Domain check constraint using column name

Hello,
in the domain administration of Data Modeler, I defined a domain "age",
and set it to logical type "Integer". Now I want to define a check constraint
for that domain, saying, that every attribute of domain "age" must have
values greater than 18.
But how should I specify the column name for that check-constraint, since
I cannot know now, to which columns this domain will be applied to, and
these columns could have different names!
I tried {column} > 18 and hoped that {column} might be substituted by
the appropriate column name when generating DDL but it was not,
the DDL contained "check ( {column} > 18 ) which did of course not work.
Does anybody have an idea?

Thanks a lot, that solved the problem. I noticed additionally, that %COLUMN% is case sensitive, so %COLUMN% gets substituted by the column name in the DDL, while %column% does not.

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Can we use Column Names in Parameter Cursor

Hi
can we use Column Names in Parameter Cursor??
DECLARE
CURSOR Emp_Cur (P_Deptno NUMBER)
IS
SELECT Empno, Ename
FROM Emp
WHERE Deptno = P_Deptno;
BEGIN
FOR Emp IN Emp_Cur(10)
LOOP
DBMS_OUTPUT.PUT_LINE('The Employee Number is: '||emp.Empno);
DBMS_OUTPUT.PUT_LINE('The Employee Name is: '||emp.Ename);
END LOOP;
FOR Emp IN Emp_Cur(20)
LOOP
DBMS_OUTPUT.PUT_LINE('The Employee Number is: '||emp.Empno);
DBMS_OUTPUT.PUT_LINE('The Employee Name is: '||emp.Ename);
END LOOP;
END;
In the above Program, I send Deptnumber. If i send Column names like Empno, Ename. What can i do??
If Declare Samething Through Parameter Cursor, it doesn't accept VARCHAR2(Size)

For parameters you don't use size, just the type (DATE, NUMBER, VARCHAR2, CLOB, ...)
DECLARE
CURSOR Emp_Cur (P_Ename VARCHAR2)
IS
    SELECT Empno, Ename
    FROM Emp
    WHERE Ename = P_Ename;
BEGIN
FOR Emp IN Emp_Cur('SCOTT')
LOOP
    DBMS_OUTPUT.PUT_LINE('The Employee Number is: '||emp.Empno);
    DBMS_OUTPUT.PUT_LINE('The Employee Name is: '||emp.Ename);
END LOOP;
END;

EA2: Code is generated for only one column with Domain check constraint.

I created a Domain with a Value List (Y or N - Yes or No) and used that domain for two columns in the same table. But for only one column (the last one) the check appears in the generated DDL.
After I enabled the "Use Domain Constraints" both checks appear in the DDL, but one as an inline check constraint and one as an "Alter table add contraint.."
Once I changed the naming Template for the check constraint, both constraints are generated as an Alter table clause. The inline check constraint is only generated when the name of the constraint (according to the template) is too long. It would be nice if I could choose if I want an inline or a separate check constraint definition.
Edited by: Roel on Nov 23, 2010 11:55 AM
Edited by: Roel on Nov 23, 2010 12:02 PM

I logged ER for that
Philip

T-SQL - Using Column Name in where condition without any references when having multiple tables that are engaged using multiple joins.

Hi All,
I am a newbie for T-Sql, I came across a SP where multiple tables are engaged using multiple joins but the where clause contain a column field without any table reference and assigned for an incoming variable,like
where 'UserId = @UserId'
instead - no table reference like 'a.UserId = @Userid' ............ Can any please do refer to me any material that clears my mind regarding such issue................... help is appreciated.
Thank You.

As suggested above, use table alias with columns for unique referencing and to make the code easier to read.
BOL example for table aliasing:
USE AdventureWorks;
GO
SELECT S.CustomerID, S.Name AS Store, A.City, SP.Name AS State, CR.Name
AS CountryRegion
FROM Sales.Store AS S
JOIN Sales.CustomerAddress AS CA ON CA.CustomerID = S.CustomerID
JOIN Person.Address AS A ON A.AddressID = CA.AddressID
JOIN Person.StateProvince SP ON
SP.StateProvinceID = A.StateProvinceID
JOIN Person.CountryRegion CR ON
CR.CountryRegionCode = SP.CountryRegionCode
ORDER BY S.CustomerID ;
GO
GO
LINK:
http://technet.microsoft.com/en-us/library/ms124824(v=sql.100).aspx
Check the use of TABLE ALIASes and COLUMN ALIASes in the following blog:
http://www.sqlusa.com/bestpractices2005/organizationtree/
Without the use of aliases the code would become unreadable.
Kalman Toth Database & OLAP Architect
Free T-SQL Scripts
New Book / Kindle: Exam 70-461 Bootcamp: Querying Microsoft SQL Server 2012

Using Column Name in a Second Table

I have two tables in a sheet, Data and Report. Data contains a column named Hours. How can I write a sum function in the Report table that sums the values in the Hours column in Data? I'd like to use a named reference instead of a row/column letter/number range for when the Hours column gets longer.

