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

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Hi,
Lets take an example here in the post given below.
Re: Conditional forms
Column Captions = Codigo,Descripcion
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Column Widths = 10,200
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Please let me know if you have any more questions.
Regards
Nitesh

Column name in a query contains special characters

Hi folks,
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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.
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Hi People..
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Using case sensitive names and names with spaces in it is not a good practice.
However, I believe the SQL standard accounts for this with quoted identifiers. I believe the syntax is
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. from "My Table'
Have also seen the following although it might be MS Access specific.
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Hi,
Hope someone can assist quite quickly. I'm after a query that will return me both column name together with column data, i.e
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COL2 - currently has the value of 'HELLO'
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Like this ?
SQL> select empno, ename, deptno from emp where deptno = 10;
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SQL> select decode(t.id,1,'EMPNO',2,'ENAME',3,'DEPTNO') COLNAME,
2 decode(t.id,1,to_char(empno),2,ename,3,deptno)
3 from (select emp.*, rownum rn from emp
4 where deptno = 10) emp, (select rownum id from dict where rownum <=3) t
5 order by emp.rn, t.id
6 /
COLNAM DECODE(T.ID,1,TO_CHAR(EMPNO),2,ENAME,3,D
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ENAME CLARK
DEPTNO 10
EMPNO 7839
ENAME KING
DEPTNO 10
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ENAME MILLER
DEPTNO 10
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I am writing an application using Adobe Air, Sqlite, and Javascript.
After writing the following select statement:
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I would like to get the columnName/data combination from each row -- which I do successfully with a loop:
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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.
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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++) {
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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.

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try these links as reference/:
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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

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
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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
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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 );
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                p_value     => l_column_value_list2(l_column).value_list(l_row) );
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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

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hi,
I created a resultSet by executing query with more then one table in it. (left join)
and now i want to getObject. so I execute resultSet.getObject("tablename.columnName")
and I get this error "invalid column name".
when i'm doing the same thing with MySQL it works fine.
I don't want to do aliases for all the columns because there are too much of those.
please help.
thanks,
asaf.

that's not standard JDBC. You must use either the plain column name,
or the column number. In cases where there are multiple columns with
the same name you must use the column number for all but the first
column with the same name.
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ResultSetMetaData.getColumnLabel(int coluN) gives column name with quote

I am using ojdbc14.jar for "Oracle Database 10g Enterprise Edition Release 10.2.0.3.0". My query is "Select 'column name' from dual". When i get column name using ResultSetMetaData.getColumnLabel(int coluN) it return column name including single quotes ie: for the above query result is 'columname'. Ideally it should not return ' (single quote).
Why do this happening?

You will have that even when you run with sqlplus.
=
Ashok

Problem using Hadoop with Power Query

I'm trying to connect my Power Query with Hadoop data.
I can see a list of my hadoop files but when I click on "Binary"
I have this error message.
Error Details : -
DataSource.Error: HDFS cannot connect to server 'localhost'. Unable to connect to the remote server.
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It looks like WebHDFS isn't configured correctly. The way WebHDFS works is that you first connect to the name node and the name node does an HTTP redirect to the data node to fetch the data from there. From the error message, it looks like the
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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
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/

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.
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Justin

JTable column names with custom model

I'm having problems with column names in a JTable which uses a custom model. For some reason, the colums are being shown as A, B, C etc. The data, however, displays fine.
This is the code which constructs the table.
MyTableModel tableModel = new MyTableModel(myArrayList);
myTable = new JTable(tableModel);
myTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
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class MyTableModel extends AbstractTableModel {
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Oh great. I'll go back under my rock.
Thanks =)

