Number of columns of the rows in a ResultSet?

Hello
Is there any way to get the amount of columns of the rows in a ResultSet? The values of the columns might be empty, so wasNull() wont work?
Thanks

Yes, you can see the number of columns and lots of other info, see ResultSetMetaData. Example:
ResultSet rs = statement.executeQuery("...");
ResultSetMetaData rsmd = rs.getMetaData();
System.out.println("Number of columns: " + rsmd.getColumnCount());Look it up in the API documentation.

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tab --
Here's where to read up on your question.
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Hi All,
I have created my warehouse in MS SQL 2012.
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[nQSError:16002] Cannot obtain number of columns for the query result.
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Where is the "reference tab's pop-up menu" in this instruction, "To hide a single row or column, choose Hide Row or Hide Column from the row or column reference tab's pop-up menu."

Where is ref tab's pop-up menu?

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Number of columns in the Report Attributes

Hi,
In the report attributes, there are around 100 columns, but I am able to see around 70. If i want to change the order of the columns i need to view everything. What is the solution for this?
Regards,
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ALV List in the same Column for the row CELL i need button or value

Hi,
In my ALV list for the same column I need Button or Value for the different rows (CELL) depending upon my condition.
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Here is how you can make a particular cell in the row read-only based on certain conditions.
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data: lr_input_node type ref to if_wd_context_node,
        lr_flight_node type ref to if_wd_context_node,
        lv_cityfrom   type s_from_cit,
        lv_cityto     type s_to_city,
        ls_from       type bapisfldst,
        ls_to         type bapisfldst,
        lt_flights    type table of bapisfldat,
        ls_flights    type bapisfldat.
data: lt_final type if_mainview=>elements_node_flighttab,
        ls_final type if_mainview=>element_node_flighttab.
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lr_input_node = wd_context->get_child_node( name = 'NODE_FLIGHT' ).
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ls_from-city = lv_cityfrom.
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* Call the function BAPI_FLIGHT_GETLIST
call function 'BAPI_FLIGHT_GETLIST'
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     destination_to         = ls_to
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     flight_list            = lt_flights.
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loop at lt_flights into ls_flights.
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Hi,
I did example
http://apex.oracle.com/pls/otn/f?p=40323:57
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I did set Column Template 1 conditionally "Use Based on PL/SQL expression".
Column Template 1 Expression
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Template 2 Expression
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This might help also
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Edited by: jarola on May 11, 2010 11:24 PM

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C1 | C2 | C3 | C4
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Multiple columns for the rows

Hello everyone,
Can anyone give me a logic in the below scenario.
Table A
Col1 Col2 Col3
Peter 01-jan-2009 1000
Peter 7-mar-2009 1000
Peter 13-dec-2009 1000
i need a sql which displays all the data in a single row in such a way that
1) if col2 month is jan, then the column heading should be "January" and value should be Jan
2) if col2 month is mar, then the column heading should be "Marchh" and value should be Mar
3) if col2 month is dec, then the column heading should be "December" and value should be Dec
Thank you in advance.

This may help
WITH DATA AS (
SELECT 'Peter' NAME,to_char(to_date('01-jan-2009','dd-mon-yyyy'),'MON') MON, 1000 salary FROM dual UNION
SELECT 'Peter' NAME,to_char(to_date('07-mar-2009','dd-mon-yyyy'),'MON') MON, 1000 salary FROM dual UNION
SELECT 'Peter' NAME,to_char(to_date('13-dec-2009','dd-mon-yyyy'),'MON') MON, 1000 salary FROM dual
SELECT NAME,max(decode(mon,'JAN',salary)) jan,
max(decode(mon,'FEB',salary)) FEB,
max(decode(mon,'MAR',salary)) MAR,
max(decode(mon,'APR',salary)) APR,
max(decode(mon,'MAY',salary)) MAY,
max(decode(mon,'JUN',salary)) JUN,
max(decode(mon,'JUL',salary)) JUL,
max(decode(mon,'AUG',salary)) AUG,
max(decode(mon,'SEP',salary)) SEP,
max(decode(mon,'OCT',salary)) OCT,
max(decode(mon,'NOV',salary)) NOV,
max(decode(mon,'DEC',salary)) DEC
        FROM DATA
GROUP BY NAME
NAME     JAN     FEB     MAR     APR     MAY     JUN     JUL     AUG     SEP     OCT     NOV     DEC
Peter      1000          1000                                             1000cheers!!!
Bhushan
Edited by: Buga on Nov 2, 2009 10:38 PM

Radio group in classic report based on another column on the same row.

Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
Application Express 4.1.0.00.32
How can I have a radio group column based on an LOV utilizing another column on the same row of the report?
For example: what if I had a survey application and depending on the likert scale that was assigned to the question there would be different possible answer choices:
Question 1 on row 1 of the report: The class instructor was friendly?
Likert scale choice is Agreement.
Choices on Radio Group: Strongly Agree, Agree, Undecided, Strongly Disagree
Question 2 on row 2 of the report: The class offered good materials?
Likert scale choice is Quality.
Choices on Radio Group: Excellent, Below Average, Average, Above Average, Excellent
The radio group can change per row depending on the Likert scale assigned to the question which is assigned to a different column on the row.
Can LOV utilize the column? :
SELECT scale_text
FROM scale_choices
WHERE scale_category_choice_id = 2 <<= this would be the Likert scale identifier
ORDER
BY display_order

Here is the answer:
APEX_ITEM.SELECT_LIST_FROM_QUERY(
p_idx IN NUMBER,
p_value IN VARCHAR2 DEFAULT NULL,
p_query IN VARCHAR2,
p_attributes IN VARCHAR2 DEFAULT NULL,
p_show_null IN VARCHAR2 DEFAULT 'YES',
p_null_value IN VARCHAR2 DEFAULT '%NULL%',
p_null_text IN VARCHAR2 DEFAULT '%',
p_item_id IN VARCHAR2 DEFAULT NULL,
p_item_label IN VARCHAR2 DEFAULT NULL,
p_show_extra IN VARCHAR2 DEFAULT 'YES')
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I have a Data View Web Part .Now I have a column that contains either 'Yes' or 'No'
and i want to count the number of 'Yes' for the rows and column .
below image will help to understand better what i am tying to achieve.

