SQL & PL/SQL :: Select Some Attributes From That Object In Same Query
Oct 25, 2013
He had created an object type and wanted to populate it in a query. So far so good. But then he wanted to select some attributes from that object in the same query. Basically, he wanted to do something like this:
With his_view
As
( select object_type( attr1, attr2) theobj
From his_table
Where ...
)
Select theobj.attr1
From his_view
But somehow he was hitting ORA-00904: "THEOBJ"."ATTR1": invalid identifier over and over again.Here's a test script:
Create type mhe_type As Object( col1 Number
, col2 Varchar2(30)
)
/
-- Basic select
With mhe_view
[code]...
Specify a correlation name, which is alias for the table, view, materialized view, or subquery for evaluating the query. This alias is required if the select list references any object type attributes or object type methods. link...
I need to incorporate a count of the number of units from TableG that have a certain status. I tried the following but when I tried to run it, I get an error saying that it's not a Group By expression -the red part is highlighted in TOAD.
select B.desc "Location", F.desc "Source", A.amt "Amount", sum(G.G_CNT) "No. Units", (select count(*) from TableG G2 where G2.D_ID = D.ID and G2.status = 10 group by G2.D_ID)"Count", c.desc "Status" [code]....
Any thoughts how I can incorporate a query in my select of attributes?how to Group By something.
I have data in point cloud (x,y,z,a,b,c,d (a,b,c,d are some attributes about this point)). i create a point cloud (sdo_pc - geometry), block tables (sdo_geometry - geometry). if i use a function to_geometry, result is only in multi point without attributes. it is way display this 3D data, and at the same time inquire of concerning for a attributes in concrete points?
how to display REFS from within a REF. I've not used my exact code here as its quite a big file so i've made a similar scenario to get me point across. Here is the code first:
1 CREATE OR REPLACE TYPE object1 AS OBJECT ( 2 object_id NUMBER(5), 3 object_name varchar2(10), 4 object_added DATE); 5 / 6 CREATE TABLE object1_tab OF object1 (object_id PRIMARY KEY); 7 / 8 INSERT INTO object1_tab 9 VALUES (1,'Daniel',sysdate); 10 / 11 show errors; 12 / 13 CREATE OR REPLACE TYPE object2 AS OBJECT ( 14 object_id NUMBER(5), 15 object_job varchar2(10), 16 object1_ref REF object1 ); 17 / 18 CREATE TABLE object2_tab OF object2(object_id PRIMARY KEY); 19 / 20 INSERT INTO object2_tab 21 VALUES (1,'Developer',(SELECT REF(p) FROM object1_tab P 22 WHERE VALUE(p).object_id = &object_id)); 23 / 24 select DEREF(object1_ref) 25 FROM object2_tab; 26 / 27 CREATE OR REPLACE TYPE object3 AS OBJECT ( 28 object_id NUMBER(5), 29 object_location VARCHAR2(20), 30 object2_ref REF object2); 31 / 32 CREATE TABLE object3_tab OF object3 (object_id PRIMARY KEY); 33 / 34 INSERT INTO object3_tab 35 VALUES (1,'New York',(SELECT REF(p) FROM object2_tab P 36 WHERE VALUE(p).object_id = &object_id)); 37 / 38 show errors; 39 / 40 select object_id,object_location,DEREF(object2_ref) 41 FROM object3_tab; 42 /
As yot can see in the code each object refernces from the previous. When I view the DEREF in the third table (object3_tab) i get the following output:
OBJECT_ID OBJECT_LOCATION DEREF(OBJECT2_REF) --------- -------------------- ---------------------------------- 1 New York [SANTA.OBJECT2]
While practicing with Triggers, the following error was encountered. An Object Type and an object Table are created.
create or replace type typPerson is object (id number, firstname varchar2(30), lastname varchar2(30) [code].........
I executed the below insert statement, and I got the following error.
