How to write a Query a table and the return result is the column name
Hi All
Pls advise how to write a query whereas the return result is the
column name.
I know there is describe <table_name>;
Is there any other ways?
Pls advise
Tj
Edited by: user600866 on Oct 14, 2008 12:13 AM
Data Dictionary table user_tab_columns has all the column names. You can query that and get what ever you want.
To get the column list of a table just query
select *
from user_tab_columns
where table_name = <your_table>Edited by: Karthick_Arp on Oct 14, 2008 12:18 AM
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The below JavaScript code is used to add row in the table when I want to add multiple row data into table for single entry no field.
<html> function addRow()
i++;
var newRow = document.all("tblGrid").insertRow();
var oCell = newRow.insertCell();
oCell.innerHTML = "<input name='srno"+i+"' type='text' id='srno"+i+"' size=10>";
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oCell.innerHTML = "<input name='itmcd"+i+"' type='text' id='itmcd"+i+"' size='10'>";
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oCell.innerHTML = "<input name='itmnm"+i+"' type='text' id='itmnm"+i+"' size='15'>";
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oCell.innerHTML = "<input name='indentqty"+i+"' type='text' id='indentqty"+i+"' size='10'>";
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oCell.innerHTML = "<input name='uom"+i+"' type='text' id='uom"+i+"' size='10'><input type='hidden' name='mcode"+i+"'id='mcode"+i+"'>";
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oCell.innerHTML = "<input name='packqty"+i+"' type='text' id='packqty"+i+"' size='10'>";
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oCell.innerHTML = "<input name='packuom"+i+"' type='text' id='packuom"+i+"' size='10'><input type='hidden' name='pack"+i+"' id='pack"+i+"'>";
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oCell.innerHTML = "<input type='button' value='Delete' onclick='removeRow(this);' />";
// oCell = newRow.insertCell();
// oCell.innerHTML = "<input type='button' value='Clear' onclick='clearRow(this);' />";
}<html> Then this data are send to the next Servlet for adding into two table.
My header portion data are added into one table which added only one row in table. while footer section data are added into the no of rows in another table dependent on No. of
Rows added into jsp page.
Here is an code for that logic.
<html>
ArrayList<String> mucode = new ArrayList<String>();
ArrayList<Integer> serials = new ArrayList<Integer>();
ArrayList<Integer> apxrate = new ArrayList<Integer>();
ArrayList<Integer> srname = new ArrayList<Integer>();
ArrayList<String> itcode = new ArrayList<String>();
ArrayList<String> itname = new ArrayList<String>();
ArrayList<Integer> iqnty = new ArrayList<Integer>();
ArrayList<String> iuom = new ArrayList<String>();
ArrayList<Integer> pqnty = new ArrayList<Integer>();
ArrayList<String> puom1 = new ArrayList<String>();
ArrayList<Integer> arate = new ArrayList<Integer>();
ArrayList<String> rdate = new ArrayList<String>();
ArrayList<String> bcs = new ArrayList<String>();
ArrayList<String> ccs = new ArrayList<String>();
ArrayList<String> remarkss = new ArrayList<String>();
//ArrayList<Integer> qtyrecs = new ArrayList<Integer>();
//ArrayList<String> dors = new ArrayList<String>();
//ArrayList<String> remarks = new ArrayList<String>();
String entryn = request.getParameter("entryno");
String rows = request.getParameter("rows");
out.println(rows);
