Result of an SQL query as a Column name of another query

Hi Friends,
Can we use a result of a SQL Query as a column name of another table to retrieve data. If so please help me.
For eg :
I have a table where is store numbers;
select col1 from table1 where col1='5';
and i have another table where .. this value of col is a column name..
select ( select col1 from table1 where col1='5') from table2;
Thanks in advance.

Hi,
ORAFLEX wrote:
Hi Friends,
Can we use a result of a SQL Query as a column name of another table to retrieve data. If so please help me.
For eg :
I have a table where is store numbers;
select col1 from table1 where col1='5';
and i have another table where .. this value of col is a column name..
select ( select col1 from table1 where col1='5') from table2;
Thanks in advance.Do you really mean that?
select col1 from table1 where col1='5';That query will always return either '5' or nothing. Whatever you're trying to accomplish with that, you can do with an EXISTS query.
Perhaps you meant to reference two different columns in that query:
select col1 from table1 where col2='5';In that case, sorry, no, you can't do that without resorting to dynamic SQL.
If the same column is used throughout the query (but could change every time you run the query), then the dynamic SQL might be pretty easy. In SQL*Plus, for example, you could use substitution variables, defined in another query at run-time.
If there are only a few possible values that the sub-query could possibly return, and you know what they all are, then you can fake a dynamic query like this:
SELECT     CASE     ( SELECT col1
            FROM       table1
            WHERE       col2     = '5'
          WHEN 'BONUS'     THEN bonus
          WHEN 'COMM'     THEN comm
          WHEN 'SAL'     THEN sal
     END     AS col1
FROM     table2
;Sorry to give such a vague answer, but it's the best I can do with the information I have.
It would help if you posted a little sample data (CREATE TABLE and INSERT statments for both tables), and the results you want to get from that data. If you want to pass a parameter to the query, give the results you want for a couple of different parameters.

Similar Messages

Column name in a query contains special characters

Hi folks,
The column name in a query contains special characters. For example ~ or ^. The creator of the table put these column names under double quotation while creating the table. When I get the column names form the result set meta data object it returns without quotation. Is there any way to tell the jdbc driver so that it return those column names as it was created, I mean in double quotation.
The help is urgent. I will appreciate any suggestions. Thanks �.
[using oracle driver for 10g]
Thanks
Angelina

Just because the column names were in quotations when the database was created doesn't mean that the quotes are actually part of the names. What's inside the quotes is what makes the column name in the database. If I created a column as "abcd" and put it in quotes just like that ("abcd"), it would go in the database as abcd since SQL would strip off the quotes.
And there's your answer. Just put all column names in quotes whenever you need to talk to SQL. It will strip off the quotes and understand.
I think SQL will also accept square brackets ([ and ]).

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

What is the order of Column Names in Sqlite query results?

I am writing an application using Adobe Air, Sqlite, and Javascript.
After writing the following select statement:
          SELECT field1, field 2, field 3, field 4 FROM TableA;
I would like to get the columnName/data combination from each row -- which I do successfully with a loop:
          var columnName="";
          for (columnName in selResults.data[i]) {
               output+=columnName + ":" + selResultsdata[i][columnName] + ";";
My issue is that the column names come out in a different order every time I run the query and never once have they come out in the desired order -- field 1, field 2, field 3, field 4. If I run the query in Firefox's Sqlite Manager, the columns come out in the "proper" order. When I run them in Adobe Air, the order will be the same if I run the query mulitple times without closing the app. If I make a change such as declaring the columnName variable with "" before the for column, or declare it as (var = columnName in selResults.data) , then the order changes. If I shut down my app and re-open after lunch and run query, it comes out in another order. At this time, I'm not interested in the order of the rows, just the order of the columns in each output row. I've even tried assiging an index to columnName which seems to just pick up a single letter of the columnName.
I'm in the process of changing my HTML presentation of the data to assign a precise columnName to an HTML table title, but I'm reluctant to let go of the above concept as I think my separation of HTML/presentation and Javascript would be better if I could use the solution described above.
So, does anybody know how to force the order of the columnNames in my output -- or what I'm doing to cause it to come out in a different order?
Jeane

Technically there isn't any "order" for the return columns. They aren't returned as an Array -- they're just properties on an Object instance (a "generic object"). The random order you're seeing is the behavior of the for..in loop iterating over the properties of the object. Unfortunately, with a for..in loop there is no guaranteed order for iterating over properties (and, as you've seen, it tends to vary wildly).
The only solution is to create your own list of the column names and sort it the way you want to, then use that to create your output. For example, use the for..in loop to loop over the properties, but rather than actually get the values, just dump the column names into an Array:
var columnName="";
var columns = [];
for (columnName in selResults.data[i]) {
    columns.push(columnName);
columns = columns.sort(); // just uses the default alphabetical sort -- you would customize this if desired
var j = 0;
for (j = 0; j < columns.length; j++) {
    columnName = columns[j];
    output+=columnName + ":" + selResultsdata[i][columnName] + ";";

