SQL & PL/SQL :: Describe Results / Define Output And Fetch Rows Of A Query
Jun 2, 2010
There are several stages for sql processing in 10g2 database concept document.The following stages are necessary for each type of statement processing:
■ Stage 1: Create a Cursor
■ Stage 2: Parse the Statement
■ Stage 5: Bind Any Variables
■ Stage 7: Run the Statement
■ Stage 9: Close the Cursor
Optionally, you can include another stage:
■ Stage 6: Parallelize the Statement
Queries (SELECTs) require several additional stages, as shown in Figure 241:
■ Stage 3: Describe Results of a Query
■ Stage 4: Define Output of a Query
■ Stage 8: Fetch Rows of a Query
Stage 3: Describe Results of a Query The describe stage is necessary only if the characteristics of a query's result are not known; for example, when a query is entered interactively by a user. In this case, the describe stage determines the characteristics (datatypes, lengths, and names) of a query's result.
Stage 4: Define Output of a Query In the define stage for queries, you specify the location, size, and datatype of variables defined to receive each fetched value. These variables are called define variables. Oracle performs datatype conversion if necessary.
I still don't understand what's Stage 3: Describe Results of a Query and Stage 4: Define Output of a Query.
FRM-40501: ORACLE error: unable to reserve record for update or delete.
ORA-24374: define not done before fetch or execute and fetch
My master-detail form has single canvas. For both blocks, master and detail, two tables joined together in each. One table to be updated, second table has some info for reference (query only).
I am getting these errors when in detail block the item from LOV is selected for existing record. This does not happen for new record inserted in detail block.
I have an application connected to Oracle 11g that sends its own querys to the db based on what the user is clickng on. The applicaiton is connected via one user id and I was wondering, is there a way that I can capture the tiem each query starts, the sql itself, and the amount of time it took to fetch the data?
I need each different ACC_ID with ACC_AMT in different columns. The table may have other different ACC_ID also, but I will fetch only what I need. What is the best way to do this?
So far I have tried this:
SELECT (CASE WHEN ACC_ID=111 THEN ACC_ID END) AS ACC_ID_1, (CASE WHEN ACC_ID=111 THEN ACC_AMT END) AS ACC_AMT_1, (CASE WHEN ACC_ID=222 THEN ACC_ID END) AS ACC_ID_2, (CASE WHEN ACC_ID=222 THEN ACC_AMT END) AS ACC_AMT_2, (CASE WHEN ACC_ID=333 THEN ACC_ID END) AS ACC_ID_3, (CASE WHEN ACC_ID=333 THEN ACC_AMT END) AS ACC_AMT_3 FROM <TABLE_NAME>
Is it possible to define a cursor using dynamic sql. Reason being is, I want to fetch data from 4 diffrent tables but dont want 4 diffrent cursors for this purpose.
I have a procedure that takes an in parameter . Cursor is declared in this procedure. Again is there a way to use dynamic sql so that this cursor declared in procedure uses all 4 table one at a time i.e cursor c1 is select * from table_name(I want this table name to be updated every time with new table name).
how can i define the following condition in query definitions tab to define query condition for the value which is linked from previous tab/report ,:P2_SR_ BUSINESS_UNIT is the Item which are getting value from another report Value.
BUSINESS_UNIT=DECODE(:P2_SR_BUSINESS_UNIT,'BS&I','Business Sales And Information','WS','Whole Sale')
I am new in apex and havent had any chance to create a simple report.Version Application Express 4.1.1.00.23
Currently I have a requirement where I need to create 2 more output rows using each result row.
In my requirement I am populating charges table with types of charges, on each line item of charges, I need to apply 2 types of taxes and populate it along with the charge line item. I will be storing charges in table charges and the 2 taxes to be applied in taxes table respectively. For each row of charges, i need to apply these 2 taxes present in taxes table resulting in 3 rows output.
In Report it is possible to set the maximum rows to fetch to be a number e.g. 1+.Is it possible to use a number that is selected from another query? When I try to do this i.e. I put in the field num_lines or :num_lines I just get invalid number
I have a view and in that view i need to remove duplicate rows from output. For that i need to run select query in where clause of view if select query return true then we need to execute second condition.
my requirement in view like
And.......... And ((select count(*) from table A where conditions)=1 )then name is null AND
in that code first we need to check first select query condition then we need to apply name is null condition. but i tried to run it but select query not run properly. because tables is used in View.
select distinct event_number from events_total WHERE event_id = 16395493 minus select distinct event_number from event_details_ford WHERE event_id = 16395493
result of which is : 6L2Z-7861693-AAC 6L2Z-7862187-CAC
i want to put this in dynamic sql where clause :
where event_number in ('6L2Z-7861693-AAC','6L2Z-7862187-CAC'). and if the result of the query is only one number, then where event_number in (6L2Z-7861693-AAC) result of the query can be NULL also. but i think i can use IF condition for "SELECT ..WHERE event_number in " query
so how can i put the results of query in one line, so that i can use it in where clause.
create table emp1 (empno number,deptname varchar2(30),deptno number,sal number); insert into emp1 values (1,'Bank',10,1000); insert into emp1 values (1,'Finance',20,400); insert into emp1 values (2,'Finance',20,4000); insert into emp1 values (3,'Account',30,3000); commit; select * from emp1;
actual output :
empno deptname deptno sal 1 Bank 10 1000 1 Finane 20 400 2 Finane 20 4000 3 Account 30 3000
Expected output :
empno deptname deptno sal 1 Bank 10 1000 2 Finane 20 4000 3 Account 30 3000
I am looking a output like above one. if any empno belongs to deptname Bank then give priority to that values else go to other dept like Finance but empno 1 should return only one row.i.e Bank dept only.