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Can someone please suggest a solution? Here is the function:
create or replace FUNCTION FN_GET_PAYRATE(tc in NUMBER, e in NUMBER, pc in VARCHAR2)
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IS
e_id NUMBER;
tc_id NUMBER;
pl_cd VARCHAR2(7);
shft VARCHAR2(2);
lvl VARCHAR2(2);
typ VARCHAR2(2);
e_typ VARCHAR2(4);
proj NUMBER;
hrly VARCHAR2(4);
payrt NUMBER;
var_col VARCHAR2(10);
sql_select VARCHAR2(200);
sql_from VARCHAR2(200);
sql_where VARCHAR2(200);
sql_and1 VARCHAR2(200);
sql_and2 VARCHAR2(200);
sql_and3 VARCHAR2(200);
sql_orderby VARCHAR2(200);
var_sql VARCHAR2(2000);
BEGIN
e_id := e;
tc_id := tc;
pl_cd := pc;
SELECT NVL(SHIFT,'D') INTO shft
FROM TS_TIMECARD_MAIN
WHERE TIMECARD_ID = tc_id;
--DBMS_OUTPUT.PUT_LINE('SHIFT= ' || shft);
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INTO lvl, typ, e_typ, proj
FROM TS_EMPLOYEES
WHERE EMP_ID = e_id;
--DBMS_OUTPUT.PUT_LINE('Level= ' || lvl);
--DBMS_OUTPUT.PUT_LINE('PAY_TYPE= ' || typ);
--DBMS_OUTPUT.PUT_LINE('EMP_TYPE= ' || e_typ);
--DBMS_OUTPUT.PUT_LINE('PROJECT= ' || proj);
IF e_typ <> 'LHD' THEN
hrly := 'H';
ELSE
hrly := '';
END IF;
IF proj <> 001 THEN
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--DBMS_OUTPUT.PUT_LINE('RATE COLUMN= ' || var_col);
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sql_from := ' FROM TS_PAYRATES';
sql_where := ' WHERE PROJECT_ID = ' || proj;
sql_and1 := ' AND ACTIVE = 1';
sql_and2 := ' AND JOB_TYPE = ' || CHR(39) || e_typ || CHR(39);
sql_and3 := ' AND PILE_ID = ' || CHR(39) || pl_cd || CHR(39);
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DBMS_OUTPUT.PUT_LINE('SQL: ' || var_sql);
EXECUTE IMMEDIATE var_sql;
DBMS_OUTPUT.PUT_LINE('RATE= ' || payrt);
RETURN payrt;
ELSE
DBMS_OUTPUT.PUT_LINE('ERROR');
RETURN 1;
END IF;
END;
I have alternately tried this:
SELECT NVL(var_col,.01) into payrt
FROM TS_PAYRATES
WHERE PROJECT_ID = proj AND ACTIVE = 1
AND JOB_TYPE = CHR(39) || e_typ || CHR(39)
AND PILE_ID = CHR(39) || pl_cd || CHR(39);
as a substitute for the EXECUTE IMMEDIATE block, but I can't seem to use a dynamic substitution for the column name.
Any help would be greatly appreciated.

That's the most difficult part - the error messages seem to indicate a problem with the SQL statement in its execution context, because I can take the SQL string by itself and it executes perfectly.
Here are three variations:
SELECT INTO
select fn_get_payrate(21555, 30162, 15) from dual
ERROR at line 1:
ORA-00905: missing keyword
ORA-06512: at "PEOPLENETIF.FN_GET_PAYRATE", line 60
SQL: SELECT NVL(N4P , .01) INTO payrt FROM TS_PAYRATES WHERE PROJECT_ID = 701 AND ACTIVE = 1 AND JOB_TYPE = 'LHD' AND PILE_ID = '15'
Without SELECT INTO (returns NULL)
SQL> select fn_get_payrate(21555, 30162, 15) from dual;
FN_GET_PAYRATE(21555,30162,15)
SQL: SELECT NVL(N4P , .01) FROM TS_PAYRATES WHERE PROJECT_ID = 701 AND ACTIVE = 1 AND JOB_TYPE = 'LHD' AND PILE_ID = '15'
RATE=
EXECUTE IMMEDIATE USING
SQL> select fn_get_payrate(21555, 30162, 15) from dual;
select fn_get_payrate(21555, 30162, 15) from dual
ERROR at line 1:
ORA-01006: bind variable does not exist
ORA-06512: at "PEOPLENETIF.FN_GET_PAYRATE", line 61
SQL: SELECT NVL(N4P , .01) FROM TS_PAYRATES WHERE PROJECT_ID = 701 AND ACTIVE = 1 AND JOB_TYPE = 'LHD' AND PILE_ID = '15'

Lookup column names with Power Query

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