SQL> insert into person_obj_tab values (10,'Object1','From Trigger'); insert into person_obj_tab values (10,'Object1','From Trigger') * ERROR at line 1: ORA-03113: end-of-file on communication channel Process ID: 4153 Session ID: 136 Serial number: 305 [code]......
SQL> insert into person_obj_tab values (10,'Object','Original');
1 row created.Question:
1) Trigger of version 1 did not report any error during compilation, but during DML execution, hangs for sometime and gives the above error. 2) Whether direct assignment of Objects of greater size is possible inside triggers built on object Tables? 3) Suppose an object contain multiple attributes (say more than 20), then how to assign them inside a trigger?
I have a problem with executing oracleCommand.ExecuteReader() method. Whatever I try it always returns null and it won't create OracleData reader object. I'm using ODAC 1120320_x64 for .net 4.0 and timesten112241.win64. Don't sure what to do. Debugger is showing strange thing in OracleConnection object : ConnectionState = Closed, but output of ttStatus shows connection to TimesTen data store and ExecuteNonQuery() command works just fine with or without (in or out) parameters. But when I try to execute some query with multile output such as select *, I can't get any result.
I also have a strange problem with connection.Open() When I execute Open() i throws AccessViolationException that can be handled with [Handle ProcessCorruptedStateExceptions] attribute, but connection is established after that and my application works fine until I try to instance OracleDataReader object.
Here is the code: OracleCommand select = null; OracleDataReader reader = null;
select = new OracleCommand(selectStmt, connection); select.CommandType = CommandType.Text; try { reader = select.ExecuteReader(); // this line throws NullReferenceException if (reader.HasRows) { [code]....
Just to mention, I tried it with different queries (pl/sql, plane sql, stored procedure) and all of them works fine in SQL Developer, but not in app.
Is there a technique to getting a Top-N query to work as a sub-select in a larger query -or- is there another way to generate Top-N like results that works as a sub-select?
Background:
We have a large query that is being used to build an export from a legacy HR system to a new one. Amount the data needed in the export is the employees primary phone number.
The legacy HR system allows multiple phone numbers to be stored in a simple table structure:
SELECT emp_id, phone_type, phone_number FROM employee_phones
The new HR system does allow for multiple phone numbers, however they need a primary phone number identified and stored with the employee master information. (Subsequent phone numbers get stored in alternate table.)
From a business perspective, we have decided that if they have a HOME phone in the legacy system that should be the primary in the new system, if no HOME phone, then WORK, if no WORK then CELL.
That can be represented as:
SELECT * FROM employee_people_phones WHERE emp_id = '46021' ORDER BY decode(phone_type, 'HOME', 'a', 'WORK', 'b', 'CELL', 'c', 'z')
SELECT * FROM (SELECT * FROM employee_people_phones WHERE emp_id = '46021' ORDER BY decode(phone_type, 'HOME', 'a', 'WORK', 'b', 'CELL', 'c', 'z')) results WHERE ROWNUM = 1
SELECT phone_number FROM (SELECT phone_number FROM employee_people_phones WHERE emp_id = '46021' ORDER BY decode(phone_type, 'HOME', 'a', 'WORK', 'b', 'CELL', 'c', 'z')) results WHERE ROWNUM = 1
phone_number ------------------- 1111111111
However, when the Top-N query is added as a sub-select in a larger query using the employee id from the larger query (WHERE emp_id = export.emp_id), it fails saying that �export.emp_id� is not a valid id.
(SELECT phone_number FROM (SELECT phone_number FROM employee_people_phones WHERE emp_id = export.emp_id ORDER BY decode(phone_type, 'HOME', 'a', 'WORK', 'b', 'CELL', 'c', 'z')) results WHERE ROWNUM = 1)
1.Any way around this? Is it possible to put a Top-N (with a WHERE clause using data from the main query) in a sub-select?
2.Any alternatives (other than Top-N) to delivering a ROWNUM=1 result with a �custom� ORDER BY statement?