Here is XSLT code , you may find this usefull
Row View Template :
<xsl:template name="dvt_1.rowview">
      <xsl:param name="Rows"/>
      <xsl:variable name="CountYesForAll" select="number((. = contains(@Richard,'Yes')))
       +number((. = contains(@AndrewP,'Yes')))
       +number((. = contains(@Damien,'Yes')))
       +number((. = contains(@AndrewC,'Yes')))
       +number((. = contains(@Tiffany,'Yes')))
       +number((. = contains(@David,'Yes')))
       +number((. = contains(@Tony,'Yes')))
       +number((. = contains(@Saj,'Yes')))
       +number((. = contains(@Miguel,'Yes')))
       +number((. = contains(@Viv,'Yes')))
       +number((. = contains(@Paula,'Yes')))
       +number((. = contains(@Helen,'Yes')))
       +number((. = contains(@Matthew,'Yes')))"/>
      <xsl:variable name="RichardsCount" select="count($Rows[(@Richard)='Yes'])"></xsl:variable>
      <xsl:variable name="AndrewPsCount" select="count($Rows[(@AndrewP)='Yes'])"></xsl:variable>
      <xsl:variable name="DamiensCount" select="count($Rows[(@Damien)='Yes'])"></xsl:variable>
      <xsl:variable name="AndrewCsCount" select="count($Rows[(@AndrewC)='Yes'])"></xsl:variable>
      <xsl:variable name="TiffanysCount" select="count($Rows[(@Tiffany)='Yes'])"></xsl:variable>
      <xsl:variable name="DavidsCount" select="count($Rows[(@David)='Yes'])"></xsl:variable>
      <xsl:variable name="TonysCount" select="count($Rows[(@Tony)='Yes'])"></xsl:variable>
      <xsl:variable name="SajsCount" select="count($Rows[(@Saj)='Yes'])"></xsl:variable>
      <xsl:variable name="MiguelsCount" select="count($Rows[(@Miguel)='Yes'])"></xsl:variable>
      <xsl:variable name="VivsCount" select="count($Rows[(@Viv)='Yes'])"></xsl:variable>
      <xsl:variable name="PaulasCount" select="count($Rows[(@Paula)='Yes'])"></xsl:variable>
      <xsl:variable name="HelensCount" select="count($Rows[(@Helen)='Yes'])"></xsl:variable>
      <xsl:variable name="MatthewsCount" select="count($Rows[(@Matthew)='Yes'])"></xsl:variable>
  <tr>
   <xsl:if test="position() mod 2 = 1">
    <xsl:attribute name="class">ms-alternating</xsl:attribute>
   </xsl:if>
   <xsl:if test="$dvt_1_automode = '1'" ddwrt:cf_ignore="1">
    <td class="ms-vb" width="1%" nowrap="nowrap">
     <span ddwrt:amkeyfield="ID" ddwrt:amkeyvalue="ddwrt:EscapeDelims(string(@ID))" ddwrt:ammode="view"></span>
    </td>
   </xsl:if>
   <td class="ms-vb">
    <xsl:value-of select="@Title"/>
   </td>
   <td class="ms-vb">
    <xsl:attribute name="style">
     <xsl:if test="normalize-space(@Richard) = 'NA'">background-color: #000000;</xsl:if>
    </xsl:attribute>
    <xsl:value-of select="@Richard"/>
   </td>
   <td class="ms-vb">
    <xsl:attribute name="style">
     <xsl:if test="normalize-space(@AndrewP) = 'NA'">background-color: #000000;</xsl:if>
    </xsl:attribute>
    <xsl:value-of select="@AndrewP"/>
   </td>
   <td class="ms-vb">
    <xsl:attribute name="style">
     <xsl:if test="normalize-space(@Damien) = 'NA'">background-color: #000000;</xsl:if>
    </xsl:attribute>
    <xsl:value-of select="@Damien"/>
   </td>
   <td class="ms-vb">
    <xsl:attribute name="style">
     <xsl:if test="normalize-space(@AndrewC) = 'NA'">background-color: #000000;</xsl:if>
    </xsl:attribute>
    <xsl:value-of select="@AndrewC"/>
   </td>
   <td class="ms-vb">
    <xsl:attribute name="style">
     <xsl:if test="normalize-space(@Tiffany) = 'NA'">background-color: #000000;</xsl:if>
    </xsl:attribute>
    <xsl:value-of select="@Tiffany"/>
   </td>
   <td class="ms-vb">
    <xsl:attribute name="style">
     <xsl:if test="normalize-space(@David) = 'NA'">background-color: #000000;</xsl:if>
    </xsl:attribute>
    <xsl:value-of select="@David"/>
   </td>
   <td class="ms-vb">
    <xsl:attribute name="style">
     <xsl:if test="normalize-space(@Tony) = 'NA'">background-color: #000000;</xsl:if>
    </xsl:attribute>
    <xsl:value-of select="@Tony"/>
   </td>
   <td class="ms-vb">
    <xsl:attribute name="style">
     <xsl:if test="normalize-space(@Saj) = 'NA'">background-color: #000000;</xsl:if>
    </xsl:attribute>
    <xsl:value-of select="@Saj"/>
   </td>
   <td class="ms-vb">
    <xsl:attribute name="style">
     <xsl:if test="normalize-space(@Miguel) = 'NA'">background-color: #000000;</xsl:if>
    </xsl:attribute>
    <xsl:value-of select="@Miguel"/>
   </td>
   <td class="ms-vb">
    <xsl:attribute name="style">
     <xsl:if test="normalize-space(@Viv) = 'NA'">background-color: #000000;</xsl:if>
    </xsl:attribute>
    <xsl:value-of select="@Viv"/>
   </td>
   <td class="ms-vb">
    <xsl:attribute name="style">
     <xsl:if test="normalize-space(@Paula) = 'NA'">background-color: #000000;</xsl:if>
    </xsl:attribute>
    <xsl:value-of select="@Paula"/>
   </td>
