SQL & PL/SQL :: Querying Same Field In A Table Twice
Jul 5, 2012
I am trying to subtract the time from where status = Delivered from the status = Picked Up. All the data is in the same table. Let's call it table1 and I want to return the values: PTN, NAME and the time difference. Is this possible to do?
PTN NAME DATE STATUS
11014419 Joe Dickson 2012-06-25 14:55:58 Delivered
11014419 Mike Draia 2012-06-25 14:28:17 Loaded
11014419 Bob Geber 2012-06-25 13:14:31 Received
11014419 Bob Geber 2012-06-25 13:14:31 Picked Up
11014419 Bob Geber 2012-06-25 13:14:31 Printed
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Apr 21, 2012
I have flattened customer dimension table and I would like to query it with other dimension table like address. I write a query, where I join address table twice to get permanent, secondary, and work addresses, but customer and address tables are huge that causing performance issue. Is any other ways to join flatten table with address dimensions than join it twice.
CREATE TABLE CUSTOMER
(
cust_sk NUMBER NOT NULL ,
cust_src_id VARCHAR2(20) NOT NULL ,
rec_eff_dt DATE NOT NULL ,
last_name VARCHAR2(75) NULL ,
first_name VARCHAR2(30) NULL
brth_dt DATE NULL ,
[code]......
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Apr 16, 2013
I successfully created the following DBLink in my DEV environment:
CREATE PUBLIC DATABASE LINK PROD
CONNECT TO USER1 IDENTIFIED BY pwd98
USING 'PRD';
I have a table in both schemas. In PROD it has 0 recs, in DEV it has 134 recs.
select count(*) from hold@PROD.
The above query gives me 134 recs instead of 0!
Here is my TNSNAMES entry for PRD:
PRD=
(DESCRIPTION=
(ADDRESS=
(PROTOCOL=TCP)
(HOST=localhost)
(PORT=1529)
)
(CONNECT_DATA=
(SERVER=dedicated)
(SERVICE_NAME=PRD_USR)
))
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Aug 14, 2012
We are using oracle database 11g R2 on REL 5 and i have an SQL server database used by one of our application. In my Oracle database, i want to query one table in my SQL server database and to link it in a table in Oracle database to compare data.
Is there a way like database link or something else to do this need. Send a link or pots here step by step the way on how to accomplish my query.
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Oct 9, 2013
I have table with 129 million records.
If I just to select count(*) on the table its taking more than a minute in Sql Developer.
The table structure is as below, Primary key is a sequence and then 3 foriegn keys and one non-unique index on the date column.
<Table_Name>
column1 NOT NULL NUMBER ( Primary Key)
column2 NOT NULL NUMBER ( FK1)
[Code].....
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Nov 11, 2012
The Item data for individual cycles is as below.
Item_tbl
ItemRundate StddateStatus
P103-Nov-1203-Nov-12A
P104-Nov-1204-Nov-12D
P2 04-Nov-1203-Nov-12A
The requirement is I have to get the details of all data of previous Active cycle(status A) when the Item became disabled(status = D) for Input date.
In above case,since for Item P1 and on cycle date 04-Nov-12,status is D,I have to consider the previous active cycle which is 03-Nov-12. Based on above std date,the data is queried from another table to get all the Items. Item P2 should not be considered in above case.
Below is the code which I have written which considers the rundate as Input parameter.
-- To get the Items disabled for Input date
with Itemdisabled as
(
select item,stddate maxcycledate
from Item_tbl
where rundate = stddate
[code]....
In above case,I'm querying the Item_tbl twice once for getting the disabled Items and once for getting the Previous cycle which is active.
Is there any way to query above only once and get the required results using Lag/Lead functions etc.
