Select data as table from xml string using xquery.

Hi ,
I have this xml
declare @xml xml
set @xml =' <StudentsData>
<StudentData>
<id>1</id>
<subjects>
<subject>
<subid>1</subid>
<marks>30</marks>
</subject>
<subject>
<subid>2</subid>
<marks>40</marks>
</subject>
</subjects>
</StudentData>
<StudentData>
<id>2</id>
<subjects>
<subject>
<subid>1</subid>
<marks>30</marks>
</subject>
<subject>
<subid>2</subid>
<marks>40</marks>
</subject>
</subjects>
</StudentData>
</StudentsData>'
select @xml
I wan the output to be shown as
id subid marks
1 1 30
1 2 40
2 1 30
2 2 40
how can i do this using XQUERY in sqlserver ?.
Thanks in advance for any help.

how can i do this using XQUERY in sqlserver ?
Sure you can and it's easy:
declare @xml xml
set @xml =' <StudentsData>
<StudentData>
<id>1</id>
<subjects>
<subject>
<subid>1</subid>
<marks>30</marks>
</subject>
<subject>
<subid>2</subid>
<marks>40</marks>
</subject>
</subjects>
</StudentData>
<StudentData>
<id>2</id>
<subjects>
<subject>
<subid>1</subid>
<marks>30</marks>
</subject>
<subject>
<subid>2</subid>
<marks>40</marks>
</subject>
</subjects>
</StudentData>
</StudentsData>'
select students.Rows.value('subid[1]', 'int') AS id
,students.Rows.value('marks[1]', 'int') AS marks
FROM @xml.nodes('/StudentsData/StudentData/subjects/subject') AS students(Rows)
Olaf Helper
[ Blog] [ Xing] [ MVP]

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Hi Experts,
Please provide a procedure to implement my below requirement.
Since I am new to queue concept.
[code]- <MESSAGES>
- <MESSAGE ID="3026900">
<MSG_ID>3026900</MSG_ID>
<DT_POSTED>6/20/2013 08:15:48</DT_POSTED>
<POSTED_BY>GPD_MSG_EXTRACTOR</POSTED_BY>
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<z:row business_unit_id="202" geo="GB" sku="A0814819" dw_maint_flag="False" stock_status_id="0" lead_time="30" est_qty="0" leadtime_lock="False" update_dts="2013-06-12T02:08:30.367" update_uid="DEACTIVATE_SKU_PROCESS" leadtime_dts="2010-05-22T02:21:21.707" leadtime_uid="Lead_Time_Rules" />
<z:row business_unit_id="2828" geo="BE" sku="A0814820" dw_maint_flag="False" stock_status_id="0" lead_time="30" est_qty="0" leadtime_lock="False" update_dts="2013-06-12T02:08:30.367" update_uid="DEACTIVATE_SKU_PROCESS" leadtime_dts="2010-05-22T02:21:21.707" leadtime_uid="Lead_Time_Rules" />
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<z:row business_unit_id="2828" geo="BE" sku="A0814822" dw_maint_flag="False" stock_status_id="0" lead_time="30" est_qty="0" leadtime_lock="False" update_dts="2013-06-12T02:08:30.367" update_uid="DEACTIVATE_SKU_PROCESS" leadtime_dts="2010-05-22T02:21:21.707" leadtime_uid="Lead_Time_Rules" />
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- <RECORDSET TABLE_NAME="LEAD_TIME">
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- <rs:data>
<z:row business_unit_id="202" geo="GB" sku="A0814817" dw_maint_flag="False" stock_status_id="0" lead_time="30" est_qty="0" leadtime_lock="False" update_dts="2013-06-12T02:08:30.367" update_uid="DEACTIVATE_SKU_PROCESS" leadtime_dts="2010-05-22T02:21:21.707" leadtime_uid="Lead_Time_Rules" />
<z:row business_unit_id="2828" geo="BE" sku="A0814816" dw_maint_flag="False" stock_status_id="0" lead_time="30" est_qty="0" leadtime_lock="False" update_dts="2013-06-12T02:08:30.367" update_uid="DEACTIVATE_SKU_PROCESS" leadtime_dts="2010-05-22T02:21:21.707" leadtime_uid="Lead_Time_Rules" />
</rs:data>
</xml>
</RECORDSET>
</WORK_UNIT>
</WORK_SET>
</MSG>
</MESSAGE>
</MESSAGES>[/code]
The above XML message is receieved by our oracle queue.Once the message is receieved to our queue.
