How to concatenate column name in PL/SQL

Here is ex.
I want to execute like this
for i in 1 .. 18 loop
EXECUTE IMMEDIATE 'select qty_sz'||i||' from table1';
end loop;
I mean Can I cancatenate column name with a variable?
your advice is gretly Appeciated.
Ram.

It would be a lot easier to diagnose your problem if you posted the error message. Oracle has an awful lot of error messages.
I thing I have noticed is this:
EXECUTE IMMEDIATE mysql into var1 using 'qty_sz'||i ;
You have an implicit datatype conversion there, i being a number and you can only concatenate varchar variables. There is a little wrinkle in this, in that to_char seems to put a space in front of any number. So try this:
EXECUTE IMMEDIATE mysql into var1 using 'qty_sz'||ltrim(to_char(i));
and see if it makes any difference.
Another problem will be if your columns are like this: qty_sz01, qty_sz02,...qty_sz8. because the default mask doesn't incude the leading zero so in that case you should specify the mask in the to_char(i, '09')
If neither of those fixes your problem post the your error message.
rgds, APC

Similar Messages

How to get column names for a specific view in the scheme?

how to get column names for a specific view in the scheme?
TIA
Don't have DD on the wall anymore....

or this?
SQL> select text from ALL_VIEWS
2 where VIEW_NAME
3 ='EMP_VIEW';
TEXT
SELECT empno,ename FROM EMP
WHERE empno=10

How to pass column name as a   values from one page to another

hi
i have created a report(pivot) from a table
SQL> SELECT * FROM T;
C1 C2          C3 D                SEQ
A   AA           2                    1
A   AB           3                    2
A   AC           2                    3
B   AB           5                    4
B   AC           6                    5
SQL> SELECT C1
2 ,NVL(MAX(CASE WHEN C2='AA' THEN C3 END),'') AA
3 ,NVL(MAX(CASE WHEN C2='AB' THEN C3 END),'') AB
4 ,NVL(MAX(CASE WHEN C2='AC' THEN C3 END),'') AC
5 ,SUM(C3) FROM T GROUP BY C1;
C1          AA         AB         AC    SUM(C3)
A            2          3          2          7
B                       5          6         11
SQL>
my requirement in Apex is like this(reverse)
eg-
when i click on cell values '2' then,it should return
C1 C2          C3 D                SEQ
A   AA           2                    1
{quote}how to pass column name as a values from one page to another
for example i have to pass 'c2' as a value to next page{quote}for report pivot you can reffer below link
Report
Amu

thanks for your reply
i 'm doing what exactly you mention here .
my problem here is
i have 15 columns
i am executing a query based on the values of the column(column name) in the target page
1)here i am passing(all) the column values to the next page-but i want to pass only one column values(column name)
when i click on any cell of that column
OR
2)i can pass all column name to target page -there(in the target page) i can filter out
i think option 1 would good if you filter out the unwanted columns
Regards
Amul

How to pass column name at run time in function.

how to pass column name at run time in function as parameter.
thank in advance
pramod patel

Hello,
Using dynamic sql you can pass column name to function. well I am not getting what you really want to do ? Please write in more detail. By the way I am providing one example here. see it uses dynamic sql.
Create or replace function fun_updtest (p_columnname_varchar2 in varchar2,
p_value_number in number)
return number is
v_stmt varchar2(500);
begin
v_stmt := 'update emp
set '||p_columnname_varchar2||' = '||to_char(p_value_number)||'
where empno = 7369';
execute immediate v_stmt;
return 0;
commit;
end;
call to this function can be like this..
declare
v_number number;
begin
v_number := fun_updtest('SAL',5000);
end;
Adinath Kamode

How to rename column name of table?

Hello...
How to rename column name of table?
The column have data.
Thanks.
Martonio.

The following should work in 9i release 2 and above.
SQL> create table mytable(col1 varchar2(2),
2 col2 date);
Table created.
SQL> insert into mytable values('t1',sysdate);
1 row created.
SQL> select * from mytable;
CO COL2
t1 30-NOV-04
1 row selected.
SQL> desc mytable
Name                                      Null?    Type
COL1                                               VARCHAR2(2)
COL2                                               DATE
SQL> alter table mytable rename column col2 to mydate;
Table altered.
SQL> desc mytable
Name                                      Null?    Type
COL1                                               VARCHAR2(2)
MYDATE                                             DATE
SQL> select * from mytable;
CO MYDATE
t1 30-NOV-04
1 row selected.
SQL> disconnect
Disconnected from Oracle9i Enterprise Edition Release 9.2.0.3.0 - 64bit Production
With the Partitioning option
JServer Release 9.2.0.3.0 - Productionhttp://download-west.oracle.com/docs/cd/B10501_01/server.920/a96540/wnsql.htm#972698

How to Concatenate Table name and Where condition at runtime

I am passing parameter as User and Zone to Stored Procedure.How to concatenate Table Name
and WHERE CONDITION in SQL Statement.i have different type of users and zones.