//String Entryno = request.getParameter("entryno");
// out.println(Entryno);
int entryno = 0,reqqty = 0,srno = 0,deprequest = 0,rowcount = 0;
if(!Entryno.equals("")){
entryno = Integer.valueOf(Entryno);
if(!rows.equals("")){
rowcount = Integer.valueOf(rows);
for(int i=1;i<=rowcount;i++){
if(request.getParameter("srno"+i)!=null){
serials.add(Integer.valueOf(request.getParameter("srno"+i).trim()));
out.println(serials.size());
for(int i=1;i<=rowcount;i++){
if(request.getParameter("srno"+i)!=null){
srname.add(Integer.valueOf(request.getParameter("srno"+i).trim()));
out.println(srname.get(0));
for(int i=1;i<=rowcount;i++){
if(request.getParameter("itmcd"+i)!=null){
itcode.add(request.getParameter("itmcd"+i).trim());
} //out.println(itcode.get(i));
for(int i=1;i<=rowcount;i++){
if(request.getParameter("itmnm"+i)!=null){
itname.add(request.getParameter("itmnm"+i).trim());
}//out.println(itname.get(i));
for(int i=1;i<=rowcount;i++){
if(request.getParameter("indentqty"+i)!=null){
iqnty.add(Integer.valueOf(request.getParameter("indentqty"+i).trim()));
for(int i=1;i<=rowcount;i++){
if(request.getParameter("uom"+i)!=null){
iuom.add(request.getParameter("uom"+i).trim());
}//out.println(iuom.get(i));
for(int i=1;i<=rowcount;i++){
if(request.getParameter("mcode"+i)!=null){
mucode.add(request.getParameter("mcode"+i).trim());
for(int i=1;i<=rowcount;i++){
if(request.getParameter("packqty"+i).equals("")){
pqnty.add(0);
}else
pqnty.add(Integer.valueOf(request.getParameter("packqty"+i).trim()));
for(int i=1;i<=rowcount;i++){
if(request.getParameter("pack"+i)!=null){
puom1.add(request.getParameter("pack"+i).trim());
}else
puom1.add("");
for(int i=1;i<=rowcount;i++){
if(request.getParameter("rate"+i).equals("")){
arate.add(0);
}else
arate.add(Integer.valueOf(request.getParameter("rate"+i).trim()));
/* for(int i=1;i<=rowcount;i++){
if(request.getParameter("rate"+i)!=null){
arate.add(Integer.valueOf(request.getParameter("rate"+i).trim()));
for(int i=1;i<=rowcount;i++){
if(request.getParameter("dor"+i)!=null){
try{
rdate.add(dashdate.format(slashdate.parse(request.getParameter("dor"+i).trim())));
}catch(ParseException p){p.printStackTrace();}
}else
{ rdate.add("");}
for(int i=1;i<=rowcount;i++){
if(request.getParameter("bcc"+i)!=null){
bcs.add(request.getParameter("bcc"+i).trim());
}out.println(bcs.get(0));
for(int i=1;i<=rowcount;i++){
if(request.getParameter("ccc"+i)!=null){
ccs.add(request.getParameter("ccc"+i).trim());
}out.println(ccs.get(0));
for(int i=1;i<=rowcount;i++){
out.println("remark2");
if(request.getParameter("remark2"+i)!=null){
remarkss.add(request.getParameter("remark2"+i).trim());
}out.println(remarkss.get(0));
ArrayList<String> Idate = new ArrayList<String>();
for(int i=1;i<=rowcount;i++){
if(request.getParameter("dateindent"+i)!=null){
try{
Idate.add(dashdate.format(dashdate.parse(request.getParameter("dateindent"+i).trim())));
}catch(ParseException p){p.printStackTrace();}
String Rdate = dashdate.format(new java.util.Date());
String tdate = dashdate.format(new java.util.Date());
// String Indentdate = dashdate.format(new java.util.Date());
// String ApprovedT1 = dashdate.format(new java.util.Date());
// String ApprovedT2 = dashdate.format(new java.util.Date());
// String ApprovedT1=" ";
//String ApprovedT2="";*/
String ApprovedT1= dashdate.format(new java.util.Date());
out.println (ApprovedT1);
String ApprovedT2=dashdate.format(new java.util.Date());
out.println(ApprovedT2);
String Indentdate=(dashdate.format(slashdate.parse(request.getParameter("dateindent").trim())));
