I want to display columns along with their constraints using describe command
Is it possible?
SQL> desc dept;
Name Null? Type
----------------------------------------- -------- -------------
DEPTNO NUMBER(2)
DNAME VARCHAR2(14)
LOC VARCHAR2(13)
I am trying to describe an STP in a package, but it gives me an error.
e.g. In package ABC suppose there is an STP XYZ, I am trying to describe ABC.XYZ function but it gives me an error code 4043 and error message object XYZ.ABC does not exist.
in the case below, when i created VIEW to add a new Department for some reason, its length is un-identified but i want the length as describe in table, how i can get ?
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Production With the Partitioning, OLAP and Data Mining options
devtest@ Test.DB> desc dept
Name Null? Type
----------------------------------------------------------------- -------- ------------
DEPTNO NUMBER(2)
DNAME VARCHAR2(14)
LOC VARCHAR2(13)
devtest@ Test.DB> l
1 select deptno, dname, loc from dept
2 union all
3 select 99 deptno, 'MY DEPTT' dname, 'MY LOCATION' LOC
4* from dual
devtest@ Test.DB> create view my_dept as
2 select deptno, dname, loc from dept
3 union all
4 select 99 deptno, 'MY DEPTT' dname, 'MY LOCATION' LOC
5 from dual;
[code]....
i would like to view all table statructure of a schema in a file. i need to take print out of it for one analysys.
i did like this
exp user/pwd file=dumpfile.dmp full=y rows=n log=logfilename.log
imp user/pwd file=dumpfile.dmp full=y indexfile=indexfile.sql logfile=logfilename.log
but
its look like this i could not format
REM CREATE TABLE "SYSTEM"."DEF$_AQCALL" ("Q_NAME" VARCHAR2(30), "MSGID"
REM RAW(16), "CORRID" VARCHAR2(128), "PRIORITY" NUMBER, "STATE" NUMBER,
REM "DELAY" TIMESTAMP (6), "EXPIRATION" NUMBER, "TIME_MANAGER_INFO"
REM TIMESTAMP (6), "LOCAL_ORDER_NO" NUMBER, "CHAIN_NO" NUMBER, "CSCN"
REM NUMBER, "DSCN" NUMBER, "ENQ_TIME" TIMESTAMP (6), "ENQ_UID" NUMBER,
[Code] ..........
how to create a script that will describe only the structure of 150 tables of a database.have it just like this, but I cannot produce the name of the table:
spool desctab.sql
select 'desc '||owner||'.'||table_name||'' from all_tables where owner='SKIMA'
order by table_name;
spool off
.. the output of the spool file is something like this:
Name Null? Type
----------------------------------------- -------- -------------
OFC_CODE VARCHAR2(3)
OFFICE VARCHAR2(35)
DESCRIPTION VARCHAR2(50)
REMARKS VARCHAR2(200)
OFFICER VARCHAR2(35)
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.
I want to create a store procedure to copy data from a source tables(which may not have any constraints defined) to a table which has primary key, foreign key and unique key constraints.
Any records which are rejected due to these constraints not being satisfied need to go another table.
Once the initial data load is done, these procedures need to be automated(through cron) to do the future incremental uploads in the same manner.
How do know all the constraints that are present on the data in a table in oracle ??
View 2 Replies View RelatedBasically, I need to fulfil the constraint:
"student cannot have more than 100 points"
I need to use a trigger to do this, but I don't understand how this would work.
Written in plain english I imagine it work work something like:
AFTER UPDATE
WHERE student.lessonid = lesson.lessonid
IF SUM(lesson.points) > 100 then ROLLBACK
lessonid is the only field relating the two tables.
--
How to fulfill that criteria, whether it be using triggers or not.
How to create any constraints other than NOT NULL in PLSQL RECORD.
View 5 Replies View RelatedIve created a scenario to what im trying to achieve here so ignore how its set-up attribute wise.
CREATE TYPE object_obj AS OBJECT (
obj_id NUMBER,
NAME VARCHAR2(20),
age NUMBER) NOT FINAL;
/
CREATE TYPE object_ext UNDER object_obj (
course_name VARCHAR2(20));
/
CREATE TYPE object_ext2 UNDER object_obj (
location VARCHAR2(20);
/
CREATE TABLE object_tab OF object_obj(obj_id PRIMARY KEY);
/
Now for the course_name i need to make sure it can only be on of these three values ('Science','Math','English'). I can't find a way to apply this constraint without making a table. But then that creates another issue of how to insert the data from the main supertype (object_obj) and i only want the object_tab table and view the subtypes via a select query.
When a table structure is copied from another table.What are the constraints copied and why?Unique keyPrimary keyForeign KeyCheckNot null.
View 10 Replies View RelatedAfter creating all the tables and the constraints, and inputting data to the table.. i want to delete everything. i try using drop table but it doesn't get rid of the constraints.
View 10 Replies View RelatedI was wondering with dba_constraints and i found unexpected result shown as below
select constraints_name, constraint_type from dba_constraints
constraint_name constraint_type
SYS_C00141 c
SYS_C00142 c
SYS_C00143 c
SYS_C00144 c
SYS_C00145 c
SYS_C00146 c
SYS_C00147 c
SYS_C00148 c
SYS_C00149 c
i jst want to know that what is this system generated constraints ?
