SQL & PL/SQL :: How To Add Oracle Constraint To Tables
Jan 4, 2013
I have three tables:
A {op_id, op_name, .}
B {b_id, op_id, supplier_id, .}
C {c_id, op_id, op_id2, supplier_id, relation, .}
Table B and C have op_id which is foreign key from table A. In table A op_id is primary key, in table B b_id is primary key and in table C c_id is primary key. In table B supplier_id and op_id may have duplicate records. Now I want to add constraint so that if I delete records from Table B for op_id and if a relationship record exists for op_id in table C then it should not allow me to delete. Is it possible through referential integrity constraint ?
I need to alter a table to check that the data in a column is contained in a similar column in another table.
I have a STORES table and a STORE_REP table. Both tables have a column REP_ID.
I need to add a CHECK constraint into the STORES table to make sure that the info entered into its REP_ID column matches an entry in the STORE_REP table.
Both have a NUMBER(5) data type.
Will it make any difference if the REP_ID column in the STORE_REP table was originally created with a VARCHAR2(5) data type and was later converted to NUMBER(5), while the REP_ID column in the STORES table was created as NUMBER(5) when that table was created?
i want to get table name, constraint name, constraint type with join processes in string type. this is what i want: alter table tablename add constraint constraintname constrainttype(columnname)
previously i set null constraint to the column and creating some rows and need to change new entering values as not null constraint to the column in oracle without disturbing the old records. how can I do that.
I came across an implementation where data from DB2 tables are moved to Oracle tables, for BI solutioning, using some oracle procedures called from MS SQL DTS packages which are scheduled jobs.Just being curious, can this be done using OWB or ODI rather than the above detour. I suppose there are some changes being done in those procedures before the data is being loaded into Oracle tables, can't this be done using OWB/ODI? Can it be scheduled too as jobs using OWB/ODI?
My requirement is to match the records in MTCH_TBL and HIST_TBL on the basis of joining S_SEC(MTCH_TBL) with SEC_ALIAS(HIST_TBL) and INSTANCE (HIST_TBL) as 100 and choosing the record with max EFF_DATE from HIST_TBL.
I have come up with a query as:
select a.h_sec, a.s_paid, a.h_paid FROM MTCH_TBL a, HIST_TBL b where a.S_SEC=b.sec_alias(+) and b.instance(+)=100 and b.EFF_DATE = [code]...
join using the EFF_DATE field also and get the expected results.My results are appearing as BLANK. However I need to produce the results as stated below:
Is there any API to generate XSDs from Oracle tables? DBMS_XMLSCHEMA.GENERATESCHEMA accepts only Types and not the Table names. I want to generate XSD from the tables including length, null and default validations.
I am trying to export and import tables from oracle...For this i am using imp exp utility...But this is being carried out from cmd prompt...IS there any way by which i can execute these from sql prompt..So that by establishing jdbc connection thgh java code...i cud run the code...
Let us say there is an oracle table A. How do i find out what stored procedures/packages/views are using this table A.
Reason to know: When some DDL changes happen on table A, how do i know what are the impacted sp/pkg/views which should also be modified. Is there any query with which i can find this?
is it possible to create tables using variables in pl/sql such as the following example which is actually in php. i would like to create a table dynamically.
$create_samp_table = CREATE TABLE $MCSCHEMA.".$samp_id." AS SELECT * FROM $MCSCHEMA.".$samp_src_table." WHERE ROWNUM = 0
i am trying to create a external table.Table is getting created but there is no data.While checking the log file, its saying
KUP-04021: field formatting error for field CUST_CODE KUP-04026: field too long for datatype KUP-04101: record 1 rejected in file /data/mmi_mig_data/PCOM_CUSTOMER_1.csv KUP-04021: field formatting error for field CUST_CODE KUP-04026: field too long for datatype KUP-04101: record 2 rejected in file /data/mmi_mig_data/PCOM_CUSTOMER_1.csv
But according to me in CSV file everything looks to be okay.External Table:
I have installed the Oracle 10g software and created Database my own in RHEL 4. i got the emp tables when i run @?/rdbms/admin/utlsampl.sql with main user system. After i created another user test and i tried to get the tables. but im getting error like table not exist.
we are looking to use oracle 11g as a log database using partitioned tables.