out.println(Indentdate);
String Cocode ="BML001";
out.println(Cocode);
String Deptcode = request.getParameter("dept1");
out.println(Deptcode);
String Empcode = request.getParameter("emp");
out.println(Empcode);
String Refno =request.getParameter("rtype");
out.println(Refno);
String Divcode = request.getParameter("todiv1");
out.println(Divcode);
String Usercode = "CIRIUS";
String Whcode = request.getParameter("stor");
out.println(Whcode);
// String Itemgroupcode = request.getParameter("");
String Itemgroupcode ="120000";
out.println(Itemgroupcode);
String Supplytypecode = request.getParameter("stype");
out.println(Supplytypecode);
String Delcode = request.getParameter("deliverycode");
out.println(Delcode);
String Itemclass="WS";
out.println(Itemclass);
// String Itemclass = request.getParameter("iclass");
// out.println(Itemclass);
String unitcode = request.getParameter("uni");
out.println(unitcode);
String Todivcode = request.getParameter("todiv1");
out.println(Todivcode);
String Appxrate = request.getParameter("rate");
out.println(Appxrate);
String Srno = request.getParameter("srno");
out.println(Srno);
/* String Indqty = request.getParameter("indentqty");
out.println(Indqty);*/
String Itemcode = request.getParameter("itmcd");
out.println(Itemcode);
String Othersp = request.getParameter("remark1");
out.println(Othersp);
String Reqdt = request.getParameter("dor");
out.println(Reqdt);
String Munitcode = request.getParameter("mcode");
out.println(Munitcode);
String Packqty = request.getParameter("packqty");
out.println(Packqty);
String Packuom = request.getParameter("pack");
out.println(Packuom);
String Remark2 = request.getParameter("remark2");
out.println(Remark2);
String BC = request.getParameter("bcc");
out.println(BC);
String CC = request.getParameter("ccc");
out.println(CC);
try{
st=connection.createStatement();
connection.setAutoCommit(false);
String sql="INSERT INTO PTXNINDHDR(COCODE,DEPTCODE,EMPCODE,APPROVEDT1,APPROVEDT2,INDDT,ENTRYNO,REFNO,REMARKS,DIVCODE,USERCODE,WHCODE,ITEMGROUPCODE,SUPTYPECODE,DELCODE,UNITCODE,TODIVCODE,ITEMCLASS)VALUES('"+Cocode+"','"+Deptcode+"','"+Empcode+"','"+ApprovedT1+"','"+ApprovedT2+"','"+Indentdate+"',"+Entryno+",'"+Refno+"','"+Othersp+"','"+Divcode+"','"+Usercode+"','"+Whcode+"','"+Itemgroupcode+"','"+Supplytypecode+"','"+Delcode+"','"+unitcode+"','"+Todivcode+"','"+Itemclass+"')";
out.println(sql);
st.addBatch(sql);
for(int i=0;i<serials.size();i++){
out.println("Inside the Statement");
String query3="test query for u";
out.println(query3);
String queryx="Insert into PTXNINDDTL(APXRATE,ENTRYNO,BRKNO,INDQTY,ITEMCODE,OTHERSPFCS,MUNITCODE,PACKQTY,PACKUOM,REMARKS,DIMSUBGRPCODE,DIMCODE,REQDT)VALUES("+arate.get(i)+","+entryno+","+srname.get(i)+","+iqnty.get(i)+","+itcode.get(i)+",'"+Othersp+"','"+mucode.get(i)+"',"+pqnty.get(i)+",'"+puom1.get(i)+"','"+remarkss.get(i)+"','"+bcs.get(i)+"','"+ccs.get(i)+"','"+rdate.get(i)+"')";
out.println(queryx);
st.addBatch(queryx);
int[] result=st.executeBatch();
connection.commit();
for(int k=0;k<result.length;k++)
out.println("rows updated by "+(k+1)+"insert sta:"+result[k]+"");
catch(BatchUpdateException bue)
out.println("error1;"+bue+"");
catch(SQLException sql)
out.println("error2;"+sql+"");
catch(Exception l)
out.println("error3;"+l+"");
</html>
Now I looking for to retrieve this footer section data available in multiple rows from footer table and present it in jsp page .
I am finding difficulties in how to show this multiple row data for dynamic no of rows .i.e. variable no. of rows.