Other Notes: Yes, we know we could do two queries in the data conversion first deliver the bulk data to the target table, and then update with the phone numbers. However, for multiple reasons, that is less than desirable.
Is there any query to find the dependent object details for any object. Like if mview is built on a table, then i should be able to find the table name with out checking code of the mview. similar way for view and functions or procedures etc...
MY requirment is: I want the first three nullable attributes. For Eg: If I have 60 columns in table, I need to fetch the first three null data in a row.
i have also another concern as per below xml file.
My requirement is to identify perticular node ,whose having PriorValue attribute present in <pi:the Actual_Comp_Change> tag,those record should return.
The requirement is to find the last date when either ATTRIB1 or ATTRIB2 were modified for each ID. There are many other columns in the table, but I'm not interested in other columns.
Test Case
SET LINES 100 SET PAGES 100 DROP TABLE test_log / CREATE TABLE test_log
[code]....
Expected Output
ID LAST_CHANGE_DATE ---------- -------------------- 11 02-SEP-2012 10:58:32 35 05-AUG-2012 10:58:32
I have written the below query, to get the required output.
SELECT MAX(i_date) last_change_date FROM ( SELECT seq,id, attrib1, attrib2, i_date, row_number() OVER (PARTITION BY attrib1 ORDER BY i_date) rn1, row_number() OVER (PARTITION BY attrib2 ORDER BY i_date) rn2
I have created a pl sql type as object with five attributes as below.Now im trying to insert only 3 attributes with the attribute names ( As like insert into statement with column names).
Create type address_test as object ( Streetno varchar2(20), Locality varchar2(20), City varchar2(20), Pin varchar2(7), Country varchar2(20)) [code]....
Is that possible to use attribute names in the insert statement of column object type ?
I'm using the odp.net type factory (class IOracleCustomType and the specific annotations...) to map udts to c# classes.By now I had no problems with it, because I've never used "ref" attributes within the udts.Now I need the use of "ref" attributes within udts but it seems that the odp factory cannot handle those references.
For example:_*
A Simple Type: create or replace type bookcontent_t force as object ( id number(20) , name varchar2(1000) );*And a collection with references to objects of this type:*
create or replace type fms_bookcontent_ref_cln force as table of *ref* bookcontent_t;The c# class is generated by odp.net.
When I retrieve data by using odp.net I get a collection with the correct number of elements but the values are null.What can I do to solve this problem with "ref" attributes/lists? How can I get the referenced object instances?
I have an Type-object typeObj1 that consists another Type-object typeObj2. this def has another Type-object typeObj3. how to access variable declared inside typeObj3. I have syntax below for each Type.
CREATE OR REPLACE TYPE typeObj1 AS OBJECT ( SYSTEM_IDENTIFER VARCHAR2(50), PROCESS_TYPE VARCHAR2(50), abc typeObj2
) /
[Code]...
/I have tried to access the type-object in where clause in following way
FROM TABLE(CAST(I_typeObj1 AS typeObj1)) ITTPRC, ...... Where ....... AND (ADDKEY.ADDTN_INFO_KEY_TYP_NM IN (SELECT ADDTN_INFO_KEY_TYP_NM FROM TABLE(ITTPRC.abc)))
AND (ADTINF.ADDTN_RQST_TYP_VAL_DT IN (SELECT ADDTN_RQST_VAL_DT FROM TABLE( ITTPRC.def)) OR ITTPRC.def IS NULL ) AND (ADTINF.ADDTN_RQST_TYP_VAL_NUM IN (SELECT ADDTN_RQST_VAL_NUM FROM TABLE( ITTPRC.def)) OR ITTPRC.def IS NULL ) AND (ADTINF.ADDTN_RQST_TYP_VALUE IN (SELECT ADDTN_RQST_VALUE FROM TABLE( ITTPRC.def)) OR ITTPRC.def IS NULL )
In this way i am able to access the variable inside typeObj3. But problem is i am getting error "ORA-01427 single-row subquery returns more than one row" when i pass more that one typeObj2.