We have to process the message according to the action(UPDATE ADD DELETE).
From this message we have to process only 3 fields (geo sku lead_time).
These three feilds data should be processed into the SKU_LEAD_TIME table based on the action.
Req1:
IF the action is update then the records should be updated in the "LEAD_TIME_TABLE" table
IF the action is update then the records should be updated in the "LEAD_TIME_TABLE" table
based on the below condition.
[code]UPDATE LEAD_TIME_TABLE SET lead_time= lead time from xml message
WHERE LEAD_TIME_TABLE.SKU=sku from xml message AND LEAD_TIME_TABLE.GEO=geo from xml message;[/code]
Req2:
IF the action is delete then the records should be deleted from the "LEAD_TIME_TABLE" table.
based on the below condition.
[code]DELETE FROM LEAD_TIME_TABLE
WHERE LEAD_TIME_TABLE.SKU=sku from xml message AND LEAD_TIME_TABLE.GEO=geo from xml message;[/code]
Req3:
IF the action is add then the records should be inserted in the "LEAD_TIME_TABLE" and "LEAD_TIME_TABLE_STAGING" table
based on the below conditions.
Req3.1:
If SKU from XML message is available in "SKU_TABLE" table
then the three parameter(GEO SKU LEAD_TIME) values from XML message should be inserted into "LEAD_TIME_TABLE" table.
Req3.2:
If SKU from XML message is not available in "SKU_TABLE" table
then the three parameter(GEO SKU LEAD_TIME) values from XML message should be inserted into "LEAD_TIME_TABLE_STAGING" table.
Req3.3:
Once the new SKU is avilable in "SKU_TABLE" table then the corresponding SKU record should be
inserted into "LEAD_TIME_TABLE" table and that record should be deleted from "LEAD_TIME_TABLE_STAGING" table.
I am posting required scripts and test cases.
[code]CREATE TABLE LEAD_TIME_TABLE(sku VARCHAR2(20),model VARCHAR2(20),class CHAR(1),geo VARCHAR2(6),lead_time NUMBER,created DATE);
CREATE TABLE LEAD_TIME_TABLE_STAGING(sku VARCHAR2(20),geo VARCHAR2(6),lead_time NUMBER);
CREATE TABLE SKU_TABLE(sku VARCHAR2(20),geo VARCHAR2(6),lead_time NUMBER);
INSERT INTO SKU_TABLE VALUES('A0814817','GB',30);
INSERT INTO SKU_TABLE VALUES('A0814818','AT',30);
INSERT INTO SKU_TABLE VALUES('A0814819','GB',30);
INSERT INTO SKU_TABLE VALUES('A0814820','BE',30);
INSERT INTO SKU_TABLE VALUES('A0814821','GB',30);
INSERT INTO LEAD_TIME_TABLE(SKU,GEO,LEAD_TIME) VALUES('A0814817','GB',30);
INSERT INTO LEAD_TIME_TABLE(SKU,GEO,LEAD_TIME) VALUES('A0814818','AT',20);
INSERT INTO LEAD_TIME_TABLE(SKU,GEO,LEAD_TIME) VALUES('A0814819','GB',20);
INSERT INTO LEAD_TIME_TABLE(SKU,GEO,LEAD_TIME) VALUES('A0814820','BE',20);
INSERT INTO LEAD_TIME_TABLE_STAGING VALUES('A0814822','BE',30);[/code]
From the above message.
Test case for req3.1:
The action for SKU numbers "A0814821" "A0814822" are insert.
The SKU number "A0814821" is available in SKU_TABLE table.
so the record should be inserted in the LEAD_TIME_TABLE.