I have able to show the data in Header portions of page in this ways
here i am adding the part of code which shows the data from header part of table i.e from Header table
<html>
<h2 align="center"><b>Indent Preparation</b></h2>
<div align="left">
<table width="849" border="0" cellspacing="3" cellpadding="3" align="center">
<tr>
<td ><div align="left"><b>Indent No.</b></div></td>
<td ><label>
<input name="indentno" type="text" id="indentno" size="15" value="" /><input type="hidden" name="no" id="no">
</label></td>
<td ><div align="center"><strong>Indent Date</strong></div></td>
<td ><label>
<div align="center">
<input name="dateindent" type="text" id="dateindent"value="<%=date1%>"/><input type="hidden" name="no" id="no">
</div>
</label></td>
<td> </td>
<td><div align="right"><strong>Entry No.</strong></div></td>
<%if(oper!=null && oper.equals("view") && hdrcode!=null && hdrdetails!=null){%>
<td><input type="text" value="<%=hdrcode.get(3)%>" size="10"></td>
<%}else{%>
<td><input type="text" name="entryno" id="entryno" value="<%=entryNo%>"/></td>
<%}%>
<div align="right"></div>
</tr>
<tr>
<td><b>Division</b></td>
<%if(oper!=null && oper.equals("view") && hdrcode!=null && hdrdetails!=null){%>
<td><input type="text" value="<%=hdrdetails.get(9)%>" size="20"</td>
<td><input type="hidden" name="div1" id="div1" value='<%=hdrcode.get(10)%>'></td>
<%}else{%>
<td><input type="text" name="div" id="div" /></td>
<td><input type="hidden" name="div1" id="div1" /> </td>
<%}%>
<td> </td>
<td> </td>
<td><div align="right"><strong>Unit</strong></div></td>
<%if(oper!=null && oper.equals("view") && hdrcode!=null && hdrdetails!=null){%>
<td><input type="text" value="<%=hdrdetails.get(14)%>" size="20"</td>
<td><input type="hidden" name="uni" id="uni" value='<%=hdrcode.get(12)%>'></td>
<%}else{%>
<td><input type="text" name="unit" id="unit" /></td>
<td><input type="hidden" name="uni" id="uni" /> </td>
<%}%>
</tr>
<tr>
</html>
Any suggestion on any above works is highly appreciated.
Thanks and regards
harshalToo much code. It's also not well intented nor formatted. I don't see a question either or it got lost in that heap of unformatted code.
I will only answer the question in the thread's subject:
How to retrieve multiple data from table and represent it in jsp pageTo retrieve, make use of HttpServletRequest#getParameterValues() and/or #getParameter().
To display, make use of JSTL's c:forEach. -
how to write this query ?
list the emp name who is working for the highest avg sal department.
I can use row_number over to get correct result. If we don't use this row_number function, just plain sql, how to do it ?
the row_number version is like this
select emp.* from emp ,
select deptno, row_number() over (order by avg(sal) desc) r from emp
group by deptno
)e
where e.r = 1
and emp.deptno = e.deptnoHi,
806540 wrote:
how to write this query ?
list the emp name who is working for the highest avg sal department.
I can use row_number over to get correct result. If we don't use this row_number function, just plain sql, how to do it ?ROW_NUMBER is just plain SQL, and has been since Oracle 8.1.
ROW_NUMBER (or its close relative, RANK) is the simplest and most efficient way to solve this problem. Why not do this the right way?
the row_number version is like this
select emp.* from emp ,
select deptno, row_number() over (order by avg(sal) desc) r from emp
group by deptno
)e
where e.r = 1
and emp.deptno = e.deptno
If there happens to be a tie (that is, two or more departments have the same average sal, and it is the highest), then the query above will only arbitrarily treat one of them (no telling which one) as the highest. Change ROW_NUMBER to RANK to get all departments with a claim to having the highest average sal.
You could use the ROWNUM pseudo-column instead of ROW_NUMBER, if all you want to do is avoid ROW_NUMBER.
Without using ROW_NUMBER or RANK, there are lots of ways involving other analytic functions, such as AVG and MAX.
If you really, really don't want to use analytic functions at all, you can do this:
SELECT *
FROM scott.emp
WHERE deptno IN (
SELECT deptno
FROM scott.emp
GROUP BY deptno
HAVING AVG (sal) = (
SELECT MAX (AVG (sal))
FROM scott.emp
GROUP BY deptno
; -
How to synchronize between DHCP binding table and DHCP snooping table ?
