I have a requirement like getting list of values from one table and inserting them into another table.I have tried with sub querying but didn't worked out because the select query is returning multiple values.
how to proceed further and the ways how can I write this requirement.
SELECT wmsys.wm_concat (gp.prog_acronym) FROM inf_program gp, ea_audit_program ap WHERE ap.sys_prog_id = gp.sys_prog_id AND ap.sys_audit_id =484
is there any way I can check the datatype of the result of the above query ? ,my dba added some patch to oracle , after the patch this query is returning a clob in java , it should return string and it used to return string before patch and in other databases it returns string, I can check the return type only from java side , is there any way oracle can say me the datatype ?
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.
I want to run below query to get the result set that I am after. But It takes long time even with the indexes...Here in IM_Mapping table is having 1.7 mio records and T_Extract table about 35000 records. All the other tables having below 1000 records
I need to write a query which will get me output: 233445, i.e. all the three rows concatenated. How can it be done? I want to do it through sql only and not to use PL/SQL. Is this possible?
I have a sql query which fetch the data from 4 different tables. I want to write the output of that query into a excel or a CSV file without using TOad and all. Let me know is it possible via creating function or procedure.
I have a strange problem with query with like and %.
When I run this script:
ALTER SESSION SET NLS_SORT = 'BINARY_CI'; ALTER SESSION SET NLS_COMP = 'LINGUISTIC'; -- drop table test1; CREATE TABLE TEST1(K1 NVARCHAR2(80)); INSERT INTO TEST1 VALUES ('gsdk');
When i change datatype in column to varchar2 this code work correct.
The execution plan:
PLAN_TABLE_OUTPUT SQL_ID d3d64aupz4bb5, child number 2 select * from TEST1 where k1 like N'Ł%' Plan hash value: 4122059633 Id Operation Name Rows Bytes Cost (%CPU) Time 0 SELECT STATEMENT 2 (100) * 1 TABLE ACCESS FULL TEST1 1 82 2 (0) 00:00:01
I have a strange problem with query with like and %.
When I run this script:
ALTER SESSION SET NLS_SORT = 'BINARY_CI'; ALTER SESSION SET NLS_COMP = 'LINGUISTIC'; -- SELECT * FROM NLS_SESSION_PARAMETERS; -- drop table test1; CREATE TABLE TEST1(K1 NVARCHAR2(80));
[code]....
When i change datatype to varchar2 this code work correct.
The execution plan:
PLAN_TABLE_OUTPUT ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SQL_ID d3d64aupz4bb5, child number 2 ------------------------------------- select * from TEST1 where k1 like N'Ł%'
[code]....
Note - dynamic sampling used for this statement (level=2)
Is there any way to Create Form in which i give a query and in result it return the query result in detail block in form of fields just like we return in toad or pl/sql developer.
me in building a query. I want to show the result of the query just like pivot table. Test case CREATE TABLE CPF_YEAR_PAYCODE ( CPF_NO NUMBER(5), INC_DATE DATE, PAYCODE_TYPE CHAR(1 BYTE),
[code]...
I want that my query should look like the format as attached in the xls sheet.
My problem is I have 3 tables (TEST_TBL1, TEST_TBL2, TEST_TBL3). TEST_TBL2 and TEST_TBL3 are in remote database and I use database link to join them. The following query returns incorrect result (I seems that it ignore the where clause)
SELECT * FROM TEST_TBL1 JOIN TEST_TBL2@db_remote USING (KEY1) JOIN TEST_TBL3@db_remote USING (KEY2) WHERE KEY1=XXX OR KEY2=YYY;
I am on 11R1 (11.1.0.7)
FOR EXAMPLE:
Local database: CREATE TABLE TEST_TBL1 ( KEY1 NUMBER(5) NOT NULL,
In Oracle 11g/R2, I created replica of HR.Employees table & executed the following statement (+Although using SUM() function is non-logical in this case, but just testifying the result+)
STEP - 1
SELECT /+ RESULT_CACHE */ employee_id, first_name, last_name, SUM(salary)* FROM HR.Employees_copy WHERE department_id = 20 GROUP BY employee_id, first_name, last_name;
EMPLOYEE_ID FIRST_NAME LAST_NAME SUM(SALARY) ------------------------------------------------------------------------------------------------------- 202 Pat Fay 6000 201 Michael Hartstein 13000
Elapsed: 00:00:00.01
Execution Plan ---------------------------------------------------------- Plan hash value: 3837552314 -------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | -------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 2 | 130 | 4 (25)| 00:00:01 | | 1 | RESULT CACHE | 3acbj133x8qkq8f8m7zm0br3mu | | | | | | 2 | HASH GROUP BY | | 2 | 130 | 4 (25)| 00:00:01 | |* 3 | TABLE ACCESS FULL | EMPLOYEES_COPY | 2 | 130 | 3 (0)| 00:00:01 |
Statistics ---------------------------------------------------------- 0 recursive calls 0 db block gets 0 consistent gets 0 physical reads 0 redo size *690* bytes sent via SQL*Net to client 416 bytes received via SQL*Net from client 2 SQL*Net roundtrips to/from client 0 sorts (memory) 0 sorts (disk) 2 rows processed
STEP - 2
INSERT INTO HR.employees_copy VALUES(200, 'Dummy', 'User','Dummy.User@email.com',NULL, sysdate, 'MANAGER',5000, NULL,NULL,20);
STEP - 3
SELECT /*+ RESULT_CACHE */ employee_id, first_name, last_name, SUM(salary) FROM HR.Employees_copy WHERE department_id = 20 GROUP BY employee_id, first_name, last_name;
EMPLOYEE_ID FIRST_NAME LAST_NAME SUM(SALARY) -------------------------------------------------------------------------------------------------- 202 Pat Fay 6000 201 Michael Hartstein 13000 200 Dummy User 5000
Elapsed: 00:00:00.03
Execution Plan ---------------------------------------------------------- Plan hash value: 3837552314
Statistics ---------------------------------------------------------- 0 recursive calls 0 db block gets 4 consistent gets 0 physical reads 0 redo size *714* bytes sent via SQL*Net to client 416 bytes received via SQL*Net from client 2 SQL*Net roundtrips to/from client 0 sorts (memory) 0 sorts (disk) 3 rows processed
In the execution plan of STEP-3, against ID-1 the operation RESULT CACHE is shown which shows the result has been retrieved directly from Result cache. Does this mean that Oracle Server has Incrementally Retrieved the resultset?
Because, before the execution of STEP-2, the cache contained only 2 records. Then 1 record was inserted but after STEP-3, a total of 3 records was returned from cache. Does this mean that newly inserted row is retrieved from database and merged to the cached result of STEP-1?
If Oracle server has incrementally retrieved and merged newly inserted record, what mechanism is being used by the Oracle to do so?
I am unable to insert the result set of query into corresponding SQL Table type variable where as same functionality can be accomplished by PL/SQL table type variable. Can't we access the same by using SQL type variable?
Ex:
Step 1:
SQL Object type , Table type Objects creation : drop type sql_emp_tab_type ; drop type sql_emp_type ; create or replace type sql_emp_type as object ( empno number, ename varchar2(20),
[code]...
Step 2: Accessing the table type object from PL/SQL block