Locking in Merge Statement
Hi All,
I am using merge statement to insert and update rows. The merge statement takes a row level exclusive lock
Suppose the select statement returns 1 Million records does
1) The merge statement first tries to lock all the affected rows and then update / insert records.
OR
2) The merge statement aquires lock on an incremental basis as returned by the select statement.
The merge works just like an insert or update statement in that locks are acquired "on an incremental basis", but as of the timestamp the merge began. When Oracle detects that another session has updated a row in the meantime, then it re-executes the entire merge statement as of that new timestamp. It is sometimes referred to as "write consistency".
Here is a good Asktom thread on this topic: http://asktom.oracle.com/pls/asktom/f?p=100:11:1694097844551766::::P11_QUESTION_ID:11504247549852
Regards,
Rob.
Similar Messages
-
Dear Gurrus,
i am having a trouble in using oracle merge statement in abap, the moment i use where clause in the bottom it gives me an oracle error
EXEC SQL.
MERGE INTO SAP_GL_ACCOUNT@GETZDB a
USING SKA1 b
ON (A.gl_code= B.SAKNR)
WHEN MATCHED THEN
UPDATE SET a.posting_block = B.XSPEB,
a.locked = B.XSPEA,
A.BALANCE_SHEET = B.XBILK
WHEN NOT MATCHED THEN
insert (gl_code,
DESCRIPTION,
posting_block,
locked,
balance_sheet)
VALUES (b.SAKNR,'shadab',B.XSPEB,B.XSPEA,B.XBILK)
where b. mandt = 950 I am talking about this line
ENDEXEC.
the Moment i include WHERE clause in the botton before ENDEXEC it generates as error
" Database error text........: "ORA-00904: "A3"."MANDT": invalid identifier#ORA-02063: preceding line from GETZDB".
although its a basic feature of Oracle to inclue where clauses in insert or update in merge, but here it is generating an error.Hello Shadab,
As per my understanding of this oracle native sql code.
everything is fine except the use of direct value i.e 950 .
System is not able to process this value .
This normally happens even in normal abap sql statements also.
The better solution could be to declare a variable with the
same data type as "mandt" and then pass this "950" value into that
variable and then use this variable in the where clause instead of directly
passing the value.
i.e data:l_var type mandt vlaue '950'.
The other option could be to use the same hard coded
value but use this value in the where clause in quotations i.e.,
'950' instead of 950.
I hope this would solve your purpose, If not please reply me back.
thanks,
M.Naveen Kumar. -
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 : 3chris_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, -
First I tried doing the following:
EXEC SQL
MERGE INTO <table>
ect. etc.
And got Encountered the symbol "MERGE" when expecting one of the following:
for, register, at, close, commit, connect, declare, describe,
execute, fetch, open, prepare, rollback, select, whenever,
alter, audit, comment, create, delete, drop, get, grant,
insert, lock, noaudit, rename, revoke, set, update, validate,
arraylen, allocate, cache, call, collection, context,
deallocate, enable, free, lob, object, savepoint, analyze,
explain, truncate,
I later found out that you can't embed MERGE statements like that. So instead I tried to embed it as a PL/SQL block.
EXEC SQL EXECUTE
BEGIN
MERGE INTO <table>
USING (..)
ON (..)
WHEN MATCHED ..
WHEN NOT MATCHED ..
END;
END-EXEC;
And got the following: "MERGE INTO BENEFITS.BROKER_INFORMATION D
PLS-S-00103, Encountered the symbol "INTO" when expecting one of the following:
Does Pro*C just flat out hate merge statements?Hi,
I tried out, exactly the same as you tried..
Looks like the ANSI Pro C ompiler is not equiped to compile Merge statement.
So if we can get the compiler not touch the Merge statement, our job is done.
The work around is as follows:
/*SQL Declarations*/
EXEC SQL BEGIN DECLARE SECTION;
char O_str1[1024];
EXEC SQL VAR O_str1 IS STRING (1024);
EXEC SQL END DECLARE SECTION;
strcpy(O_str1,"MERGE INTO .....");
/*SQL query to be executed*/
EXEC SQL PREPARE curSqlStmt FROM :O_str1;
Please try and respond, it worked for me...
Regds
Santosh Iyengar -
i would like to know if it is possible to identify the row that is causing the problem when you use a merge statement in pl/sql. i know if you create a cursor and then loop through the data you can identify the column but what about if i have only a merge that will either insert or update. is it possible to identify which row of data cause the problem? thanks
You can use an Error Logging Table<br>
<br>
Nicolas. -
Hi
I am using a merge statement where i am updating and inserting records in table 2 from table 1.
I want to log the no. of rows updated and new rows inserted in the log table.
If i am not wrong, we can use sql%rowcount but i need help as how to use this statement.
Please suggest a solution.
Thanksuser11018028 wrote:
Will the sql%rowcount will give the no. of updated rows OR no. of newly inserted rows OR the sum of both in case of a merge statement.Total number of rows that changed (SUM). -
Question on passing string values to Partition clause in a merge statement
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
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.I've not used partitioning, but I do not see MERGE supporting a variable as a partition name in
MERGE INTO (SELECT *
FROM stores_comm_mob_sub_info
SUBPARTITION (lv_subpartition_name)) T1
USING ... I suspect it is looking for a partition called lv_subpartition_name.