Hi !
declare
cur sys_refcursor;
r emp%rowtype;
v_sql varchar2(512);
begin
-- do your logic here
v_sql := 'select * from emp';
open cur for v_sql;
loop
    fetch cur into r;
    exit when cur%notfound;
    dbms_output.put_line(r.ename);
end loop;
close cur;
end;In this example you can see how can be done this with cursor vars .. You should concatenate v_sql string according to your requirements.
But as in further posts has already been mentioned , be carefull at publishing such kind of procedures and think on security.
Also when you want dynamicaly change from clause , you should consider using different records to accept data ? Maybe all your tables has the same structure and then this problem will be smaller.
T
T

How to get column names in table maintenance dialog?

I created a new Z table and created a maintanance dialog so that I can maintain the table through sm30. i don't see columns names on maintenance screen, just a "+" sign for each column! Could someone please tell me how to display column name?
Thanks.
Mithun

Hello Mithun
The column texts are taken from the field descriptions of the data elements used in your z-table. A "+" sign usually indicates that none of the field descriptions of the data element has been maintained.
Regards
Uwe

How to validate column name in dynamic made sql?

Oracle db, jdbc, web app with struts2/spring.
Example table could be this:
CREATE TABLE album
album_id number(10) not null,
artist varchar2(50) not null,
title varchar2(50) not null,
released DATE,
CONSTRAINT album_pk PRIMARY KEY (album_id)
);In may app the user MAY search, MAY sort, and the result from an select might return 10.000 rows.
The basic sql usually look like this.
String sql = "select album_id, artist, title, released from album";Then in the html page the user can add search criteria for each column. Like type "iron maiden" in artist field, put "1982" in released field. And you all know what the exceptionally result should be from that :)
Now I need to modify the sql a bit:
if( artist search field contains stuff )
sql = sql + " where nvl( artist,' ') like ?"
}we try use prepared statements right? So we use ? as placeholders, and then add "iron maiden" into this statement later on.
Nice, no big fuzz right, and pretty safe from sql injections i guess.
But now I have to have an if/else for every single field in the table. Boring. In my app I got like 25 tables like this, with 20 columns minimum. Copy/Paste have never been so boring.
I also might have to add "order by" with user selected columns and their order. I have to count the query to get total result in case i got to split it up in pages. So there is alot of if/else and sql = sql + "more stuff", and sticking to ? and pure prepared statements is impossible.
But doing this is not good either:
for( each element in a map)
sql = sql + " and nvl( " + key + ",' ') like ?"
}Where key is "artist".
In struts and other tag libs its easy to make kode like:
<s:textfield name="model.addSearch( 'artist' )" value="%{model.getSearch( 'artist' )}" size="30" />
Silly example maybe, but just to make a point.
Inputed values in an html form, can very easily be a part of a dynamic created sql - which becomes a security problem later on.
Artist is an column name. Key should be validated if it contained an valid column name.
I could make a list of strings, containing valid column names to check against.
My question is if there is possible to get this type of information from the database, so I don't have to hand-make these lists?
But I also want to keep the number of heavy and slowing queries down.
My app have like 25 tables now, and I could easily get away with hand-make everything, copy/paste around etc. But I have more projects and this question will be here next time too. And after there again...

