B ON (A.a = B.a AND A.b = B.b) " +
           "WHEN MATCHED THEN UPDATE SET A.c = B.c " +
           "WHEN NOT MATCHED THEN INSERT (A.id, A.a, A.b, A.c) " +
           "VALUES (my_seq.Nextval,B.a,B.b,B.c)";
        final String dropsql = "DROP TABLE temp";
     Connection conn = null;
     Statement cs = null;
     Statement ms = null;
     Statement ds = null;
     PreparedStatement ps = null;
     boolean retValue = false;
     try {
          conn = getConnection();
          conn.setAutoCommit(false);
          cs = conn.createStatement();
          ms = conn.createStatement();
          ds = conn.createStatement();
          ps = conn.prepareStatement(insertsql);
          for (int i=0; i< 10; i++){
               ps.setInt(1, i);
               ps.setInt(2, i+1);
               ps.setInt(3, i+2);
               ps.addBatch();
          // create temp table
          cs.execute(createsql);
          // execute in batch
          final int updateCount[] = ps.executeBatch();
          // merge the two tables
          ms.execute(mergesql);
          // drop the temp table
          ds.execute(dropsql);
          conn.commit();
          System.out.println("Rows is updated: " + updateCount.length);
     } catch (final SQLException e) {
          if (conn != null) {
              conn.rollback();
          throw e;
     } finally {
          if (ps != null) {
              ps.close();
          if (cs != null) {
              cs.close();
          if (ms != null) {
              ms.close();
          if (ds != null) {
              ds.close();
          if (conn != null) {
              conn.close();
}

Where should use Merge Statement in Form

hi experts
in Toad I am using this Merge statement , working accordingly.
I want to use this merge statement in my form where can I use it.
I created a Procedure in Form Named Proc_merge and call it when validate item of *:bankcode*
PROCEDURE proc_merge IS
BEGIN
declare
v_com varchar2(5000);
BEGIN
V_COM := '
Merge into allvouchers trg
using
(select voucher_type,voucher_no,voucher_date,cheque_no,bank_code,narration,debit,credit from(
select pv_voucher_type Voucher_type, pv_no Voucher_No, pv_date Voucher_date, Cheque_no, Acc_code Bank_code, Narration,Debit,Credit
from
                    (select a.pv_voucher_type,a.pv_no, a.pv_date, a.cheque_no, a.pv_gl_credit_code acc_code , b.ca_title,null Debit,
                                a.pv_gl_credit_amount Credit, a.Pv_narration Narration
                               from gl_pv a, ca_gl b where a.pv_gl_credit_Code = b.ca_code and a.pv_date > to_date (''30/06/2010'',''dd/mm/yyyy'')
union all
                    select a.pv_voucher_type,a.pv_voucher_no,a.pv_date,b.cheque_no,a.pv_acc_code,c.ca_title,a.pv_debit, Null credit,a.pv_desc
                    from payment_detail a, gl_pv b, ca_gl c
                    where a.pv_voucher_no = b.pv_no
                    and a.pv_date = b.pv_date
                    and a.pv_voucher_type = b.pv_voucher_type
                    and pv_acc_code = c.ca_code and a.pv_debit > 0
                    and a.pv_date > to_date (''30/06/2010'',''dd/mm/yyyy'')
union all
                        select a.pv_voucher_type, a.pv_voucher_no,a.pv_date, b.cheque_no, a.pv_acc_code, c.ca_title,
                    null ,a.pv_credit, a.pv_desc
                    from payment_detail a , gl_pv b , ca_gl c
                    where a.pv_voucher_no = b.pv_no
                    and a.pv_date = b.pv_date
                    and a.pv_acc_code = c.ca_code
                    and pv_credit >0 and a.pv_date > to_date (''30/06/2010'',''dd/mm/yyyy'')
union all
                    select a.pv_voucher_type, a.pv_no,pv_date,a.cheque_no , a.wht_debt_ac, b.ca_title , null, a.wht_amount, a.wht_narration
                    from gl_pv a , ca_gl b where a.wht_debt_ac = b.ca_code and wht_amount > 0
                    and a.pv_date > to_date (''30/06/2010'',''dd/mm/yyyy'')
                    where acc_code = :bankcode
                    Union all
---------------------   R.Voucher ----------------
select a.rv_voucher_type, a.rv_no, a.rv_date, a.chequeno, b.rv_acc_code, a.rv_narration,b.rv_debit, b.rv_credit
from gl_receipt a, receipt_detail b , ca_gl c
          where a.rv_no = b.rv_voucher_no
          and a.rv_date = b.rv_date
          and b.rv_acc_code = c.ca_code
          and b.rv_acc_code = :bankcode
          and a.rv_date > to_date (''30/06/2010'',''dd/mm/yyyy'')
----------------------- SRV --------------
Union all
select a.vm_voucher_type ,a.vm_no ,a.vm_date,a.chequeno,b.vd_acc_code, b.vd_desc VNARRAION,
          b.vd_debit VDEBIT,b.vd_credit VCREDIT
          from vouchermaster a, voucherdetail b , ca_gl c
          where a.vm_no= b.vd_no
          and a.vm_voucher_type = b.vm_voucher_type
          and a.vm_date = b.vm_date
          and b.vd_acc_code = c.ca_code
          and b.vd_acc_code = :bankcode
          and a.vm_date > to_date (''30/06/2010'',''dd/mm/yyyy'')
          and (a.show_voucher =''Y'' or Show_Voucher is Null)
          and a.vm_voucher_type =''SRV''
          )) Src
on (trg.v_type = src.voucher_type and trg.v_no = src.voucher_no and trg.v_date = src.voucher_date)
when matched then
update set
trg.v_chq = src.cheque_no, trg.v_bankcode = src.bank_code ,trg.v_debit=src.debit, trg.v_credit=src.credit, trg.v_narration=src.narration
when not matched then
insert (trg.v_type, trg.v_no, trg.v_date, trg.v_chq, trg.v_bankcode, trg.v_debit, trg.v_credit, trg.v_narration)
values (src.voucher_type, src.voucher_no, src.voucher_date, src.cheque_no, src.bank_code, src.debit, src.credit, src.narration)
FORMS_DDL(V_COM);
end;
END;no any result.
please guide me is this right way to do this. or kindly suggest me other ways to using merge statement in form.