   <td class="ms-vb">
    <xsl:attribute name="style">
     <xsl:if test="normalize-space(@Helen) = 'NA'">background-color: #000000;</xsl:if>
    </xsl:attribute>
    <xsl:value-of select="@Helen"/>
   </td>
   <td class="ms-vb">
    <xsl:attribute name="style">
     <xsl:if test="normalize-space(@Matthew) = 'NA'">background-color: #000000;</xsl:if>
    </xsl:attribute>
    <xsl:value-of select="@Matthew"/>
   </td>
   <td>
   <xsl:value-of select="$CountYesForAll"/>
   </td>
   <td>
    <xsl:if test="normalize-space(@Title) = 'Richard'">
     <xsl:value-of select="$CountYesForAll + $RichardsCount"/>
    </xsl:if>
    <xsl:if test="normalize-space(@Title) = 'Andrew P'">
     <xsl:value-of select="$CountYesForAll + $AndrewPsCount"/>
    </xsl:if>
    <xsl:if test="normalize-space(@Title) = 'Damien'">
     <xsl:value-of select="$CountYesForAll + $DamiensCount"/>
    </xsl:if>
    <xsl:if test="normalize-space(@Title) = 'Andrew C'">
     <xsl:value-of select="$CountYesForAll + $AndrewCsCount"/>
    </xsl:if>
    <xsl:if test="normalize-space(@Title) = 'Tiffany'">
     <xsl:value-of select="$CountYesForAll + $TiffanysCount"/>
    </xsl:if>
    <xsl:if test="normalize-space(@Title) = 'David'">
     <xsl:value-of select="$CountYesForAll + $DavidsCount"/>
    </xsl:if>
    <xsl:if test="normalize-space(@Title) = 'Tony'">
     <xsl:value-of select="$CountYesForAll + $TonysCount"/>
    </xsl:if>
    <xsl:if test="normalize-space(@Title) = 'Saj'">
     <xsl:value-of select="$CountYesForAll + $SajsCount"/>
    </xsl:if>
    <xsl:if test="normalize-space(@Title) = 'Miguel'">
     <xsl:value-of select="$CountYesForAll + $MiguelsCount"/>
    </xsl:if>
    <xsl:if test="normalize-space(@Title) = 'Viv'">
     <xsl:value-of select="$CountYesForAll + $VivsCount"/>
    </xsl:if>
    <xsl:if test="normalize-space(@Title) = 'Paula'">
     <xsl:value-of select="$CountYesForAll + $PaulasCount"/>
    </xsl:if>
    <xsl:if test="normalize-space(@Title) = 'Helen'">
     <xsl:value-of select="$CountYesForAll + $HelensCount"/>
    </xsl:if>
    <xsl:if test="normalize-space(@Title) = 'Matthew'">
     <xsl:value-of select="$CountYesForAll + $MatthewsCount"/>
    </xsl:if>
   </td>
  </tr>
</xsl:template>
Footer template to show sub total :
<xsl:template name="dvt_1.footer">
  <xsl:param name="Rows" />
  <div class="bupareport">
    <table border="0" width="100%" cellpadding="2" cellspacing="0">
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    <td width="6%"> <xsl:value-of select="count($Rows[(@AndrewP)='Yes'])" /></td>
    <td width="6%"> <xsl:value-of select="count($Rows[(@Damien)='Yes'])" /></td>
    <td width="6%"> <xsl:value-of select="count($Rows[(@AndrewC)='Yes'])" /></td>
    <td width="6%"> <xsl:value-of select="count($Rows[(@Tiffany)='Yes'])" /></td>
    <td width="6%"> <xsl:value-of select="count($Rows[(@David)='Yes'])" /></td>
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    <td width="6%"> <xsl:value-of select="count($Rows[(@Saj)='Yes'])" /></td>
    <td width="6%"> <xsl:value-of select="count($Rows[(@Miguel)='Yes'])" /></td>
    <td width="6%"> <xsl:value-of select="count($Rows[(@Viv)='Yes'])" /></td>
    <td width="6%"> <xsl:value-of select="count($Rows[(@Paula)='Yes'])" /></td>
    <td width="6%"> <xsl:value-of select="count($Rows[(@Helen)='Yes'])" /></td>
    <td width="6%"> <xsl:value-of select="count($Rows[(@Matthew)='Yes'])" /></td>
    <td width="6%"> </td>
    <td width="8%"> <xsl:value-of select="@AndrewP"> </xsl:value-of></td>
   </tr>
  </table>
  </div>
</xsl:template>

Can we create JTable with multiple rows with varying number of columns ?

Hi All,
I came across a very typical problem related to JTable. My requirement is that cells should be added dynamically to the JTable. I create a JTable with initial size of 1,7 (row, columns) size. Once the 7 columns are filled with data, a new row should be created. But the requirement is, the new row i.e. second row should have only one cell in it initially. The number of cells should increase dynamically as the data is entered. The table is automatically taking the size of its previous row when new row is added. I tried by using setColumnCount() to change the number of columns to '1' for the second row but the same is getting applied to the first row also.
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Thanks in Advance.

Well a JTable is always going to paint the same number of columns for each row. Anything is possible if you want to rewrite the JTable UI to do this, but I wouldn't recommend it. (I certainly don't know how to do it).
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Number of columns of the rows in a ResultSet?

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