- The tables will have only a 3-5 columns of ~varchar(50) size - We are looking at a volumn of ~33million rows (inserts) per day.
1) Will partitioned tables be able to handle this type of volume? 2) if yes, will a Composite Partitioning (using last modified datetime as range) then subparition with range be the best choice?
if this type of volume is too high for 11g, what are some of the alternative products we can use.
i have a problem that i have created a table named PROJECT and structure is like- CREATE TABLE PROJECT ( id VARCHAR2(250 BYTE) NOT NULL, NAME VARCHAR2(250 BYTE) NOT NULL, COMPID NUMBER NOT NULL,
[code]...
and this table is created in some number of different database then i want to delete the not null constraint of "id" column and there is 3 not null constraint in my table and i didnot gave name at the time of creation, so we cant delete it by its name in the script because there will be different name in another database for the same constraint. i want to make a script to delete the not null constraint because it is the part of my script.
how should i get proper information for deleting the constraint. and i used "user_constraints" but it shows same information for the all three "not null" constraint.
Create table students ( Sid number(3), Sname varchar(20) not null, Email varchar(20) not null, Doj Timestamp default sysdate not null, Dob date not null,
[code]....
when i run the above code i m getting error like this...I dont understand wat error it is...Because i didnt reference any column in the check constraint...Thn why it says that i m referencing some column..
Error: SQL> SQL> Create table students 2 ( 3 Sid number(3), 4 Sname varchar(20) not null,
I have a parent table called dept and one child table emp which is referenced on deptno and now both have data . Now i want to truncate the dept table and i have truncated emp table after it when i am trying to truncate dept table then oracle throws a error that is-
"ORA-02266: unique/primary keys in table referenced by enabled foreign keys" ,
but when i tried to delete some records 1 by 1 then these have delete but truncate is not still working. why? if i have 10 millon records.
Does any technical details on the tables found in Oracle Internet Directory? I've checked eTRM and google etc.. - nothing there apart from very minor snippets. I'd like logical schema drawings (PDF) if possible or even a list of the tables and what they do as like the modules in EBS.
I have installed oracle 10g software and created Database on RHEL 4. when i run the run.sql its successively done but im not getting tables. whats the prob.
The code was originally an MS Access Query with linked tables to the Oracle DB however trying to remove the need for access and have it drop directly into Excel using Recordset.
SELECT SWPRO.CASE_INFORMATION.CASEDESC, SWPRO.OUTSTANDING_MAIL.CASENUM, CASE_DATA_1.FIELD_VALUE, SWPRO.OUTSTANDING_MAIL.SENTDATE, SWPRO.OUTSTANDING_MAIL.DEADDATE FROM
I am attempting to perform regular updates on several Oracle tables. The scripts performing the updates are scheduled to run every two minutes, get a value and update the table with that value.
The value doesn't always change but the scripts will still attempt to perform an update.
The same script is part of 7 objects, all of them are scheduled to run at the same time. They update the same table but never the same row.Even though the script is mostly the same on the 7 objects, they run completely independently of each other. The first object will usually perform the update without any problems but when it comes to the second object the script will time out.
I have Oracle 10g on an XP machine, and use the 'Oracle in OraDB10g_home1' driver to read the data. I have another Windows Server 2008 R2 machine on the same network, with SQL Server 2012 on it. What is the best way to read Oracle Tables in SQL Server? Can I setup an ODBC link from my Windows Server machine to the Oracle Database (which would require me to download an Oracle ODBC driver)? Or is the best way to export the required tables from Oracle (e.g. into csv format) and import them into SQL?
Can I apply Referential Integrity to only selected rows of a particular column? This is the reference key to the primary key to another table. But, the issue is, this reference column is not having mandatory data for all the rows. So, whenever this is null, I dont want it to be referred by parent table.
