SQL & PL/SQL :: CREATE Table From Existing Tables
Oct 31, 2013
I have 2 tables that doesn't have primary keys. These 2 tables have same number of rows. I want to create a new table from getting some columns from table1 and some columns from table 2. I want to combine first row from table1 and first row from table2.
Below is example
TABLE1
ACOL1 ACOL2 ACOL3
A1 A2 A3
B1 B2 B3
C1 C2 C3
TABLE2
BCOL1 BCOL2 BCOL3
11 12 13
21 22 23
31 32 33
COMBINED_TABLE
ACOL1 BCOL2 BCOL3
A1 12 13
B1 22 23
C1 32 33
I tried below query but no luck. It gives below error:
Query : create table COMBINED_TABLE AS select a.ACOL1, b.BCOL2, b.BCOL3 from (select ACOL1,rownum from TABLE1) a, (select BCOL2, BCOL3, rownum from TABLE2) b WHERE a.rownum = b.rownum
Error : ORA-01747:"invalid user.table.column, table.column, or column specification"
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Aug 13, 2010
I need to create partition on the non partition table without dropping a table.
Range partition on stage tables and hash partition on fact tables.
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Sep 2, 2010
I want to create temp table, for this i am using:
CODEcreate global temporary table help_temp
as
select * from help;
but this is creating only the table structure, not copying the table data.
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Nov 9, 2010
problem on oracle 11gR2 where i have to import data from a source database to an existing table without truncate or drop the target table in the target database.
we have found something called table_exist_action=append in impdp.
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Apr 26, 2010
I would like to create a table in another schema(CBF) as already exist in my schema(TLC) without data but related indexes,synonyms and grants should be include.
How could I do this without using export import. I am using TOAD 9.0.1.
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Aug 30, 2007
I have a table with over 100000 records.
The format and data is something like this:
Region Code,Name,Surname,ID_Number
1,John,Doe,67
1,Sarah,Jason,45
2,Bob,Marley,69
3,Steven,Johnson,900
2,Harry,Potter,890
3,Sandy,Bay,567
3,Else,Taylor,789 .....
I have about over 100 region codes and each region would like to get their own data. I can manually do the extraction and create a new table for every region, but it's going to take too long.
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Nov 7, 2010
I would like to create a trigger on a table which populates a log table. In addition to using the table where the trigger will exist, I would like to populate a couple more fields in the log table with with data from 2 other tables.
e.g.
NAME_TABLE
-reg_id
-name
ADDRESS_TABLE *trigger to be fired when a new record is created here.
-reg_id
-srv_id
PROCESS_TABLE
-srv_id
-start_time
-end_time
This is what I would like the logging table to look like:
LOGGING_TABLE
-address_table_reg_id
-address_table.srv_id
-name_table.name
-process_table.start_time
-process_table.end_time
How can I go about creating this type of trigger?
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Apr 9, 2013
I would like to know how to create an associative array from an existing array plus some columns using other tables using a SQL query, bulk collect to a new array.
For example:
1. array 1 is created like select emp_no, emp_name, dept_no bulk collect into l_emp from emp;
2. array 2 needs to be created from array 1 along with the table department and the output should have all columns of array 1 plus dept_name, loc_no from department table.
3. I know this can be done using a simple join between 2 tables but for some reason I would like to create it as explained above.
4.i wanted them as associate arrays and not object collection.
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Jun 10, 2011
I have a form with fields like, UserName, User ID Email Address. This is used to create new users & edit existing user information. I wanted to make the Email field mandatory. So i made the email field as 'Required' via Proerty Pallette. So when ever i create new users after this change, i get a message saying 'Field must be required' when i try to skip this email field.
However when i edit existing user information and try to save the data with no email address i am able to save. So, where when i try to save a user info with no email address, i should get a warning saying 'email address is required'. How to go about it and if i wil have to create any trigger.
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Jan 20, 2011
Our Testing DB is running in No archive log mode. I did a schema level import by dropping the existing user that contain tables, recreate the user and finished the import. Now they want the old tables back.Is there is any way to recover the old tables?
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Dec 14, 2012
We have a table which is already partitioned by list and now we would like to add a subpartition.
Create table Item_mst
(
ccn varchar2(10),
Flag varchar2(1),
Item varchar2(10),
status varchar2(1)
)
[Code]..
Now I could like to alter the above table for adding a new subpartition on each partition on status.
ALTER TABLE Item_mst
MODIFY PARTITION Item_mst_Test
ADD SUBPARTITION Item_mst_Test_A VALUES ('A');
Above alter gives ORA-14253: table is not partitioned by composite range method.