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Nov 14, 2011
I have a table called Customer_Type with following fields
Customer_type ,Active_date, Inactive_date
regular,11/01/2011
daily,11/04/2011
monthly,11/05/2011/11/11/2011
Tbale 2:Customer
Customer_name,Customer_type,Customer_Inactive_date
John,regular,
James,monthly,
Jake,daily,
Jill,monthly
What i wnat is to update the Customer_inactive_date with the Incative_date field from Customer_type based on their Customer_type... So james and Jill would have their rows updated in this scneario ..How can i achive this in pl/Sql
I have teh code using merge function..I want something in traditional old fashion..
The sql statements are below
CREATE TABLE CUSTOMER_TYPE
(
type_code VARCHAR2(10),
[Code]....
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May 20, 2010
I have the following 3 columns in my VERSIONS table.
MAJOR
MINOR
MICRO
The MAJOR,MINOR and MICRO columns create a unique composite primary key. I need to query out the last version by doing the following 3 queries and combine them.
select max(major) as max_major from versions
select max(minor) as max_minor from versions where major = :max_major
select max(micro) as max_micro from versions where minor = max_minor and major = max_major
Is there any way I can query out max(major),max(minor),max(micro) in a single query.
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Jan 15, 2013
I'm having truble by querying a column in Oracle 10g. This is my situation I wrote a standard Oracle Query to show only the domain name of user's registration. The column's alias is called MAILS so far so good, the main problem is when I tried to shortener the result to show only Gmail, Hotmail and Yahoo.
Also I had the same issue when I tried to use GROUP BY the field "MAILS", but when I use the order by clause with that field it run perfectly. I think a test case is not necesarry because there are common mails address.
SELECT
SUBSTR(SUBSTR(mail,INSTR(mail,'@',1)+1,50),1,
INSTR(SUBSTR(mail,INSTR(mail,'@',1)+2,50),'.',1)) "MAILS",
COUNT(SUBSTR(SUBSTR(mail,INSTR(mail,'@',1)+1,50),1,
INSTR(SUBSTR(mail,INSTR(mail,'@',1)+2,50),'.',1))) "TOTAL"
FROM USER_REGISTRATION
WHERE TRUNC(FECHAALTA) BETWEEN TRUNC(TO_DATE('01/01/2012','DD/MM/YYYY')) AND TRUNC(TO_DATE('31/12/2012','DD/MM/YYYY'))
GROUP BY SUBSTR(SUBSTR(mail,INSTR(mail,'@',1)+1,50),1,
INSTR(SUBSTR(mail,INSTR(mail,'@',1)+2,50),'.',1))
ORDER BY MAILS DESC;
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Feb 2, 2011
I have a temporary table (with on commit preserve rows property) which is populated thru insert into command from a procedure. After which, i need to query the records from the populated temp table.
However, my query returns nothing. My procedure works fine cause i tried executing it to populate a regular table and it is ok. However, it shows no output in the temp table cause probably it is creating another session. How do i select the rows from the temp table after populating it from a procedure.
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Aug 23, 2007
SELECT * FROM table WHERE id = $x
$x being a range of non-consecutive values like so:
1,3,5-9,13,18,21 and so on...
I realize I can query using an array of operands and such, but these ranges will be in upwards of 100 or more items. I want to minimize the number of queries I have to do and the length of them. Is there any resource you can point me to that can optimize something like this?
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Mar 17, 2011
I have a CLOB column called XML_DATA that has (not-surprisingly) xml data in it that's housed inside a table called HMS_XML_TRANSFER. It has been giving me a headache because I'm unable at this point to use the xml field as a condition to get its TRANS_SEQUENCE number. The where clause doesn't work.
SELECT TRANS_SEQUENCE, XML_DATA
FROM HMS_XML_TRANSFER
WHERE EXTRACTVALUE(XMLTYPE (XML_DATA), '/INTERFACES/INTERFACE/BODY/IFI0057[ACTIVITY_CODE = "2201-020742"]');
The only test that I have been able to get working is the one below.