How to retrieve column names in a query in a case sensitive way

Given a query, I want to extract all the column names/aliases in the query in a case-sensitive way.
When I use dbms_sql.describe_columns() or java.sql.ResultSetMetaData classes getColumnName() or getColumnLabel()
it returns the columns name ONLY in Upper case.
My application needs to extract the column names in the same case as it appears in the query string.
Is there any API to get this without parsing the SQL query string?
Thanks
PS: The dbms_sql.describe_columns() returns the column name in upper case.
declare
IS
l_column_recs DBMS_SQL.DESC_TAB;
l_cur NUMBER;
l_column_count NUMBER;
BEGIN
l_cur := dbms_sql.open_cursor;
dbms_sql.parse(l_cur, 'select target_type from targets', dbms_sql.NATIVE);
dbms_sql.describe_columns(l_cur, l_column_count, l_column_recs);
FOR i IN l_column_recs.FIRST..l_column_recs.LAST
LOOP
dbms_output.put_line(l_column_recs(i).col_name);
end loop;
end;
/

As far as the result set is concerned, though, the column name is in all upper case. If you query the data dictionary, you would see that the TARGET_TYPE column in the TARGETS table is stored in upper case.
The way Oracle works is that column names that are not enclosed in double-quotes are converted to upper case in the data dictionary and elsewhere and then Oracle looks for the column name in the table definition. That is what allows Oracle to have case-insensitive identifiers unless a user specifies case-sensitive identifiers by enclosing the identifier in double quotes.
If you changed the query to be
SELECT target_type as "target_type"
FROM targetsOracle should report the alias in a case sensitive fashion because you've now indicated that the alias should be treated as case sensitive.
Justin

Get the column names of a query (in own plugin)

Hi,
I'm developing my first plugin. It is a region plugin where the plugin-user passes a sql query as the source that the plugin will turn into a formated report.
I found how to retreive the query result by using APEX_PLUGIN_UTIL.GET_DATA functions. Since it is an array, it is simple to cycle through the data rows. But how can i figure out
1) how many columns the query returns
2) whats the name of the columns is?
Thanks a lot in advance for any hint...
Cheers, Hans

Hi Hans,
the package APEX_PLUGIN_UTIL provides everything you need. No need to do your own DBMS_SQL handling!
Have a look at the API documentation and the example of GET_DATA at http://docs.oracle.com/cd/E23903_01/doc/doc.41/e21676/apex_plugin_util.htm#BABFBIJD
The t_column_value_list record type is a two dimensional array defined as
type t_column_value_list is table of wwv_flow_global.vc_arr2 index by pls_integer;The first array contains an entry for each column.
l_column_value_list.COUNTcan be used to get the number of columns.
l_column_value_list(1).COUNTcan be used to get the number of rows. An example to iterate over all columns and rows:
for l_column in 1 .. l_column_value_list.count loop
    for l_row in 1 .. l_column_value_list(l_column).count loop
        sys.htp.p('column#=' || l_column || ' row=' || l_row || ' value: ' || l_column_value_list(l_column)(l_row));
    end loop;
end loop;If you need the name of the columns and maybe the original data type and not everything converted to VARCHAR2 you have to use the more sophisticated GET_DATA2. See http://docs.oracle.com/cd/E23903_01/doc/doc.41/e21676/apex_plugin_util.htm#BABFJHAI
This function returns the record type t_column_value_list2 which is defined as
type t_value is record (
    varchar2_value      varchar2(32767),
    number_value        number,
    date_value          date,
    timestamp_value     timestamp,
    timestamp_tz_value timestamp with time zone,
    timestamp_ltz_value timestamp with local time zone,
    interval_y2m_value interval year to month,
    interval_d2s_value interval day to second,
    blob_value          blob,
    bfile_value         bfile,
    clob_value          clob );
type t_value_list is table of t_value index by pls_integer;
type t_column_values is record (
    name       varchar2(32767),
    data_type varchar2(20), /* use c_data_type_* constants to compare */
    value_list t_value_list );
type t_column_value_list2 is table of t_column_values         index by pls_integer;Again, it's some kind of two dimensional array. The first dimensions are the columns. But this time you also get some details of the parsed column. For example:
for l_column in 1 .. l_column_value_list2.COUNT loop
    sys.htp.p('Column Name: ' || l_column_value_list2(l_column).name || ' Data Type: ' || l_column_value_list2(l_column).data_type );
end loop;Will return you all the columns of the SQL statement. Using "name" and "data_type" you can get the column name and the data type. To access the values you can use
for l_column in 1 .. l_column_value_list2.COUNT loop
    sys.htp.p('Column Name: ' || l_column_value_list2(l_column).name || ' Data Type: ' || l_column_value_list2(l_column).data_type );
    for l_rows in 1 .. l_column_value_list2(l_column).value_list.COUNT loop
        sys.htp.p(
            'row=' || l_row || ' value: ' ||
            apex_plugin_util.get_value_as_varchar2 (
                p_data_type => l_column_value_list2(l_column).data_type,
                p_value     => l_column_value_list2(l_column).value_list(l_row) );
    end loop;
end loop;I used apex_plugin_util.get_value_as_varchar2 to always get a VARCHAR2, independent of the actual data type of the column. If you need the original data type, use "number_value", ... of the t_value record type.
Hope that gives you a direction
Patrick
Regards
Patrick
My Blog: http://www.inside-oracle-apex.com
APEX Plug-Ins: http://apex.oracle.com/plugins
Twitter: http://www.twitter.com/patrickwolf