Hello,
1.) why do you use dynamic SQL here? forms_ddl is a tricky one as it doesn't throw exceptions, so debugging is really fun. And I can't see any justification why this has to be dynamic SQL.
2.) put the whole thing in a stored procedure and call this procedure. write once, run everywhere.
cheers

Error executing a stored procedure from SSIS using the MERGE statement between databases

Good morning,
I'm trying to execute from SSIS a stored procedure that compares the content of two tables on different databases in the same server and updates one of them. To perform this action, I've created a stored procedure in the destination database and I'm
comparing the data between tables with the MERGE statement. When I execute the procedure on the destination database the error that I obtain is:
"Msg 916, Level 14, State 1, Procedure RefreshDestinationTable, Line 13
The server principal "XXXX" is not able to access the database "XXXX" under the current security context."
Some things to take in account:
1. I've created a temporary table on the same destination database to check if the problem was on the MERGE statement and it works fine.
2. I've created the procedure with the option "WITH EXECUTE AS DBO".
I've read that it can be a problem of permissions but I don't know if I'm executing the procedure from SSIS to which user/login I should give permissions and which.
Could you give me some tip to continue investigating how to solve the problem?
Thank you,
Virgilio

Read Erland's article http://www.sommarskog.se/grantperm.html
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
MS SQL optimization: MS SQL Development and Optimization
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Large scale of database and data cleansing
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Invalid Number Error in Merge Statement

Hi all.
I got an invalid number error in the following merge statement, but I don't know why. Maybe you can give me a hint.
MERGE INTO wam_table
USING (SELECT * FROM wam_table) b
ON (b.username = 'user'
AND b.mod = 'module'
AND b.trimester = '1')
WHEN MATCHED THEN
UPDATE SET as = '1', ad = '1', co = '1', pr = '1', date = localtimestamp, lus = 'username'
WHEN NOT MATCHED THEN
INSERT VALUES ('user','module','1','1','1','1','1', localtimestamp, 'username');
The invalid number error appears in the first line, but I don't know why?
Stephan

UPDATE SET as = '1', ad = '1', co = '1', pr = '1', date = localtimestamp, lus = 'username'SELECT * FROM sys.v_$reserved_words;
SQL> create table test1(as varchar2(10));
create table test1(as varchar2(10))
ERROR at line 1:
ORA-00904: : invalid identifier
SQL> create table test1(sno number, date date);
create table test1(sno number, date date)
ERROR at line 1:
ORA-00904: : invalid identifier
SQL> create table test1("as" varchar2(10));
Table created.
SQL>
SQL> create table test2(sno number, "date" date);
Table created.
SQL> desc test1
Name                                      Null?    Type
as                                                 VARCHAR2(10)
SQL> desc test2
Name                                      Null?    Type
SNO                                                NUMBER
date                                               DATE
SQL>

Using hints in MERGE statement

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