I would like to print all the constraints on all columns given a table name.
Example:
SQL>@constrnts
Enter Table Name: emp
empno ---- Primary key
deptno ---- foreign key references Dept(deptno)
So I'm here creating some tables and if theres a guide where I can take a look at some Constraints Declarations , Mostly cause i have some values on the table that cannot be negative so i need to set constraints to be positive
View 4 Replies View RelatedExplain in detail about using constraints in creating tables.
View 3 Replies View Relatedwhy my code wont work. Am trying to create a constraint so that the only data that can be entered into the size field is a number between 4 and 15.
CREATE TABLE accommodation
(chalet_no NUMBER (3) PRIMARY KEY,
chalet_name VARCHAR2(20) NOT NULL,
size NUMBER CHECK (size >3) AND CHECK (size <16),
priceperweek NUMBER (4,2) NOT NULL);
Does seem to like line 4 of the code.
When we create a duplicate table, we use the below query:
create table table2 as select * from table1;
But table2 is created without any constraints inherited from table1.Can I know how can i create the table with all the constraints existing in parent table.
I want to truncate table partition but I'm getting error:
CODEORA-02266: unique/primary keys in table referenced by enabled foreign keys
because of table has a nested table. Currently this column is not in use so I could drop it, but I want to avoid it (table is huge). Is there another posibility to do truncate partitions in this table? ALTER TABLE ... SET UNUSED doesn't resolve the problem.
can a table level check constraints have conditional checking (if else clause or case conditional structures) and checks which are limited through something like a where clause which inside the table level check constraints.And can a table level check constraints refer to a column in another table column which should have a the same value.
View 1 Replies View RelatedI knew, how to enable or disable a constraint on a table.
>alter table <table_name> disable constraint <constraint_name>;
But if we know all the data is correct, it's better to disable all constraints to improve the performance.
We are allowed to Disable or Enable only a single constraint.
Enable or Disable All Constraints.
I have a table with 2 defined FK constraints which fires delete cascade events.
I want to deny deletions when the event is fired from one of the tables and permit them when the event is fired from the other table.
Is it possible?
Is any way to solve which table fires the event?
i am a beginner in SQL and want to create a table with the following constraints :
'orderno' should be primary key and start with o
'clientno' should be foreign key
'ordr date' is not null
'salesmanno' foreign key
'delytype' default value 'f' and possible value ( f or p)
'delydate' cannot be less than order date
'orderstatus' values ('in process.......)
here's my
create table sales_order(orderno varchar2(6) like 'o%' primary key,
clientno varchar2(6) foreign key references client_master(clientno),deldate date not null,dellyaddr varchar2(25),salesmanno varchar2(6) foreign key references salesman_master(salesmanno), delytype char(1) default 'f',billyn char(1),delydate date check > orderdate,orderstatus varchar2(10)check ('in process','fullfilled','cancelled');
how to copy data and constraints from one table to another table
View 8 Replies View RelatedHow to extract the ddl of constraints of a user in a database?
View 6 Replies View RelatedI want to delete data from say 100 tables without disable the constraints.
Tables having foreign key.. which is giving error if I select table randomly to delete.
I want to know the query which will give me the sequence of all tables based upon dependencies, so that If i delete the data on that sequence, it wont give me child record exists error.
How to drop the predefined constraints in oracle 10g, ALTER TABLE ECLIPSE.DEAL_STACKING_QUEUE DROP constraint SYS_C00302290; i got an error
View 2 Replies View RelatedI have some tables (below), but I'm having trouble entering multiple lines of data.Here are the tables I have created.
Quote: CUSTOMER table
SQL> create table customer
2 (customer_no char(6) not null,
3 name varchar2(30) not null,
4 address varchar2(50) not null,
5 credit_limit number(6,2),
6 constraint customer_customer_no_pk primary key (customer_no));
Table created.
SALESMAN table
SQL> create table salesman
2 (salesman_id char(8),
3 name varchar2(20) not null,
4 address varchar2(50) not null,
5 emaill_address varchar2(30),
6 constraint salesman_salesman_id_pk primary key (salesman_id));
Table created.
ITEM table
SQL> create table item
2 (ISBN char(13) not null,
3 title varchar2(30) not null,
4 price number(4,2) not null,
5 constraint item_ISBN_pk primary key (ISBN));
Table created.
INVOICE table
SQL> create table invoice
2 (invoice_no char(1) not null,
3 invoice_date date not null,
4 salesman_id char(8),
[code]...
Table created.
DELIVERY table
SQL> create table delivery
2 (invoice_no char(1) not null,
3 ISBN char(13) not null,
[code]...
Table created. I can enter data into the customer, salesman and item table without any problems. However, I need to enter multiple lines of data using the same invoice_no (which is 1). The data is generally the same, except for 2 things need changing but I keep getting the following error...
Quote: ORA-00001: unique constraint(SYSTEM.INVOICE_INVOICE_NO_PK) violated
I understand that I can only use invoice_no once since it is a unique key.
through Difference between table Level, column Level ,row level constraints.
View 8 Replies View Related