Etharo wrote:
Metadata. Then I have to query the database, take the result and use it for validating of input. If my sql only query 1 table, then this is ok. In this case I could do with that. But if the sql query mutliple tables, with sub-selects, unions etc. Then I might have to query all tables first, and even then I might not have what I want.
The best way is of course to run the query, then get the metadata from that query - cause then im 100% sure what columns will be returned, and then I can validate with that.... 1 query is often not that slow. But I might query once to find total number of rows the query return in order to decide if we need to page the result. then query to get the metadata for validating input, then query to get the result... Maybe this is ok -but my head don't like it as an general ok thing to do, but I can't really say why...If you have a gui screen then it needs to correspond to some specific query. It can't be all possible combinations.
So once you know the query you can obtain the meta data using a query that returns no results. Like the following.
select * from mytable wheren 1 = 0
>
Jschell:
I agree to what you say. I don't understood everything you said tho.
Im not sure if you talk about having 1 search field (like google), and you input stuff there that might be in any columns.
I have several search fields in one-to-one relasionship with view column/sql query column.
Then you already know what the field represents. So validate it in the gui and not via the database.
The first is way more advanced since you have to cover any input, any column, any case etc. Pluss add ranking. Lots of work for someone who have done little searchengines.
Latter is simpler, but might also be limiting.Huh?
As an example if you have a call center then the operators are not going to be doing unrestricted searches to find customers. They are going to look using a very limited set of data like the customer name and telephone number.
>
My job is very much like an consulent. They got an app, I shall add a new feature. The app is old and ugly coded. My boss ask how long it takes to make this, I say 2months, he decide 1 month. My dev time for features is rarely above 1 month, and I don't make much new apps.
So I don't have the time to make advanced codegenerator, or spend time to evaluate various frameworks. Bringing an framework into the existing code is actually difficult. But I do want to improve the code, and add good code into the existing app that can be extended without evil pain.
That doesn't jive with your OP. You made the following statement "My app have like 25 tables now, and I could easily get away with hand-make everything,...".
That suggests that you are doing much more than simply updating an existing application.
If you only need to add one new field then you should do only that. You shouldn't be attempting to add a system spanning validation system.
On the other hand if you are in fact adding a validation system, then code generation makes it likely that it would take less time or no more than the same. And it is less likely to introduce bugs.
Learn how to make an code generator? Well I guess thats what I asked help for - point me in the right direction if you could pls. Putting strings together to become code in an logic way is usually manageable, at least for simple querys. Evaluating that the generated code is good/safe - got no good clues...
Learn about frameworks? Got no time. Hope I will get the time, but I won't. The customer must want to spend the money so I can get the time, that won't happen cause an framework does not add features, its only cost saving in terms of dev time, and maintenance time. The customer have no such focus/interest. They got a bit money to spend now and then regularily. i.e. government.
I just want to try code as good as possible so I save myself from errors, painfull rewrites, and dev-time that gets out of proportions because of stupid code. So the question is actually about me trying to improve myself, its just that i don't know how right now.There are two goals.
1. Implement a specific feature in an existing application.
2. Learn a new way to solve problems.
Nothing says that the second will help with the first. They should be addressed separately and your post doesn't make it clear what the first is so it is hard to say how it should be down.
As for the second I already made a suggestion which provides two new ways to solve problems.

How to use get column name.vi in SQL toolkit 2.0?

Due to the vi "get column name.vi" paremeters,no table name has connected to the vi. So, I want to ask how to use this vi for gain one column name of a table. Maybe there are some other ways to solve column name getting.
Thanks.

Thanks!
Error 4101 Description:
Execute SQL - The connection, statement, or query handle you provided is not valid.
I don't just used the toolkit in a while,now, I am developing a irrigation system. For the table field names defined by users,column names must be known before any select operations. Do you have any other good idea about drawing out the columnname parameters?
As you know, a valid DSN and table have been also available. The database I used is Access. The bad thing to me is that there is no any text information gotten. And I think, it may be some problems in connection way which I don't find out.
Really appreciated by your reply.
Could you give me some example in the aspect?
Thank you again.

How to suppress column names in SQL-report

What I want is just the data, without any column names.
COLUMN LDATE OFF;
SELECT     SYSDATE LDATE
FROM DUAL;
LDATE
07.11.11
This example doesn't work. There is still LDATE above column. Any idea?

user5116754 wrote:
Great, it's so simple. Im sure there is a way to omit this result statement: "531 rows selected" at the end of report!There is, and it's also in the documentation...
SQL> set feedback off
SQL> select * from emp;
     EMPNO ENAME      JOB              MGR HIREDATE                    SAL       COMM     DEPTNO
      7369 SMITH      CLERK           7902 17-DEC-1980 00:00:00        800                    20
      7499 ALLEN      SALESMAN        7698 20-FEB-1981 00:00:00       1600        300         30
      7521 WARD       SALESMAN        7698 22-FEB-1981 00:00:00       1250        500         30
      7566 JONES      MANAGER         7839 02-APR-1981 00:00:00       2975                    20
      7654 MARTIN     SALESMAN        7698 28-SEP-1981 00:00:00       1250       1400         30
      7698 BLAKE      MANAGER         7839 01-MAY-1981 00:00:00       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-1981 00:00:00       2450                    10
      7788 SCOTT      ANALYST         7566 19-APR-1987 00:00:00       3000                    20
      7839 KING       PRESIDENT            17-NOV-1981 00:00:00       5000                    10
      7844 TURNER     SALESMAN        7698 08-SEP-1981 00:00:00       1500          0         30
      7876 ADAMS      CLERK           7788 23-MAY-1987 00:00:00       1100                    20
      7900 JAMES      CLERK           7698 03-DEC-1981 00:00:00        950                    30
      7902 FORD       ANALYST         7566 03-DEC-1981 00:00:00       3000                    20
      7934 MILLER     CLERK           7782 23-JAN-1982 00:00:00       1300                    10
SQL>