[code]SELECT * FROM LEAD_TIME_TABLE;
SKU        GEO   LEAD_TIME
A0814817    GB    30
A0814818    AT    20
A0814819    GB    20
A0814820    BE    20
A0814821    GB    30[/code]
Test case for req3.2:
The action for SKU numbers "A0814821" "A0814822" are insert.
The SKU number "A0814822" is not available in SKU_TABLE table.
so the record should be inserted in the LEAD_TIME_TABLE_STAGING.
[code]SELECT * FROM LEAD_TIME_TABLE_STAGING;
SKU        GEO   LEAD_TIME
A0814822    BE     30[/code]
Test case for req3.3:
The action for SKU numbers "A0814821" "A0814822" are insert.
The SKU number "A0814822" is not available in SKU_TABLE table.
Once I insert SKU number "A0814822" in SKU_TABLE table.
The corresponding records automatically should be inserted in the LEAD_TIME_TABLE
and should be deleted from LEAD_TIME_TABLE_STAGING.
[code]SELECT * FROM LEAD_TIME_TABLE_STAGING; --- should return NULL.
SELECT * FROM LEAD_TIME_TABLE;
SKU        GEO   LEAD_TIME
A0814817    GB    30
A0814818    AT    20
A0814819    GB    20
A0814820    BE    20
A0814821    GB    30
A0814822    BE    30[/code]
Please help me.
Thanks in advance.

Hi,
I have resolved this issue.
But I have stuck up in implementing some of the scenarios.
Req1:
IF the action is update then the records should be updated in the "LEAD_TIME_TABLE" table
IF the action is update then the records should be updated in the "LEAD_TIME_TABLE" table
based on the below condition.
UPDATE LEAD_TIME_TABLE SET lead_time= lead time from xml message
WHERE LEAD_TIME_TABLE.SKU=sku from xml message AND LEAD_TIME_TABLE.GEO=geo from xml message;
Req3:
IF the action is add then the records should be inserted in the "LEAD_TIME_TABLE" and "LEAD_TIME_TABLE_STAGING" table
based on the below conditions.
Req3.1:
If SKU from XML message is available in "schema_name.SKU_TABLE" table.
The schema_name.SKU_TABLE table should be selected based on "business_unit_id" of XML message and "sid" of MAPPING table WHERE business_unit_id=sid.
then the three parameter(GEO SKU LEAD_TIME) values from XML message and two fields MODEL,CLASS from SKU_TABLE
should be inserted into "LEAD_TIME_TABLE" table.
Req3.2:
If SKU from XML message is not available in "schema_name.SKU_TABLE" table
The schema_name.SKU_TABLE table should be selected based on "business_unit_id" of XML message and "sid" of MAPPING table WHERE business_unit_id=sid.
then the four parameter(BUSINESS_UNIT_ID GEO SKU LEAD_TIME) values from XML message
should be inserted into "LEAD_TIME_TABLE_STAGING" table.
Req3.3:
Once the new SKU is avilable in "schema_name.SKU_TABLE" table then the corresponding SKU record should be
inserted into "LEAD_TIME_TABLE" table and that record should be deleted from "LEAD_TIME_TABLE_STAGING" table.
The schema_name.SKU_TABLE table should be selected based on "business_unit_id" of LEAD_TIME_TABLE_STAGING and "sid" of MAPPING table WHERE business_unit_id=sid.
I am posting required scripts and test cases.