ORA-00904: invalid column name in select query by using abstract datatype

Hi,
I had created abstract datatype as PERSON_TY and ADDRESS_TY ,
after inserting the record . i'm tryng to select the column but i got the error , even i refferd all those thing. they are given that same please look this finde me a result.
SQL> DESC PERSON_TY
Name Null? Type
NAME VARCHAR2(25)
ADDRESS ADDRESS_TY
SQL> DESC ADDRESS_TY
Name Null? Type
STREET VARCHAR2(30)
CITY VARCHAR2(25)
STATE CHAR(2)
COUNTRY VARCHAR2(15)
SQL> SELECT * FROM EMPLOYE
2 ;
EMP_CODE
PERSON(NAME, ADDRESS(STREET, CITY, STATE, COUNTRY))
10
PERSON_TY('VENKAT', ADDRESS_TY('112: BLUE MOUNT', 'CHENNAI', 'TN', 'INDIA'))
20
PERSON_TY('SRINI', ADDRESS_TY('144: GREEN GARDEN', 'THAMBARAM', 'TN', 'INDIA'))
SQL> SELECT PERSON.NAME FROM EMPLOYE
2 ;
SELECT PERSON.NAME FROM EMPLOYE
ERROR at line 1:
ORA-00904: invalid column name
regards
venki

SELECT PERSON.NAME FROM EMPLOYEIf you look in the documentation, you will see that we need to alias the table in order to make this work:
select e.person.name from employees e
/Cheers, APC
Blog : http://radiofreetooting.blogspot.com

Retrieving Column Names from a Query

I need to be able to generate XML that looks like this:
<Categories>
<Category Name='Arrivals'/>
<Category Name='Departures'/>
<Category Name='Unused'/>
<Category Name='Out of Commission'/>
</Categories>
Where the name attribute value is the name of columns in a query. For example, a standard SQL query might look something like this:
select
year, arrivals, departures, unused, out_of_commission
from
some_table
I am able to generate the XML that represents the data just fine. However, my vended application is requiring this column header information. I've browsed and searched the XMLDB documentation but could not see a way to retrive the column names returned by the query. I think I Just need to be pointed in the right direction.
Thanks,
Steve

What technique are you itending using to generate the XML ?.
Does something like this work
select xmlelement("Categories",
xmlelement("Category", xmlattributes('Arrivals' as "Name"), Arrivals),
xmlelement("Category", xmlattributes('Departures' as "Name"), Departures),
xmlelement("Category", xmlattributes('Unused' as "Name"), Unsused),
xmlelement("Category", xmlattributes('Out Of Commission' as "Name"), Out_of_Commission)
from some_table

Order query depending on column names passed at runtime

Hi
Can any one suggest how to order by at run time depending on column name passed as parameter.
create or replace procedure dummy_proc( p_orderby varchar2,p_refcursor out sys_refcursor)
is
begin
     open p_refcursor for select * from
     emp where Status='A'
          order by (select p_orderby from dual);
end;
--execution part for testing
declare
     v_outcursor sys_refcursor;
     v_rec_data emp%rowtype;
     v_cnt number;
begin
     dummy_proc ('ename,sal',v_outcursor);
     begin
          loop
               fetch v_outcursor into v_rec_data;
               v_cnt:=v_outcursor%rowcount;
               exit when v_outcursor%notfound;
               dbms_output.put_line('empno '|| to_char(v_rec_data.empno));
               dbms_output.put_line('empno '|| v_rec_data.ename);
          end loop;
     end;
     dbms_output.put_line('Count is'|| to_char(v_cnt));
end;
we do not want to something like below as my actual query is very big with union statements and case expressions, (below is just an similar example)
how i tried to order by but its not working.
v_sql='select * from emp where empno= '|| p_empno || ' order by '|| p_orderby;
open p_refcursor for v_sql;
Thanks in advance
Vishal