David Benman1 wrote:
Thanks. I tried what you said, but initially it didn't work. I realized I needed to make the top row a header row, but that leads to a new question. All my columns now can be reference by name except the first column. Is there anything special I need to do to the first column? If the first column is "Hours", then when I type in "Hours" in my formula, the spreadsheet doesn't recognize it as a column name.
Yes, you must read the User Guide which explains :
Yvan KOENIG (VALLAURIS, France) 2 septembre 2010 12:06:03

How to use column name as variable in select statement

hi,
i want to make a sql query where in select statement using variable as a column name. but its not working plz guide me how can i do this.
select :m1 from table1;
regards

Hi,
Is this what you want..
SQL> select &m1 from dept;
Enter value for m1: deptno
old   1: select &m1 from dept
new   1: select deptno from dept
    DEPTNO
        10
        20
        30
        40
SQL> select &m1 from dept;
Enter value for m1: dname
old   1: select &m1 from dept
new   1: select dname from dept
DNAME
ACCOUNTING
RESEARCH
SALES
OPERATIONS
SQL> select &&m1 from dept;
Enter value for m1: loc
old   1: select &&m1 from dept
new   1: select loc from dept
LOC
NEW YORK
DALLAS
CHICAGO
BOSTON
SQL> select &&m1 from dept;
old   1: select &&m1 from dept
new   1: select loc from dept
LOC
NEW YORK
DALLAS
CHICAGO
BOSTONIf you use single '&' then each time you fire the query, It will ask for the new value..
But if you will use double '&&' the value of m1 will be persistent across the session..
Twinkle

Using Column Name returned by function in SELECT statement

Hi
Output from my function (RETURN data type is VARCHAR2) is column name. I want to use it directly in my SELECT statement. Below is simplified example of this:
--- Function
CREATE OR REPLACE FUNCTION simple RETURN varchar2 IS
BEGIN
RETURN ‘my_column’;
END simple;
--- Select
SELECT simple FROM my_table;
This does not work. It seems that output from function is passed in quotation i.e.
SELECT ‘my_column’ FROM my_table;
So the output from SELECT is a list of rows populated with values my_table:
COLUMN     simple
ROW1     my_column
ROW2     my_column
ROW3     my_column
Can please someone help me with this?

I'm not sure I got you right.
In standard SQL everything must be known at compile time. If not dynamic SQL is required, but is a costly operation (usually requires parsing before each execution) so it should better not be used when standard SQL can do it.
I provided a design time example where a function returns the column name from the given the table name and column id for a varchar2 column data type to make things simple. Then a query string is constructed and executed dynymically to return all column values of the chosen table_name.column_name.
SELECT simple FROM my_tableAt compile time the simple function return value is unknown (any varchar2 value would do) you already find out you get the (same) return value (i.e column name) for each table row => dynamic SQL needed to get the column values
The purpose of function would be to rename all columns for provided table.The table name would be provided, right? If yes => dynamic SQL
What is the function supposed to return the column name (where would the new name come from?), the column alias (which table column would be renamed to the new name?)
The user could use the new_column name as the column alias name submitting the query.
Is it possible to do this?Maybe () using a pipelined function (different data types - number,date, ... not cosidered yet) but your simple query;
<tt>SELECT simple FROM my_table</tt>
might look like:
<tt>select my_column_value new_column_name from table(get_column_value(table_name,column_name))</tt>
Sorry, no Database at hand to provide a specific example.
Regards
Etbin

Using column names dynamically in Trigger

Hello Everyone,
I want to use a trigger for my application in which column names will be provided dynamically rather than hard coded. i.e. for ex. I want to have foll. code
Execute Immediate
'Begin
dbms_output.put_line'' ' | | :new.col_name | | ' ''); End; ';
where in ":new.col_name" col_name will be replaced dynamically. so if any of you can tell me how to achive this I will be thankful to you. Hoping for the best.
Regards
-Heena

My advise will be to think about using dynamic PL/SQL.