SELECT TRANS_SEQUENCE, EXTRACTVALUE(XMLTYPE (XML_DATA), '/INTERFACES/INTERFACE/BODY/IFI0057/ACTIVITY_CODE')
FROM HMS_XML_TRANSFER
WHERE TRANS_SEQUENCE = '8191602';
It will give me the ACTIVITY_CODE element so I know I can pull data from the XML but I can't do the reverse in the first example which is what I need because I don't know the TRANS_SEQUENCE number, I just know the ACTIVITY_CODE.
I have over 202 error messages logged in Teradata SQL from my many and varied attempts to get this to work using every example I could find online.
As an example this has not worked either...
WHERE EXISTNODE(XML_DATA, '/INTERFACES/INTERFACE/BODY/IFI0057[ACTIVITY_CODE = "2201-020742"]') = 1;
So the question... How do I properly form my SQL statement so I can use the XML column's ACTIVITY_CODE element to get the TRANS_SEQUENCE column field? Oh and I'd like to see both columns in the result.
Below is the version of Oracle I'm using, the description of the Table HMS_XML_TRANSFER, and a sample of the XML that comes from XML_DATA. I can't seems to get tabs working.
===============
ORACLE VERSION
===============
SQL*Plus: Release 9.0.1.3.0 - Production on Thu Mar 17 08:18:15 2011
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
=========================
TABLE HMS_XML_TRANSFER
=========================
Name Null? Type
--------------- --------- --------------
TRANS_TYPE NOT NULL VARCHAR2(10)
DATE_IN NOT NULL DATE
DATE_PROCESSED DATE
STATUS VARCHAR2(8)
[code]....
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Apr 24, 2012
I am inserting data into a global temporary table and then using 'parallel' hint to query from this temporary table. I remember reading that the queries on the temp table may not run in parallel as the parallel sessions may not be able to see the data in the temporary table
However the execution plan as well as px_session, v$sql indicate that the query on the temporary table in fact run in parallel mode
select * from table(dbms_xplan.display_cursor(null,null,'ALLSTATS LAST'));
PLAN_TABLE_OUTPUT
-----------------------------------------------------------------------------------------------------------------------
SQL_ID 7d68g52g0mskz, child number 0
-------------------------------------
select /*+ gather_plan_statistics parallel(t,4) */ * from dbo_gtt t order by id,object_id
Plan hash value: 5815349
--------------------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Starts | E-Rows | A-Rows | A-Time | Buffers | OMem | 1Mem | Used-Mem |Used-Tmp|
--------------------------------------------------------------------------------------------------------------------------
| 1 | PX COORDINATOR | | 1 | | 99999 |00:00:01.46 | 3 | | | |
|
| 2 | PX SEND QC (ORDER) | :TQ10001 | 0 | 1 | 0 |00:00:00.01 | 0 | | | |
|
| 3 | SORT ORDER BY | | 0 | 1 | 0 |00:00:00.01 | 0 | 11M| 1311K| 424K (0)|
|
| 4 | PX RECEIVE | | 0 | 1 | 0 |00:00:00.01 | 0 | | | |
|
| 5 | PX SEND RANGE | :TQ10000 | 0 | 1 | 0 |00:00:00.01 | 0 | | | |
|
| 6 | PX BLOCK ITERATOR | | 0 | 1 | 0 |00:00:00.01 | 0 | | | |
|
|* 7 | TABLE ACCESS FULL| DBO_GTT | 0 | 1 | 0 |00:00:00.01 | 0 | | | |
|
--------------------------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
7 - access(:Z>=:Z AND :Z<=:Z)
select px_servers_executions from v$sql where sql_text like 'select%dbo_gtt t%';
PX_SERVERS_EXECUTIONS
---------------------
0
4
select sid, qcsid, server#, degree from v$px_session where qcsid = 228;
SID QCSID SERVER# DEGREE
---------- ---------- ---------- ----------
247 228 1 4
196 228 2 4
224 228 3 4
234 228 4 4
226 228 1 4
252 228 2 4
212 228 3 4
229 228 4 4
228 228
9 rows selected.
unfortunately I do not have access to get trace (tkprof) report. What must have happened during the execution?