I clear DHCP snooping table with command "clear ip dhcp snooping binding " , and PC can't communicate with other any more. So how to synchronize between DHCP binding table and DHCP snooping table ?
dhcp-test#sh ip dhcp bind
IP address Client-ID/ Lease expiration Type
Hardware address
99.1.65.32 0100.1125.353c.25 Mar 02 1993 01:05 AM Automatic
99.1.65.33 0100.1438.059f.85 Mar 02 1993 12:01 AM Automatic
dhcp-test#sh ip dhcp snooping binding
MacAddress IpAddress Lease(sec) Type VLAN Interface
Total number of bindings: 0
thanks!ip dhcp snooping binding mac-address vlan vlan-id ip-address interface interface-id expiry seconds
Add binding entries to the DHCP snooping binding database. The vlan-id range is from 1 to 4904. The seconds range is from 1 to 4294967295.
Enter the above command for each entry that you add
To delete the database agent or binding file, use the no ip dhcp snooping database interface configuration command. To reset the timeout or delay values, use the ip dhcp snooping database timeout seconds or the ip dhcp snooping database write-delay seconds global configuration command.To renew the database, use the renew ip dhcp snooping database privileged EXEC command. -
How to retrieve data from catsdb table and convert into xml using BAPI
How to retrieve data from catsdb table and convert into xml using BAPI
Points will be rewarded,
Thank you,
Regards,
Jagrut BharatKumar ShuklaHi,
This is not your requirment but u can try this :
CREATE OR REPLACE DIRECTORY text_file AS 'D:\TEXT_FILE\';
GRANT READ ON DIRECTORY text_file TO fah;
GRANT WRITE ON DIRECTORY text_file TO fah;
DROP TABLE load_a;
CREATE TABLE load_a
(a1 varchar2(20),
a2 varchar2(200))
ORGANIZATION EXTERNAL
(TYPE ORACLE_LOADER
DEFAULT DIRECTORY text_file
ACCESS PARAMETERS
(FIELDS TERMINATED BY ','
LOCATION ('data.txt')
select * from load_a;
CREATE TABLE A AS select * from load_a;
SELECT * FROM A
Regards
Faheem Latif -
Query a table and exit when first record found
I want to query a table and just want to know if any rows matching my query criteria exist in the table. I just want to find one row, irrespective of order and stop the query right there. How do I do that?
The most efficient way would be either to use rownum = 1 as part of the condition in your second query, but, as written, both will return multiple rows. Your first will need to have an additional predicate and rownum = 1 in addition to the exists.
Assuming that the predicate can use an index, then the most efficient approach would be either:
SELECT 1 FROM table
WHERE <conditions> and
rownum = 1or possibly:
SELECT 1 FROM dual
WHERE EXISTS (SELECT 1 FROM table
WHERE <conditions>)Both will do a range scan on the applicable index, stopping when the find the first matching entry. To my mind, the first is clearer in intent.
To illustrate the error in your first query, consider:
SQL> SELECT * FROM t;
ID DESCR
1 One
2 Two
3 Three
4 Four
5 Five
1 One
2 Two
3 Three
4 Four
5 Five
SQL> SELECT * FROM t
2 WHERE id = 1 and
3 rownum = 1;
ID DESCR
1 One
SQL> SELECT * FROM t
2 WHERE EXISTS (SELECT 1 FROM t
3 WHERE id = 1);
ID DESCR
1 One
2 Two
3 Three
4 Four
5 Five
1 One
2 Two
3 Three
4 Four
5 FiveJohn
Edited by: John Spencer on Oct 2, 2009 12:06 PM
Added queries from t -
How will write SQL query to fetch data from each Sub-partition..
Hi All,
Anyone does have any idea about How to write SQL query to fetch data from Sub-partition.
Actually i have one table having composite paritition(Range+list)
Now if i want to fetch data from main partition(Range) the query will be
SELECT * FROM emp PARTITION(q1_2005);
Now i want to fetch data at sub-partition level(List) .But i am not able to get any SQL query for that.
Pls help me to sort out.
Thanks in Advance.
AnwarSELECT * FROM emp SUBPARTITION(sp1);
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