Crash of Oracle XE when check constraint uses in-operator with desc. values

ORA-03113 and other errors in conjunction with lost of connection occur in Oracle XE under the following conditions:
/* Crash (values of check constraint in descending order) */
DROP TABLE CRASHTEST CASCADE CONSTRAINTS;
CREATE TABLE CRASHTEST
CRASHTEST_ID NUMBER(9),
CRASHTEST_OK NUMBER(1) DEFAULT 0
ALTER TABLE CRASHTEST ADD (CONSTRAINT CRASHTEST_CK CHECK (CRASHTEST_OK IN (0,-1)));
INSERT INTO CRASHTEST (CRASHTEST_ID, CRASHTEST_OK) VALUES (1, 0);
INSERT INTO CRASHTEST (CRASHTEST_ID, CRASHTEST_OK) VALUES (2, -1);
COMMIT;
SELECT * FROM CRASHTEST WHERE CRASHTEST_OK = 0;
If all values of the in-clause within the check constraint are entered in ascending order, no error occurs:
/* No Crash (values of check constraint in ascending order) */
DROP TABLE CRASHTEST CASCADE CONSTRAINTS;
CREATE TABLE CRASHTEST
CRASHTEST_ID NUMBER(9),
CRASHTEST_OK NUMBER(1) DEFAULT 0
ALTER TABLE CRASHTEST ADD (CONSTRAINT CRASHTEST_CK CHECK (CRASHTEST_OK IN (-1,0)));
INSERT INTO CRASHTEST (CRASHTEST_ID, CRASHTEST_OK) VALUES (1, 0);
INSERT INTO CRASHTEST (CRASHTEST_ID, CRASHTEST_OK) VALUES (2, -1);
COMMIT;
SELECT * FROM CRASHTEST WHERE CRASHTEST_OK = 0;
Especially interesting is the fact, that the error is caused by a check constraint in conjunction with a select statement!
Hopefully, there are no other hidden bombs stealing my time...
Have a nice day,
Sven

It might be interesting to post that in the XE forum to notify Oracle developers and XE users.
Oracle Database Express Edition (XE)
C.

How to use column name from subquery result set.

I have these 2 tables
SQL> select * from temp
2 ;
TABLE_NAME                     COLUMN_NAME                    TYPE
lst                            name                           STATUS
lst                            val
SQL> select * from lst;
TYPE                           NAME
VAL
STATUS                         Pending
Pendiente
STATUS                         Closed
Cerrado
STATUS                         ABC
ABSI want to select column_name from temp table and generate select statements.
select name from lst;
select (select COLUMN_NAME from temp where rownum<2) from lst;
SQL> select (select COLUMN_NAME from temp where rownum<2) from lst;
(SELECTCOLUMN_NAMEFROMTEMPWHER
name
name
nameoutput I expect is
SQL> select name from lst;
NAME
Pending
Closed
ABC

MichaelS wrote:
Can I do it using SQLe.g.:)
I was just about to post a similar approach (which should work from 10.2 and upwards) :
SQL> SELECT value(x).getRootElement() col_name,
2         extractvalue(value(x),'*') col_value
3 FROM ( SELECT column_name, table_name
4         FROM temp
5         WHERE rownum = 1
6       ) v
7     , XMLTable(
8        '/ROWSET/ROW/*'
9        passing dbms_xmlgen.getXMLType('SELECT '||v.column_name||' FROM '||v.table_name)
10       ) x
11 ;
COL_NAME        COL_VALUE
NAME            Pending
NAME            Closed
NAME            ABC

Using "$" character with Oracle; getting "invalid column name"

I am running the following query against an Oracle database:
select price from my_table
where index_name = 'CGPR_C$'
and settlement_date = to_date('02/19/2001','MM/DD/YYYY')
The query runs fine in TOAD.
If I run this query from my java code, I get an "invalid column name" exception.
If I take out the "$" character, the query runs fine.
I've tried inserting the "$" in as unicode, escaping out the character, ||chr(36)||, and nothing works.
Please help!
Ashley

Look up your Oracle SQL documentation and find out how to use column names that would otherwise be invalid. Some databases allow you to put column names, table names, and so on in square brackets (e.g. [CGPR_C$]) but I don't know Oracle's syntax.

Primary key and relevant not null check constraints....

Hi ,
There are some constraints of primary key type and not null check constraints on columns which constitute each primary key....
Should I/Do I have to drop them....????
Do they burden the db at the time of data validation....????
Thanks...
Sim