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Nov 14, 2011
I am using SQL Developer.I am self-teaching myself PL/SQL. What I am trying accomplish is to run a select query across many database links at runtime and to insert that query onto a local table. So far, I have only gotten as far as querying the database link names. I am stuck at where my variable calls the database link name. It does not recognize the database link name, and I can't quite grasp the reason why. Below is the first part of my script which does retrieves the column values no problem:
001 SET SERVEROUTPUT ON
002 DECLARE
003 db_link_varVARCHAR2(30);
004 source_cursorINTEGER;
005 destination_cursorINTEGER;
006 src_csrINTEGER;
007 dst_csrINTEGER;
008 rundate_varDATE;
009 instance_name_var VARCHAR2(30);
[code]....
If I break the script down to the bare select query, it will query absolutely fine.If I run the script in its entirety, it will not pick up the variable dbl as a dynamic database link. 02019. 00000 - "connection description for remote database not found"
If I comment out line 031 and prevent the looping of querying of database links (which will only fetch the first value of db_link from dba_db_links), the script will complete and I will have a row inserted into my local table.
I am suspecting it's the looping that is incorrect but I understand it is not going to do anything beyond line 059.
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Apr 16, 2012
I have a table in Oracle with a column userid and i have a userid column in Active Directory. based on this i want to query the Network ID and update in one of the Group in the Active Directory. how to get the results?
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Oct 14, 2013
Our company database is Oracle based and we use SQL Developer to pull out needed data.Using a snippet borrowed from a co-worker, I have put together a query that, among other things, pulls a list value out of an xml clob field and displays it in the query results. My query as it stands right now is below, followed by an example snippet of the xml clob that I am pulling from. The reason for the "query within a query" is because the base query could return multiple entries and I only want the one with the most recent date.
select * from
(Select Wtr_Service_Tag, Wtr_Tran_Origin, Wtr_Send_Date, Wtr_Receive_Date,
to_char(substr(wtr_req_xml,instr(substr(wtr_req_xml,1,8000),'SID')+8,12)) Asset_Tag
from ws_transactions
Where Wtr_Service_Tag In ('20458749610')
And Wtr_Req_Xml Like ('%CSM%')
Order By Wtr_Receive_Date Desc)
where rownum = 1;
[code]....
This query is only able to pull the first value in the list.How can I edit this query to pull all of the list items when there are more than 1 (preferably concatenated into one column in the query results)? I have another field, in a separate table, that I can pull from to get the number of list items.
This one may be more complex. As currently written, the query pulls a fixed number of characters from the xml clob and either returns not enough data, or too much because the values I need to pull could be of varying lengths. I have no way to query what those lengths might be.
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Feb 10, 2012
We have a table with huge data which is skewed on a 'status' column. The 'status' column has 6 distinct values with 1 particular value occupying 80-85% records.
In the batch process we query the data on the status and process the retrieved records. My senior is insisting on partitioning which I see not much feasible considering cost implications just for a part of functionality
See there are 6 status 'A','B','C','D','E','F'
with 'A' occupying 80% records
'B' to 'F' occupies 2% till 14% records in the table(approx)
1) Create a conditional index on status (using case) to have records with all statuses except 'A' Then create If-ELSE structure
IF input parameter is 'A'
select /*+ FULL Parallel(t) */ * from t where status='A';
ELSE
Select /*+ INDEX (t conditional_index) */ * from t where status in ('B','C');
END IF;
I want to create conditional index here for 2 reasons
1] since it will have values for status except 'A' this nullify the chance that this index will be picked up when status='A' will be queried
Thus making the performance worst (status ='A' is for 80% records) - The IF-ELSE is additional protection
2] Less impact on the DMLS as the index will not be on status='A' which contribute to large chunk of records
2)Populate a dummy table which would contain rowid and status. Since the business closes at 21:00 and batch process starts at 21:30
Between these times periods refresh the dummy table every day using merge (to catch business transactions during the day)
Now during the batch process retrieve records from the main table using the rowids in the dummy table depending on the input status value
3)Create index on status
Make sure hard coded status values are used in the database procedures
Gather stats with the histograms
And leave it to the Optimizer to choose the best possible path
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Nov 27, 2012
I am trying to fetch the data from system table "FLOWS_020100.WWV_FLOW_ACTIVITY_LOG1$" in Oracle Express edition 10.2.0.3 database, using the OCI library on Windows with C++
This table has a TIMESTAMP column of date type.