I have to return only one row based on dept values for one empno. how to do in sql or plsql?
I have this query that returns results that contain duplicates(somewhat). I only want either the FIRST or LAST (either one is fine). Here is the query:
select unique PLLA.attribute4, PLA.item_description from po_lines_all PLA, po_line_locations_all PLLA where PLLA.po_line_id = PLA.po_line_id and PLLA.attribute4 is not null
So my output is something like this:
RCE12 This is an item for AUL1 RCE13 This is an item for PWEILL RCE14 This is an item for AUL1
I just want either the RCE12 or RCE14 record and not both since they both have the same description.
I am new to writing queries for an oracle database and I was giving a bit of challenge. Here's the situation. I have 3 tables I am using. 2 of the tables are being used to transpose people's names from rows to columns by account number (there are multiple people associated with each account). The last table is a pretty straight forward query. I can run each query by itself and I get the results I want. But when I try to compile the two together, I start getting a variety of errors. Below is the two queries:
Query 1 (returns about 1,500 rows): SELECT DISTINCT CAST (EIS_DW.ACCTCOMMONLOAN.ACCOUNT as VARCHAR(20)) as ACCOUNT_NUM, EIS_DW.ACCTCOMMONLOAN.ACCOUNT_STATUS, EIS_DW.ACCTCOMMONLOAN.MINOR_DESCRIPTION, EIS_DW.ACCTCOMMONLOAN.OWNER_NAME, [code]......
Ideally, I want to join these two queries on ACCOUNT and ACCTNBR. I have tried working my first query into my second query, but the best I get with that, is the 570 or so accounts, not all the accounts.
CREATE TABLE tmp_guid ( c1 raw(16) not null ,c2 raw(16) not null ); begin
[code]...
It seems that a combination of a unique index and extended stats are to blame. Removing any one of them causes the query to also produce correct results.Extended stats basically captures the fact that despite being unique, c1 depends on c2.
SELECT d_dtm, BTS_ID, CASE WHEN D_DTM = (D_DTM-24/24) THEN sum(V_ATT_CNT)
[Code]....
But it is not returning any results because of the "having" clause. I know it should return results because all I want it to do is in one column have the V_ATT for the current time period, and in the 2nd column, have the V_ATT 24 hours ago. I've checked the data and I should get results back but can't seem to figure out why this is not working...
I am to trying to fetch session id of a previously submitted process of a search button......so that i can display the search results in a different page.....so is there any sql query or pl/sql procedure to fetch the session id.
When I execute the query, it returns the data (approx - 40,000 rows) in 1 min.But when I try to insert this data into another table (or create a table of this data) it takes me about 2 hours.
Tried using Materialized view, its again the same the refresh takes 2 hours.Basically here, what I am trying to do is the data from the above query is used to update the values in another table.What ever the procedure I am trying it takes 2 hours.
I have a need to query a real time production database to return a set of results that spans a three day period. When the three days are consecutive it's easy but sometimes there is a 1 or two day gap between the days. For example I'm querying results from a group of people that work between Tuesday and Saturday. On a Wednesday I need t produce a set of results that spans Tuesday of the current week, and Saturday and Friday of the previous week; on Thursday I need to produce a set of results that that spans Wednesday and Tuesday of the current week and Saturday of the previous week.I'm using SQL Developer to execute the code.
I have 3 tables, Emp(Emp_id,emp_name),dept(dept_no,dept_name),emp_dept(emp_id,dept_no). Emp tabl ehas some 20 employes id who belongs to different departments.There are few employee who belongs to multiple departments as well. I want to fetch records of emp_id, emp_name, dept_no in the following format.
I got a issue with a query to fetch records between two dates for fixed timings
Date From 29-09-2011 to 04-10-2011 Time From 00:00:00hrs to 08:00:00hrs
I tried the below queries, it doesnt work select a.detectorid,sum(b.totalvolume),a.updatetime,a.averagespeed from traffic_data a left outer join volume_data b on a.traffic_id=b.traffic_data_id where pollinterval=1 and detectorid=�AIDC_0154� and updatetime between to_date(�29-aug-2011:00:00:00�,�DD-MON-YYYY:HH24:MI:SS�)
I need to fech parent records only when no child record with status 'N' exists. There are only two possible values for status column of child table 'Y' / 'N'.
Below are table structures and insert statements for data.
CREATE TABLE MASTER ( COL1 NUMBER,
[Code]....
COMMIT;Query I framed is below
select * from master where exists (select null from child where child.col2 = master.col1 group by child.col2 having count(distinct col3) =1 )
Output in above case would be 3 as for 1 there's one record with status as 'N' and for 2 there's no child record. I am on 10g.