[code]CREATE TABLE LEAD_TIME_TABLE(sku VARCHAR2(20),model VARCHAR2(20),class CHAR(1),geo VARCHAR2(6),lead_time NUMBER,created DATE);
CREATE TABLE LEAD_TIME_TABLE_STAGING(business_unit_id NUMBER,sku VARCHAR2(20),geo VARCHAR2(6),lead_time NUMBER);
CREATE TABLE SKU_TABLE(sku VARCHAR2(20),model VARCHAR2(20),class VARCHAR2(10));
CREATE TABLE mapping(sid NUMBER,schema_name VARCHAR2(20));
INSERT INTO LEAD_TIME_TABLE(SKU,GEO,LEAD_TIME) VALUES('A0814817','GB',30);
INSERT INTO LEAD_TIME_TABLE(SKU,GEO,LEAD_TIME) VALUES('A0814818','AT',20);
INSERT INTO LEAD_TIME_TABLE(SKU,GEO,LEAD_TIME) VALUES('A0814819','GB',20);
INSERT INTO LEAD_TIME_TABLE(SKU,GEO,LEAD_TIME) VALUES('A0814820','BE',20);
INSERT INTO SKU_TABLE VALUES('A0814817','M125','C111');
INSERT INTO SKU_TABLE VALUES('A0814818','M127','A111');
INSERT INTO SKU_TABLE VALUES('A0814819','M126','A111');
INSERT INTO SKU_TABLE VALUES('A0814820','N100','B111');
INSERT INTO SKU_TABLE VALUES('A0814821','P123','B111');
INSERT INTO mapping VALUES(202,'WEDB');
INSERT INTO mapping VALUES(2828,'HR');
INSERT INTO mapping VALUES(3838,'BB');
[/code]
Test case for req3.1:
The action for SKU numbers "A0814821" "A0814822" are insert.
The SKU number "A0814821" is available in schema_name.SKU_TABLE table.
so the record should be inserted in the LEAD_TIME_TABLE.
[code]SELECT * FROM LEAD_TIME_TABLE;
SKU        MODEL CLASS GEO   LEAD_TIME
A0814817    M125   C111   GB     30
A0814818    M127   A111   AT     20
A0814819    M126   A111   GB     20
A0814820    N100   B111   BE     20
A0814821    P123   B111   GB     30
[/code]
Test case for req3.2:
The action for SKU numbers "A0814821" "A0814822" are insert.
The SKU number "A0814822" is not available in SKU_TABLE table.
so the record should be inserted in the LEAD_TIME_TABLE_STAGING.
[code]SELECT * FROM LEAD_TIME_TABLE_STAGING;
BUSINESS_UNIT_ID       SKU        GEO   LEAD_TIME
2828               A0814822    BE     30[/code]
Test case3.3.3:
The action for SKU numbers "A0814821" "A0814822" are insert.
The SKU number "A0814822" is not available in SKU_TABLE table.
Once I insert SKU number "A0814822" in SKU_TABLE table.
The corresponding records automatically should be inserted in the LEAD_TIME_TABLE
and should be deleted from LEAD_TIME_TABLE_STAGING.
[code]INSERT INTO SKU_TABLE VALUES('A0814822','P123','B111');
SELECT * FROM LEAD_TIME_TABLE_STAGING; --- should return NULL.
SELECT * FROM LEAD_TIME_TABLE;
SKU        MODEL CLASS GEO   LEAD_TIME
A0814817    M125   C111   GB     30
A0814818    M127   A111   AT     20
A0814819    M126   A111   GB     20
A0814820    N100   B111   BE     20
A0814821    P123   B111   GB     30
A0814822    P123   B111   GB     30[/code]
I am able to implement Req1 and Req3.1 for action UPDATE and INSERT in single merge statement.
However my code is not taking care of all my requirements.
Please find my below code.