Hi,
>>There are some constraints of primary key type and not null check constraints on columns which constitute each primary key..
In fact, a column that constitutes a primary key, by default cannot accept NULL values. In this case, defines a PK column as NOT NULL would not be necessary.
LEGATTI@ORACLE10> create table x (id number constraint pk_x primary key);
Table created.
LEGATTI@ORACLE10> desc x
Name                  Null?    Type
ID                    NOT NULL NUMBER
LEGATTI@ORACLE10> select constraint_name,constraint_type,table_name,search_condition from user_constraints where table_name='X';
CONSTRAINT_NAME                C TABLE_NAME      SEARCH_CONDITION
PK_X                           P X
LEGATTI@ORACLE10> create table y (id number not null constraint pk_y primary key);
Table created.
LEGATTI@ORACLE10> desc y
Name                  Null?    Type
ID                   NOT NULL NUMBER
LEGATTI@ORACLE10> select constraint_name,constraint_type,table_name,search_condition from user_constraints where table_name='Y';
CONSTRAINT_NAME                C TABLE_NAME      SEARCH_CONDITION
SYS_C006327381 C Y "ID" IS NOT NULL
PK_Y                           P Y
LEGATTI@ORACLE10> alter table y drop constraint SYS_C006327381;
Table altered.
LEGATTI@ORACLE10> desc y
Name                                      Null?    Type
ID                                        NOT NULL NUMBER
LEGATTI@ORACLE10> insert into y values (NULL);
insert into y values (NULL)
ERROR at line 1:
ORA-01400: cannot insert NULL into ("LEGATTI"."Y"."ID")
LEGATTI@ORACLE10> insert into y values (1);
1 row created.
LEGATTI@ORACLE10> insert into y values (1);
insert into y values (1)
ERROR at line 1:
ORA-00001: unique constraint (LEGATTI.PK_Y) violated
>>Should I/Do I have to drop them....????
I don't see any problem, otherwise, drop the NOT NULL constraint is the same with alter the column table like below:
LEGATTI@ORACLE10> create table z (id number not null constraint pk_z primary key);
Table created.
LEGATTI@ORACLE10> select constraint_name,constraint_type,table_name,search_condition from user_constraints where table_name='Z';
CONSTRAINT_NAME                C TABLE_NAME                     SEARCH_CONDITION
SYS_C006328420 C Z "ID" IS NOT NULL
PK_Z                           P Z
LEGATTI@ORACLE10> desc z
Name                                      Null?    Type
ID                                        NOT NULL NUMBER
LEGATTI@ORACLE10> alter table z modify id NULL;
Table altered.
LEGATTI@ORACLE10> select constraint_name,constraint_type,table_name,search_condition from user_constraints where table_name='Z';
CONSTRAINT_NAME                C TABLE_NAME                     SEARCH_CONDITION
PK_Z                           P Z
LEGATTI@ORACLE10> desc z
Name                                      Null?    Type
ID                                        NOT NULL NUMBERCheers
Legatti

List of common column name in a table

I had an urgent request to check for common column name in a table. The table that I can currently have select privelge is ALL_TAB_COLUMNS. I need to list all column_name, table_name, and owner. Thanks.

SQL> sho user
USER is "SCOTT"
SQL> select * from tab
2 where tname like '%EMP';
TNAME                          TABTYPE CLUSTERID
EMP                            TABLE
V_EMP                          VIEW
SQL> select distinct owner, table_name
2 from all_tab_columns
3 where table_name like '%EMP';
OWNER                          TABLE_NAME
SCOTT                          EMP
SCOTT                          V_EMP
SYS                            EXU7COL_TEMP
SYS                            EXU8COL_TEMP
SQL>

Column name substitutions

I use column name substitutions e.g. #ENAME# in Report Row Template.If I have in Report definition easy select, everything works well. But if I use select with alias in Report definition and i use #ALIAS# in template so it doesn't work(it gives bad content of column).
select
ename as ALIAS,
from...
Can you help me.
Message was edited by:
user542927

Just curious. What happens if you do this:
SELECT ename_alias, empno_alias, dept_alias
FROM (SELECT ename ename_alias, empno empno_alias, dept dept_alias
FROM emp)?
Denes Kubicek

Column names dynamically in Dynamic SQL

Hi All,
We can use Table Name dynamically in Dynamic SQL.
Can we use column names dynamically?
Thanks,
Umasankar

Hi Todd Barry,
Thanks lot for your immediate response.
Could you please tell me, how can we use column name dynamically?
I tried but, I didnt get the correct result.
Here is my coding.
Declare
SQL_String Varchar2(2000);
Category varchar2(50):= 'ELECTRO_PLATING_413';
Type ConstCurTyp is REF CURSOR;
Const_Cv ConstCurTyp;
vLab_name varchar2(80);
Begin
Execute Immediate 'Truncate table tto_lab_names';
dbms_output.put_line(category);
dbms_output.put_line(' ');
SQL_String := 'Select lab_name from tto_constituents where :category is not null';
Open Const_cv for SQL_String using category;
Loop
Fetch Const_Cv into vLab_Name;
Exit When Const_Cv%NotFound;
Insert into lab_names values(vLab_name);
End Loop;
Commit;
Close Const_Cv;
End;
I am getting all the lab_names as result.
Thanks,
Umasankar
null

Domain check constraint using column name

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