I also don't see why you need that partition name - the ON clause should be able to identify the partition's criteria. -
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 PMDuplicate question
-
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,
VirgilioRead Erland's article http://www.sommarskog.se/grantperm.html
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
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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 -
Instead of trigger is NOT firing for merge statements in Oracle 10gR2
The trigger fires fine for a update statement, but not when I use a merge statement
with an update clause. Instead I get the normal error for the view ( which is a union all view, and therefore not updatable.)
The error is :-
ORA-01733: virtual column not allowed here
oracle release is 10.2.0.2 for AIX 64L
Is this a known bug ?
I've used a multi-table insert statement to work around the problem for inserts, but
for updates, I'd really like to be able to use a merge statement instead of an update.
Mark.This is my cut-down version :-
In this case case I'm getting an :-
ORA-01446: cannot select ROWID from, or sample, a view with DISTINCT, GROUP BY, etc.
rather then the ora-01733 error I get in the real code ( which is an update from an involved
XML expression - cast to a table form)
create table a ( a int primary key , b char(30) ) ;
create table b ( a int primary key , b char(30) ) ;
create view vw_a as
select *
from a
union all
select *
from b ;
ALTER VIEW vw_a ADD (
PRIMARY KEY
(a) DISABLE);
DROP TRIGGER TRG_IO_U_ALL_AB;
CREATE OR REPLACE trigger TRG_IO_U_ALL_AB
instead of update ON vw_a
for each row
begin
update a targ
set b = :new.b
where targ.a = :new.a
if SQL%ROWCOUNT = 0
then
update b targ
set b = :new.b
where targ.a = :new.a
end if ;
end ;
insert into a values (1,'one');
insert into a values (2,'two');
insert into a values (3,'three');
insert into b values (4,'quatre');
insert into b values (5,'cinq');
insert into b values (6,'six');
commit;
create table c as select a + 3 as a, b from a ;
commit;
merge into vw_a targ
using (select * from c ) src
on ( targ.a = src.a )
when matched
then update
set targ.b = src. b
select * from vw_a ;
rollback ;
update vw_a b
set b = ( select c.b from c where b.a = c.a )
where exists ( select c.b from c where b.a = c.a ) ;
select * from vw_a ;
rollback ; -
Need suggestion in MERGE Statement
Hi,
I have a scenario like, I have one table T1 with 500,000 to 700,000 records and now I want to check the other table T2 if record exists or not. If record exists with opposite amount ( - or + ) as compare with first table T1 then I need to insert this record from second table T2 to first table T1 and if record is not exists then need to update the flag with 'N' in first table T1. Can MERGE statement will be better solution in this scenario?
Thanks,Here's something generic:
insert into T1 (columns...)
select (columns...)
from T1
where exists (select 1
from T2
where T2.some_key = T1.some_key
and T2.some_value + T1.some_value = 0);
update T1
set some_flag = 'N'
where not exists (select 1
from T2
where T2.some_key = T1.some_key);Sure seems odd though. Are you sure you wrote your original question correctly? -
Help needed in MERGE statement
Hi,
I am new to PL/SQL, I want to update a table called "final_test" based on the below query result.
1. I want to check whether that particular record is present or not in my "final_test" table.
2. If its present in the "final_test" table and the process_status got changed then I want to update that alone in my "final_test" table.
3. If its not present then I want to insert that record into my "final_test" table.
Basically I am retrieving the report and its status for a particular date.
select
b.id,
a.name,
a.t_name,
c.process_status,
c.time_process
from rep_tab_map a, j_tab_map b, proc_status c
where a.t_name=b.t_name
and b.id=c.id (+)
and trunc(c.date_start)=trunc(sysdate -1)
group by a.name,b.id,c.process_status,c.time_process,a.t_name
order by 2
I thought of using Merge statement but i am not sure what i have to use in ":USING" and "ON" clause.
Please help me with MERGE or with someother way.
ThanksAssuming final_test has same structure as select list in your query:
merge
into final_test a
using (
select b.id,
a.name,
a.t_name,
c.process_status,
c.time_process
from rep_tab_map a,
j_tab_map b,
proc_status c
where a.t_name=b.t_name
and b.id=c.id(+)
and trunc(c.date_start)=trunc(sysdate -1)
group by a.name,b.id,c.process_status,c.time_process,a.t_name
) b
on (b.id = a.id)
when matched then update set a.name = case a.process_status
when b.process_status then a.name
else b.name
end,
a.t_name = case a.process_status
when b.process_status then a.t_name
else b.t_name
end,
a.process_status = b.process_status,
a.time_process = case a.process_status
when b.process_status then a.time_process
else b.time_process
end
when not matched then insert(
a.id,
a.name,
a.t_name,
a.process_status,
a.time_process
values(
b.id,
b.name,
b.t_name,
b.process_status,
b.time_process
/SY. -
Help needed in the Merge Statement
Hi All,
I am using MERGE statement in my program. I want to maintain the log for the duplicate reords mean maintain the log for those reocrds which are updated in the merge statement.
Can any one help me in this that how can i maintain the log?
Thanks for your help in advance.
kind Regards,http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:35615502072484
-
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 SevalkarMERGE 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;
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