How to bind a column name in PL/SQL

i have this code in a transaction report.
DECLARE
q VARCHAR2 (1000);
t VARCHAR2 (15);
BEGIN
t := '11110000';
q := q || 'select STARTDATE, PHONESOURCE, PHONETO, DURATION ';
q := q || 'from TRANSACTION ';
q := q || 'where TRANS_ID = ' ||t|| 'and STARTDATE between :P3_DATE_FROM and :P3_DATE_TO ';
q := q || 'and PHONESOURCE = :P3_FILTER_BY_TEXT';
RETURN q;
END;
I have a combo box item which suppose to select between 2 different columns (PHONESOURCE & PHONEDEST) lets call this combo box: P3_FILTER_BY.
I need to replace 'PHONESOURCE' (marked) with this combo box in order to set the query dynamically. the question is: is it possible? and if so how?
i tried few variaton of replacing it, but it wouldn't work.

thank u for your answer,
However, i've thought about it and tried it before. but it gave me this error when applying the edit page:
"LS-00103: Encountered the symbol "&" when expecting one of the following..."
even when i checked the "Use Generic Column Names (parse query at runtime only)" check box it gave me this error in runtime.
so, what should i do ??

Parse SQL: How to extract column names, table names from a SQL query

Hi all,
I have a requirement wherein a SQL query will be given in a text file.
The text file has to be read (probably using text_io package), the SQL query needs to be parsed and the column names, table names and where clauses have to be extracted and inserted into separate tables.
Is there a way to do it using PL/SQL ?
Is there a PL/SQL script available to parse and extract column names, table names etc ?
Pls help.
Regards,
Sam

I think I jumped to conclusion too early saying it is completely possible and straight forward. But after reading through your post for one more time I realised you are not interested only in the column_names, also the table_names and the predicates .
>
SQL query needs to be parsed and the column names
>
The above is possible and straight forward using the dbms_sql package.
I am pasting the same information as I did in the other forum.
Check this link and search for Example 8 and .
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14258/d_sql.htm#sthref6136
Also check the working example from asktom
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1035431863958
>
table names and where clauses have to be extracted
>
Now this is the tricky bit. You can extract the list of tables by getting the sql_id from v$sql and joining it with v$sql_plan. But sometimes you may not get all the results because the optimizer may choose to refine your query (check this link)
http://optimizermagic.blogspot.com/2008/06/why-are-some-of-tables-in-my-query.html
and you can get the predicate information from the same table v$sql_plan but I will leave that area for you to do some R&D.
Regards
Raj
Edited by: R.Subramanian on Dec 10, 2008 3:14 AM

How to list column names and data types for a given table using SQL

I remember that it is possible to use a select statement to list the column names and data types of databaase tables but forgot how its done. Please help.

You can select what you need from DBA_TAB_COLUMNS (or ALL_TAB_COLUMNS or USER_TAB_COLUMNS).

How To Concatenate Column Values from Multiple Rows into a Single Column?

How do I create a SQL query that will concatenate column values from multiple rows into a single column?
Last First Code
Lesand Danny 1
Lesand Danny 2
Lesand Danny 3
Benedi Eric 7
Benedi Eric 14
Result should look like:
Last First Codes
Lesand Danny 1,2,3
Benedi Eric 7,14
Thanks,
David Johnson

Starting with Oracle 9i
select last, first, substr(max(sys_connect_by_path(code,',')),2) codes
from
(select last, first, code, row_number() over(partition by last, first order by code) rn
from a)
connect by last = prior last and first = prior first and prior rn = rn -1
start with rn = 1
group by last, first
LAST       FIRST      CODES
Lesand         Danny          1,2,3
Benedi         Eric           7,14Regards
Dmytro

How to find column names in a table

Am learning the basics of SQL Plus.
Have entered the following query:
SELECT * FROM t_ebb_session;
This gives me the following output.
USER_ID SESSION_ID LAST_ACCE
However LAST_ACCE is not the full name of the column as I get 'Invalid column name when I use it in a select statement.
How do I display the full name?

By default, SQL*Plus will set the column display width of a character column to its size in the database, and the heading will be the column name in uppercase, truncated to fit that width if necessary. (There is a different rule for numeric columns.)
You can override this with the COLUMN command, e.g:
COLUMN some_column_name FORMAT a30 HEADING "Alternative Name"
Check out the SQL*Plus documentation for all the COLUMN options.

How to concatenate column name in PL/SQL

Similar Messages

Maybe you are looking for