we do not want to something like below as my actual
query is very big with union statements and case
expressions, (below is just an similar example)
how i tried to order by but its not working.
v_sql='select * from emp where empno= '|| p_empno ||
' order by '|| p_orderby;
open p_refcursor for v_sql;I agree, you really don't want to do that, you want to use BIND VARIABLES.
v_sql := ' select * from emp where empno = :bound_empno order by :bound_orderby';
open p_refcursor for v_sql using p_empno, p_orderby;
[pre]
The size of the statement shouldn't come in to play, if the only dynamic portion of it is the order by clause then declare a constant which is the large query (you can use a LONG datatype) and then concatenate in the order by clause before you return the reference cursor.
Unless you can give a legitimate reason for why you cannot use Dynamic SQL (not why you do not want to use it) this would be my approach.
And please, if you don't know what a bind variable is...read about them, or your system will suffer.

Performancepoint Hierarchy Disable Drill Down Level on changing Column name in MDX query

Hello All,
I have created a report in Performance Point dashboard designer but when I change Column name (Measure Name) in MDX query this causes all the built-in ad hoc
navigation and decomposition tree functionality that PP provides to become disabled. Is there any solution or alternative way to achieve this. Please provide solution for this.
Thanks in advance.
Sapna Kshirsagar

try these links as reference/:
https://support.office.com/en-nz/article/Getting-acquainted-with-PerformancePoint-Dashboard-Designer-9e014283-afec-4819-87b9-78be6f6ef0d0?ui=en-US&rs=en-NZ&ad=NZ
https://technet.microsoft.com/en-us/library/ee748644%28v=office.15%29.aspx
https://support.office.com/en-gb/article/Creating-scorecards-by-using-PerformancePoint-Dashboard-Designer-2faa3bd6-c361-4c26-a7f9-b81227c875d8
https://msdn.microsoft.com/en-us/library/office/ee557851%28v=office.15%29.aspx
Please mark answer as correct if it is correct else vote for it if you find it useful Happy SharePointing

Lookup column names with Power Query

Hi,
before I go ahead and change source files, I was wondering if I can use Power Query to get a model with the following data. To simplify the example, I have the following dataset in an Excel sheet:
In another Excel sheet, the column names are defined, for example:
What would like to have in Power Query is one table with the column names from the second screenshot in column B. Is there a way to link these two tables together in Power Query in order to use these names as column headers in the dataset?
Thanks!
- If a post answers your question, please click "Mark As Answer" on that post!

You can filter the list of renames against the list of actual column names with something like
FilteredColumns = Table.SelectRows(Columns, each List.Contains(Table.ColumnNames(Source), [Name])),
Again, the working end-to-end:
let
Source = Table.FromRows({{"New York", 23, 51, 732}, {"Chicago", 25, 421, 23}, {"Los Angeles", 632, 22, 423}}, {"City", "Col 1", "Col 2", "Col 3"}),
Columns = Table.FromRows({{"Col 1", "Column 1"}, {"Col 2", "Column 2"}, {"Col 3", "Column 3"}, {"Col 4", "Column 4"}}, {"Name", "Value"}),
FilteredColumns = Table.SelectRows(Columns, each List.Contains(Table.ColumnNames(Source), [Name])),
ColumnsAsRenames = Table.TransformRows(FilteredColumns, Record.FieldValues),
RenamedColumns = Table.RenameColumns(Source, ColumnsAsRenames)
in
RenamedColumns

Migrating from Sql Server tables with column name starting with integer

hi,
i'm trying to migrate a database from sqlserver but there are a lot of tables with column names starting with integer ex: *8420_SubsStatusPolicy*
i want to make an offline migration so when i create the scripts these column are created with the same name.
can we create rules, so when a column like this is going to be migrated, to append a character in front of it?
when i use Copy to Oracle option it renames it by default to A8420_SubsStatusPolicy
Edited by: user8999602 on Apr 20, 2012 1:05 PM

Hi,
Oracle doesn't allow object names to start with an integer. I'll check to see what happens during a migration about changing names as I haven't come across this before.
Regards,
Mike