I've the following query as below:
select TIME_STAMP from FLOWS_020100.WWV_FLOW_ACTIVITY_LOG1$ where TIME_STAMP > to_date('31/OCT/12 23:59:59', 'DD-MON-YY HH24:MI:SS') order by TIME_STAMP asc;
For this, first I am preparing the query as below:
select TIME_STAMP from FLOWS_020100.WWV_FLOW_ACTIVITY_LOG1$ where TIME_STAMP > :PKVAL order by TIME_STAMP asc;
Before calling OCIExecute(), I am setting the PKVAL buffer to following value:
"to_date('31/OCT/12 23:59:59', 'DD-MON-YY HH24:MI:SS') "
& calling the OCIBindByName function with data type as SQLT_DATE.
But when the OCIExecute is called, my program crashes with access violation
what is the correct way to pass the date value in query to OCI? How do we bind the date values?
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Mar 28, 2011
I'm trying to update a field from another field in the same table.
I got a Table with 3 fields.
CREATE TABLE CONTENT
( LID_id NUMBER(6,0) NOT NULL ENABLE,
LPRECIS VARCHAR2(4000 CHAR),
LCOMMENT VARCHAR2(4000 CHAR)
)
How to update "LPRECIS" from "lCOMMENT" only where "LPRECIS" is NULL ?I used this statement but it's wrong.
UPDATE CONTENT
SET LPRECIS=(SELECT LCOMMENT
FROM CONTENT
WHERE LPRECIS IS NULL)
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Mar 26, 2013
I have installed unixodbc 2.3.1, postgres odbc driver (psqlodbc-07.03) and dg4odbc 11.2..On querying : select sysdate from dual@dblink_postgresql, the following error occurs:
ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
[unixODBC][Driver Manager]Can't open lib '/oracle/psqlodbc/lib/libpsqlodbc.a' : file not found {01000}
ORA-02063: preceding 2 lines from DBLINK_POSTGRES
Similar error appears in the trace file as well.
[unixODBC][Driver Manager]Can't open lib '/oracle/psqlodbc/lib/libpsqlodbc.a'
$ isql -v postgresql postgres postgres@2012
[01000][unixODBC][Driver Manager]Can't open lib '/oracle/psqlodbc/lib/libpsqlodbc.a' : file not found
[ISQL]ERROR: Could not SQLConnect
However the file is present in the location and has no permission related problems.
$ pwd
/oracle/psqlodbc/lib
$ ls -lrt
total 2952
-rwxr-xr-x 1 oracle oinstall 663 Mar 25 15:28 psqlodbc.la
-rw-r--r-- 1 oracle oinstall 731419 Mar 25 15:28 libpsqlodbc.a
-rw-r--r-- 1 oracle oinstall 12215 Mar 25 22:11 win_md5.o
-rw-r--r-- 1 oracle oinstall 18100 Mar 25 22:11 options.o
[code]....