However dropping and recreating the table with subpartitions is working fine.
But Dropping and recreating the table in production is very cumbersome as it has huge data and many indices.
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Jan 4, 2009
I am creating a table from another existing table in another schema. The existing table contains data. When I am using the query- create table m _voucher as select * from ipm.m_voucher,I am getting the whole data of m_voucher but I want empty m_voucher table, so what will be the query to get the empty m_voucher table?
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Apr 29, 2011
What is the difference between CREATE EXTERNAL TABLE Vs CREATE TABLE .?
Is CREATE EXTERNAL TABLE included in CREATE TABLE?
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Jul 20, 2012
How to add ROWDEPENDENCIES in an existing table. I mean How to Alter any table to add ROWDEPENDENCIES..
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Nov 30, 2011
We have a transaction table and has 30 million rows. The table is not partitioned till date. We need to create partition on this table. We had an idea of moving this data to a temporary table and create partition[range]on the original table and move the data back.
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Apr 24, 2012
I want to either UPDATE or add a new column with ROWNUMBER() OVER an column on a table
the output will shows like below
empID DeptNo New_column Start_Date
11 7778 1 01-02-2010
11 3400 202-06-2010
25 4444 103-02-2010
25 7775 204-07-2011
25 7777 305-02-2012
30 2223 109-02-2012
the forth one column is in date format and I want to update table with respect to order by the column start_date
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Nov 15, 2010
I need to get the timestamp for all the existing records in my table...I am having one user definition field, is this possible?
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Apr 1, 2013
Can we modifying the existing constraint on table?I have table level UNIQUE constraint on 3 columns of table.I need to modify the UNIQUE constraint to 2 columns? Instead of dropping/recreating the constraint, is there any option to modify the existing constraint
Ex
CREATE TABLE TEST_CONST(NUM1 NUMBER , NUM2 NUMBER , NUM3 NUMBER , UNIQUE (NUM1 ,NUM2,NUM3)); ;
SELECT * FROM USER_CONS_COLUMNS UCC WHERE UCC.TABLE_NAME LIKE 'TEST_CONST';
ALTER TABLE TEST_CONST MODIFY CONSTRAINT SYS_C0025132 UNIQUE(NUM1,NUM2);
ORA-00933: SQL command not properly ended
Third statement is not executing fine .
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Apr 3, 2012
I am abolute new in PL SQL and I am working on following topic:
I have to check if an entry exists in a table.
- if it exists ...... do something
- if not ...... simply go on
I tried the following:
select Count(*)from products p
where p.productNbr = temp_Nbr
Group By t.produkt;
I fetched the result into a variable entries
if entries > 0 .....
MY problem is the following:
If there are entries (entries>0) --> it works
If there are no entries, entries is not 0 but 'no data found' --> crash
I cannot work with Exceptions because this all happens in a Loop which must go on in both cases!
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Feb 20, 2012
I have table property and flat , in both of these tables I have cvp_id common colomn .Now I want to add cluster on this colomn so how can I add cluster to table which is already exists.
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Apr 22, 2013
declare
vnum number;
vname varchar2(50):='t1';
begin
begin
select count(*) into vnum from dba_tables where table_name=vname;
dbms_output.put_line('table count '||vnum);
exception
when others then
vnum := 0;
end;
begin
if vnum>0 then
execute immediate 'drop table '||vname;
dbms_output.put_line('table dropped');
end if;
exception
when others then
dbms_output.put_line('table does not exists');
end;
execute immediate 'create table '||vname ||' ( n number)';
dbms_output.put_line('table created');
end;
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Aug 1, 2013
Im having table which is of 45M rows table [Not partitioned], Now I want to compress the old data other than last 3Months data, I should not go for partition compress. Rarely some select queries will be fired on that Old data. Now how can I compress that table without affecting the Indexes , Dependencies proc, pkgs, Functions.