Column names from another table

Hi All,
I have a scenario where i need to get names of a column from another table
for eg,
Table EMP
EmpNo EmpName EmpContact EmpPhone
1 xyz [email protected] 345
2 abc [email protected] 897
3 ttp [email protected] 345
The column names of this table can be configurable from some other place and its value is stored in another table like
Table Config (2 Columns)
Column_Name Value
EmpName First name
EmpContact Email
EmpPhone Mobile
Now i want to fetch the values from Emp table but with column headers that are changed and have a value in Config table.
If a column name is not there in config table then the original column name should come.
As shown below
EmpNo First name Email Mobile
1 xyz [email protected] 345
2 abc     [email protected] 897
3 ttp [email protected] 345
Another eg, If EmpName is not changed and entered in second table , then i want to have the same name as the original EMP table has as shown below.
EmpNo EmpName Email Mobile
1 xyz [email protected] 345
2 abc     [email protected] 897
3 ttp [email protected] 345
In other words something like this,
select empno,
EmpName as (select value from config where column_name=EmpName),
               EmpContact as (select value from config where column_name=Empcontact),
               EmpPhone as (select value from config where column_name=EmpPhone)
     From EMP
Can some one please help me in providing a solution for this.
Edited by: 941386 on May 30, 2013 6:20 AM

Unfortunately, I think this is a job for dynamic sql ...
Build your "query" first:
(note this won't work "as is", fix the syntax - but you get the idea.)
lv_str := 'select empno,
EmpName as ' || (select value from config where column_name=EmpName) || ',
EmpContact as ' || (select value from config where column_name=Empcontact) || ',
EmpPhone as ' || (select value from config where column_name=EmpPhone) || '
From EMP;';
execute immediate lv_str;Not sure if there's a better way or not.
Only other way I can think of is to leverage the way UNION [ALL] works.
So the following query:
select a, b, c from dual
union all
select d, e, f from dual
/returns data in columns "named" : "a, b, c"
Effectively renaming columns d, e, f. You just need to turn your data on edge in that first query, then throw out the rows (I don't know how to get it to work, but perhaps somebody else does?)
[edit]
another thought is create a view over top of the table, query that view, then drop the view :P
that would work nicely - avoid the dynamic SQL. shrug
[edit]
Edited by: Greg.Spall on May 30, 2013 9:37 AM

Bex Query: Too many table names in the query The maximum allowable is 256

Hi Experts,
I need your help, Im working on a Query using a multiprovider of 2 datastores, I need to work with cells to assign specific acconts values to specific rows and columns, so I was creating a Structure with elements from a Hierarchy, but I get this error when I'm half way of the structure:
"Too many table names in the query. The maximum allowable is 256.Incorrect syntax near ')'.Incorrect syntax near 'O1'."
Any idea what is happening? is ti possible to fix it? do I need to ask for a modification of my Infoproviders? Some one told me is possible to combine 2 querys, is it true?
Thanks a lot for your time and pacience.

Hi,
The maximum allowable limit is 256 holds true. It is the max no. of characteristics and key figures that can be used in the column side. While creating a structure, you create key figures (restricted or calculated) and formulas etc.. The objects that you use to create these should not be more than 256.
http://help.sap.com/saphelp_nw70/helpdata/EN/4d/e2bebb41da1d42917100471b364efa/frameset.htm
Not sure if combination of 2 query's is possible. You can use RRI. Or have a woorkbook with 2 queries.
Hope it helps.

Filter a Query Based on the Output of Another Query

Is it possible to run a query based on the put put of another query? I have two queries. One query is based on GL Line items and shows the account assignemnt of postings where a customer has had a debt raised and it been credited to an account assignment e.g. Order, Cost Centre or Profit Centre. The other query is on an AR cube and that shows payment made. I want to bring these together to show the owners of the various account assignments to what extent customers have actually paid the debts that have been raised and credited to them. This I do as the source document of the CO doscument matches the allocation of the ar document. So I have a query that shows the CO journal and another query that shows payments. But I only want to show the payments in the second query for documents displayed in the first query (which can be restricted by period and fiscal year and the particular account assignment).

Hi,
This can be acheived by usign a replacement path variable.
Create replacement pathe variables for those the filter values in the second report nneds tobe restricted from the first.
Then in the properties of the varioable say replce by query result and input the first query name in it.
Use these variables in teh filter section of the second report.
Make sure the characteristics for which you created the replacement path variables are in teh row section of the first Query.
Now on executing the second query you will have it filtered based on teh values of the first Query.
Hope this helps.
Regards.
Shafi.

Result of an SQL query as a Column name of another query

Similar Messages

Maybe you are looking for