We're using Oracle 10g for development purposes. I have 2 same schema with approximately same data. I'm running same query on 2 schemas and I see that the first schema runs the query around 20sec and the 2.schema less than 1 sec. I thought first that there may be missing constraints or indexes but all are the same.
I checked the plan for the 2 schemas and I see that the plan is different.
Here is the query: SELECT ccc.ComponentId AS "ComponentId", ccp.Code AS "ParentCode", ccc.Code AS "ChildCode" FROM CatalogueComponent ccp INNER JOIN CatalogueComponent ccc ON ccp.ComponentId = ccc.ParentComponentId WHERE ccc.ComponentId IN (20934777, 1594747)
I'm sending also the 2 output of PLAN results from 2 different schemas.
what should I do to fix the problem with the NAFBCA schema.
SELECT DISTINCT PATIENT_ID , ( SELECT ROWNUM,APPOINTMENT_ID FROM AppointmentDetailsHistory WHERE APPOINTMENT_STATUS_ID = 2 AND VISIT_TYPE_ID NOT IN (7) AND PATIENT_ID = ADH.PATIENT_ID
[code]...
MY SELECT query failing actually i am trying to convert sql server select into oracle.My sql server query is like this.
SELECT DISTINCT PATIENT_ID , ( SELECT TOP 1 APPOINTMENT_ID FROM EMRAppointmentDetailsHistory WHERE APPOINTMENT_STATUS_ID = 2 AND VISIT_TYPE_ID NOT IN (7) AND PATIENT_ID = ADH.PATIENT_ID ORDER BY PATIENT_ID, LAST_UPDATED_DATE ASC) AS FIRST_APPOINTMENT FROM EMRAppointmentDetailsHistory ADH WHERE ADH.APPOINTMENT_STATUS_ID = 2 AND ADH.VISIT_TYPE_ID NOT IN (7)
We're using Oracle 10g for development purposes.I have 2 same schemas with approximately same data.I'm running same query on 2 schemas and I see that the first schema runs the query around 20sec and the 2.schema less than 1 sec. I thoughtfirst that there may be missing constraints or indexes but all are the same.I checked the plan for the 2 schemas and I see that the plan is different.
Here is the query: SELECT ccc.ComponentId AS "ComponentId", ccp.Code AS "ParentCode", ccc.Code AS "ChildCode" FROM CatalogueComponent ccp INNER JOIN CatalogueComponent ccc ON ccp.ComponentId = ccc.ParentComponentId WHERE ccc.ComponentId IN (20934777, 1594747)
I'm sending also the 2 output of PLAN results from 2 different schemas.
write a query to get the first row after order by clause using single query alone.Example:I can write following query to select first rowselect * from (selec * from t order by col1) where rownum = 1;But here I should not use inline view to get the result. Because my original requirement needs to use this query in select list and it needs to use a column (of a table from the FROM clause) in the where clause of inline query. Because there is restriction that we can not use the column (of a table from the FROM clause) more than one level of inline query.
I have created two types and a list of the first type:
create type type1; / create type type1_list as table of ref type1; / create type type2; /
I have now just created the two types as follows:
create type type1 as object( id# number ); / create type type2 as object( attribute1 type1_list, MEMBER FUNCTION function1 RETURN NUMBER ); /
Ok, I've created the tables (I don't know if it's necessary to point out my problem)
CREATE TABLE type1_table OF type1; / CREATE TABLE type2_table OF type2 NESTED TABLE attribute1 STORE AS nested_type1_list_table; /
And what I wanted to do now is to implement the member function1 and check something of the attributes of type1 in the list of attribute1... And that's where my question occurs, how does it work, I can't figure it out. I tried something like this:
Quote: create or replace TYPE BODY type2 AS MEMBER FUNCTION function1 RETURN NUMBER AS