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit ProductionPL/SQL Release 11.2.0.3.0 - Production"CORE 11.2.0.3.0 Production"
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Dec 8, 2012
I had created a new table named USERLOG with two fields from a previous VIEW. The table already consist of about 9000 records. The two fields taken from the VIEW, i.e. weblog_views consist of IP (consists of IP address), and WEB_LINK (consists of URL). This is the code I used,
CREATE TABLE USERLOG
AS
SELECT C_IP, WEB_LINK FROM weblog_views;
I want to add another column to this table called the USER_ID, which would consists of a sequence starting with 1 to 9000 records to create a unique id for each existing rows. I'm using Oracle SQL Developer: ODMiner version 3.0.04. I tried using the AUTO-INCREMENT option,
ALTER TABLE USERLOG
ADD USER_ID INT UNSIGNED NOT NULL AUTO_INCREMENT;
But I get an error with this,
Error report:
SQL Error: ORA-01735: invalid ALTER TABLE option
01735. 00000 - "invalid ALTER TABLE option"
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Jan 23, 2011
I recently started working with legacy code and noticed that some huge tables (5 years worth of data, don't have more details on me right now but can post later if needed) are partitioned based on time sequence number column while majority of queries are done based on time (different column). Queries performance is degrading and I'd like to try to modify partitioning and run some tests to evaluate performance improvement.
My only concern is with so much live data I have to come up with solution on how to switch partitioning with the least impact on applications running 24 x 7. Something you have done in the same situation and it worked?
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Dec 8, 2012
I had created a new table named USERLOG with two fields from a previous VIEW. The table already consist of about 9000 records. The two fields taken from the VIEW, i.e. weblog_views consist of IP (consists of IP address), and WEB_LINK (consists of URL). This is the code I used,
CREATE TABLE USERLOG
AS
SELECT C_IP, WEB_LINK FROM weblog_views;
I want to add another column to this table called the USER_ID, which would consists of a sequence starting with 1 to 9000 records to create a unique id for each existing rows. I'm using Oracle SQL Developer: ODMiner version 3.0.04.
I tried using the AUTO-INCREMENT option,
ALTER TABLE USERLOG
ADD USER_ID INT UNSIGNED NOT NULL AUTO_INCREMENT;
But I get an error with this,
Error report:
SQL Error: ORA-01735: invalid ALTER TABLE option 01735. 00000 - "invalid ALTER TABLE option"
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Sep 6, 2010
below query.
1) How to add a new column to the existing table's particular position, instead of atlast.
2) I created a table without mentioned the datatype size as below Create table dummy (name char, age number). Then what is the default size will be allocated for those column's?
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Nov 29, 2012
it's possible to compress the existing table in oracle database directly.
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Mar 18, 2013
I have granted select privs on below tables to an exisiting user.grant select on WEB.ALMSTAT to nms...I would like to view the privs that i have granted to nms user?
*"In production, nms user will need the ability to read the following tables:*
*WEB.ALMSTAT*
*NET.ASSET*
*NET.LOCATIONNAME"*
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Jan 28, 2013
I am trying to partition an existing table through DBMS_REDEFNITION. Following are the steps that I have taken and the error I have got.
1. Creating a table to be partitioned.
CREATE TABLE SO33070_ORIGINAL
(
SERIAL_ID NUMBER(15,0),
INSERTED_TIME DATE DEFAULT SYSDATE,
PRIMARY KEY (SERIAL_ID)
);
Success
2. Checking if the table can be partitioned
DECLARE
v_name VARCHAR2(256);
BEGIN
SELECT sys_context('userenv', 'current_user') INTO v_name FROM dual;
DBMS_REDEFINITION.CAN_REDEF_TABLE(v_name, 'SO33070_ORIGINAL', dbms_redefinition.CONS_USE_ROWID);
END;
Success
3. Creating a duplicate table
CREATE TABLE SO33070_NEW
(
SERIAL_ID NUMBER(15,0),
INSERTED_TIME DATE DEFAULT SYSDATE
)
PARTITION BY RANGE ("INSERTED_TIME") INTERVAL (NUMTODSINTERVAL(1,'DAY'))
(
PARTITION "p1_1" VALUES LESS THAN (TO_DATE(' 2012-01-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN'))
)
Success
4. Starting the redefnition process
EXEC DBMS_REDEFINITION.START_REDEF_TABLE( uname => 'CDS_USER', orig_table => 'SO33070_ORIGINAL', int_table => 'SO33070_NEW', col_mapping => '', options_flag => DBMS_REDEFINITION.CONS_USE_ROWID);
Success
5. Copying the dependents
DECLARE
num_errors NUMBER;
BEGIN
DBMS_REDEFINITION.COPY_TABLE_DEPENDENTS(
uname => 'CDS_USER',
orig_table=>'SO33070_ORIGINAL',
[code]....
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Dec 19, 2011
I'm am getting an error that says that a role doesn't exist when I can cleary see it in DBA_ROLES. I can successfully grant other roles in this session. I am using Oracle 11.1 on RAC.
GRANT "CONNECT" TO BAKERD
Error at line 1
ORA-01919: role 'CONNECT' does not exist
select * from dba_roles where role = 'CONNECT'
[code]....
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