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Dec 27, 2006
We have a table with several columns (id, title, description, area).The data in the table looks like this
1 sometitle1 description1 USA
2 sometitle2 description2 Germany
3 sometitle3 description3 Japan
4 sometitle4 description4 Honduras
We have Oracle users with their usernames and password. We would like to lock every single user to a certain area.Example:
user 1 may see only records, where AREA=USA
user 2 may see only records, where AREA=Honduras
How can I do this in Oracle. I am using Oracle Enterprise 9.2
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Nov 27, 2012
I have partitioned the table based on field.But when I am selecting by Partition or by the field I am getting Explain plan as Table Access full.I am pasting the sql and Explain Plan here. The table has two partition by BOOKING_DT_WID. One less than 20100801 and other less than 99991231.
CODESELECT * FROM WC_BOOKING_SALESREP_F WHERE BOOKING_DT_WID >= 20100801;
SELECT * FROM WC_BOOKING_SALESREP_F PARTITION(SALESREP_LESS1_99991231);
Here is the Explain Plan for the same.
CODESELECT STATEMENT ALL_ROWSCost: 1,501 Bytes: 293,923,641 Cardinality: 809,707
4 PX COORDINATOR
[code]....
How do I know if the sql is doing partition prune.
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Aug 20, 2012
select the rows from a table with the same particular field in PL/SQL. Actually I don't want to write two loops one inserted into another.
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May 31, 2012
What I need to do is redirect an insert to another table when a field has some value. This is what I have:
CREATE TABLE TEST.TEAMS
(
NAME VARCHAR2(255 CHAR),
[Code]....
This is the result when I try to insert a record
INSERT INTO TEST.TEAMS ( NAME, LOCATION, PLACE ) VALUES (
'Belgrano', 'Cordoba', 1);
ORA-04091: table TEST.TEAMS is mutating, trigger/function may not see it
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Sep 19, 2011
I need to copy records from a working table to a history table. I have the following sql statement
insert into test.history
(equip_ID, state, manufacturer, install_year, capacity,
group_ID, Test_status)
select (equip_ID, state, manufacturer, install_year, capacity,
group_ID, Test_status
from test.info_AP
Table test.history has one more field in it called test_year. I need to fill this field when I do the insert. Can't use an after update trigger as the field is currently set to not allow nulls.
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Sep 25, 2012
query to get the name and size of all the databases associated to grid..
I need to find this to do capacity planning in our environment.
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Oct 5, 2010
i have a table COLOR having alphanumeric fields i.e Color Description & Color Ref. i want to copy the values from Color Description to Color Ref.
what will the select statement for this?
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Feb 1, 2013
I have three tables.
One for projects, one for volunteers, and a bridge entity for the many to many relationship between the Project and Volunteer.
In Project table, I have a field called, Volunteers_currently_signed_up, which means the number of volunteers currently signed up to participate in a project.
When I add an entry to my bridge entity which is composed of Volunteer_ID and Project_ID, I want the Volunteers_currently_signed_up to increment by 1, where the Project_ID in the bridge entity corresponds to that in Project.
I have very very little PL/SQL, and this is my amateur attempt so far:
CREATE OR REPLACE trigger "BI_Volunteers_currently_signed_up"
BEFORE INSERT OR UPDATE ON Volunteers_in_project
for each row
WHERE Volunteers_in_project.Project_ID=Project.Project_ID;
begin
Project.Volunteers_currently_signed_up += 1;
end;
/
write a trigger that achieves the above
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Dec 13, 2011
I have uploaded some tables from MS Access to Oracle and in the process, some Number fields have been converted to Text. This means that any Queries where there are calculations with those fields (which have been converted to text) don't work properly anymore.
I would like to change the field type from text to number (with cmd and sqlplus) as that's the only way I can access the oracle backend.
I am not sure what commands to use to change this.
Also, if I change the data type from text to number, is it likely I will lose some data?
And how do I backup the table before I do this?
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May 9, 2013
i have a field in my table office i got field office_code ,this field is been used in diffirent tables as foreign key is there a sql i can wirte to see all tables who have used this field as foreign key.
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