[code]   CREATE OR REPLACE PACKAGE BODY messg_values_process
   AS
    procedure ProcessInboundLtimeMessage(p_xml_message XmlType)
    is
    begin
        for work_unit in (
            select message.MESSAGE_ID
                 , work_unit.ACTION
                 , work_unit.LEADTIME_NODES
              from XmlTable(
                    '/MESSAGES/MESSAGE'
                    passing p_xml_message
                    columns
                        MESSAGE_NO          for ordinality
                      , MESSAGE_ID          number path '@ID'
                      , WORK_UNIT_NODES     XmlType path 'MSG/WORK_SET/WORK_UNIT'
                   ) message
                 , XmlTable(
                    XmlNamespaces(
                        'urn:schemas-microsoft-com:rowset' as "rs"
                      , '#RowsetSchema' as "z"
                    '/WORK_UNIT'
                    passing message.WORK_UNIT_NODES
                    columns
                        WORK_UNIT_NO        for ordinality
                      , ACTION              varchar2(10 char) path '@ACTION'
                      , LEADTIME_NODES       XmlType path 'RECORDSET[@TABLE_NAME="LEAD_TIME"]/xml/rs:data/z:row'
                   ) work_unit
    LOOP
            CASE work_unit.ACTION
              WHEN 'ADD'    THEN MergeData(work_unit.LEADTIME_NODES);
              WHEN 'UPDATE' THEN MergeData(work_unit.LEADTIME_NODES);
              WHEN 'DELETE' THEN RemoveData(work_unit.LEADTIME_NODES);
              ELSE null;
            END CASE;
        END LOOP;
    END ProcessInboundLtimeMessage;
        procedure MergeData(p_leadtime_nodes XmlType)
    is
    begin
        if (p_leadtime_nodes is not null) then
            merge into LEAD_TIME_TABLE old
            using(
                select *
                  from XmlTable(
                        XmlNamespaces(
                            'urn:schemas-microsoft-com:rowset' as "rs"
                          , '#RowsetSchema' as "z"
                        '/z:row[not(@business_unit_id=following-sibling::z:row/@business_unit_id)]'
                        passing p_leadtime_nodes
                        columns
                            ITEM_NO             for ordinality
                          , BUSINESS_UNIT_ID    number path '@business_unit_id'
                          , GEO                 varchar2(20 char) path '@geo'
                          , SKU                 varchar2(20 char) path '@sku'
                          , LEAD_TIME           number path '@lead_time'
            ) NEW
               ON (old.VK_UNIT = new.SKU
              AND old.GEO=new.GEO)
            when matched then update
               set old.LEAD_TIME = new.LEAD_TIME
            when not matched then INSERT
                 ( old.VK_UNIT
                 , old.MODEL
                 , old.CLASS
                 , old.GEO
                 , old.LEAD_TIME
                 , old.COUNTDOWN
                 , old.LAST_UPDATED_DATE
                 values
                 ( new.SKU
                 ,'A123'
                 ,'A1234'
                 , new.GEO
                 , new.LEAD_TIME
                 , 'N'
                 , sysdate
        end if;
         exception
        when others then
            LogDataError(
                'MergeData Procedure Failed #: '||chr(10)||sqlerrm
              , null
              , null
    END MergeData;
END messg_values_process;
/[/code]
Please help me.
Thanks.

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Hi,
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Is it possible in expdp?
Thanks in advance ..
Thanks,

Hi,
you have to use "schemas=user1,user2 include=table:"in('table1,table2')" use parfileexpdp scott/tiger@db10g schemas=SCOTT include=TABLE:"IN ('EMP', 'DEPT')" directory=TEST_DIR dumpfile=SCOTT.dmp logfile=expdpSCOTT.log{quote}
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{code}
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Export: Release 10.2.0.4.0 - 64bit Production on Friday, 15 October, 2010 18:34:32
Copyright (c) 2003, 2007, Oracle. All rights reserved.
Username: / as sysdba
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Starting "SYS"."SYS_EXPORT_SCHEMA_01": /******** AS SYSDBA directory=EXP_DUMP dumpfile=test.dmp logfile=test.log SCHEMAS=('MM','MMM') include=TABLE:"IN('EA_EET_TMP','WS_DT')"
Estimate in progress using BLOCKS method...
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 0 KB
Processing object type SCHEMA_EXPORT/TABLE/TABLE
Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX
Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
Processing object type SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
. . exported "MM"."EA_EET_TMP" 0 KB 0 rows
ORA-39165: Schema MMM was not found.
Master table "SYS"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded
Dump file set for SYS.SYS_EXPORT_SCHEMA_01 is:
/export/home/nucleus/dump/test.dmp
Job "SYS"."SYS_EXPORT_SCHEMA_01" completed with 1 error(s) at 18:35:19
{code}
When checking expdp help=y shows :-
{code}TABLES Identifies a list of tables to export - one schema only.{code}
As per few testing,tables from different schemas are not possible to export using expdp in a single command.
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I am need to insert data into a table from the text file. I pull the data into an internal table using GUI_UPLoad. I read the data into an internal table and concatenate data into a string. I need to do this because the structure of the table is dynamic. it is used to upload a series of tables each with different structure, But the data is stored in the string v_tabledata. How to do that.
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