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).

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Reading MS Project column names and data on the fly from a selected View

Hi guys,
I have several views on my project file (MSPROJECT 2010) and I want to build a macro so that;
1. User can select any view ( Views can have diffrent columns and the user may add new columns as well)
2. User runs the Macro and all the coulmns along with the tasks displayed in the view will be written to a excel file. ( I don't want to build several macro's for each view, I'm thinking of a common method which would work for any selected view)
The problem I'm facing is that how will i read the column names and data for a particular view on the fly without hard coding them inside the vba code ?
The solution needs to work on a master schedule as well.
Appreciate your feedback.

Just to get you started the following code writes the field name and data for the active task to the Immediate window.
Sub CopyData()
Dim fld As TableField
For Each fld In ActiveProject.TaskTables(ActiveProject.CurrentTable).TableFields
If fld.Field >= 0 Then
Debug.Print Application.FieldConstantToFieldName(fld.Field), ActiveCell.Task.GetField(fld.Field)
End If
Next fld
End Sub
Rod Gill
Author of the one and only Project VBA Book
www.project-systems.co.nz

Generating CSV file with column names and data from the MySQL with JAVA

Hi all,
Give small example on ...
How can I add column names and data to a CSV from from MySQL.
like
example
sequence_no, time_date, col_name, col_name
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234, 27-apr-2004, data, data
Pls give small exeample on this.
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Hello Rama Krishna,
Check this code:
Example below exports data from MySQL Select query to CSV file.
testtable structure
CREATE TABLE testtable
(id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
text varchar(45) NOT NULL,
price integer not null);
Application takes path of output file as an argument.
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class automateExport {
    public static void main(String[] args) {
        DBase db = new DBase();
        Connection conn = db.connect(
                "jdbc:mysql://localhost:3306/test","root","caspian");
        if (args.length != 1) {
            System.out.println(
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            return;
        db.exportData(conn,args[0]);
class DBase {
    public DBase() {
    public Connection connect(String db_connect_str,
            String db_userid, String db_password) {
        Connection conn;
        try {
            Class.forName("com.mysql.jdbc.Driver").newInstance();
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        } catch(Exception e) {
            e.printStackTrace();
            conn = null;
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    public void exportData(Connection conn,String filename) {
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HI All,
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Thanks in Advance.
Regards,
Haritha.

Hello Haritha,
Please see the SAP help:
http://help.sap.com/saphelp_nw70/helpdata/en/46/9bd97240b81e5be10000000a1553f6/frameset.htm
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Go to manage of the Text or attirbute of the master data object, see what are being loaded daily from there and delete the remaining.
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I had created a two window i.e For Amount and Date. If I process the cheque the Amount value and Date should not trigger for VOID CHEQUES.
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Regards
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Hi,
I dont know which tablel you are referring to, is it PAYR table and the field VOIDR?
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Hi Vishal,
Its seems a simple a work out.
1.Go to RSO2 & choose the relevant option ie. whether you want to create Transactional DS, Master Data DS or Text DS.
2. Name it accordingly & then create.
3. Give description to it & then give table name FAGLFLEXA.
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If you still face some problem then do mail me at [email protected]
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Hi Phani,
To know the print program and output type for a standard script we have a table called TNAPR. So just you go to SE11 and provide the table name as TNAPR and choose display option.Then go with display entries option and in selection screen you have to provide the form name for whic you want to know the print program and output type.
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How to know a table's column name and its types

if there has one table called "myEmp" stored in my database, it uses to hold employees' information. when a newcomer is hired, the HR will use a register page to register his/her information. for the flexible purpose, i couldn't know how many columns in this table, since it may be added two columns or deleted one column in one day, all i should do is show all fields in the register page and get all data to insert into this table.
so, how can i know one table's structure in java? i know there has a method in DatabaseMetadata class: getTables(catalog, schema, tablename, tabletype), it's return is resultset . i wrote a code below:
DatabaseMetaData md = conn.getMetaData();
ResultSet md.getTables(null, null, tablename, types);
i set catalog and schema both are null since i don't know what else can i set?
the ResultSet doesn't contain the information i want.
is there anyone can tell me where i am wrong and the right method? thanx a lot!
sincerely
Jasmine

use ResultSetMetaData to get Column names

Trying to list table column names with data type

I have a list of table names and need to output the fields and their type. So I tried the code below but getName() returns string even when I know the field is an int. So I'm assuming I'm using the wrong function. I looked at the output from getMethods() but I didn't see anything else that would return the information I want. TIA.
<cfset TableList = "accountingsettings,address,area,areasettings">
<cfloop from="1" to="#Listlen(TableList)#" index="i">
<cfquery datasource="axxerion" name="getTablename">
select * from #Listgetat(TableList, i)#
where 0<>0
</cfquery>
<cfset colHeaderNames = ArrayToList(getTablename.getColumnList())/>
<cfoutput>
<p><b>#Listgetat(TableList, i)# #getTablename.getMetaData().getColumnCount()#</b></p>
<ul>
<cfloop from="1" to="#Listlen(colHeaderNames)#" index="x">
<cfdump var="#getMetaData(Listgetat(colHeaderNames,x)).getmethods()#">
<li>#Listgetat(colHeaderNames,x)# #getMetaData(Listgetat(colHeaderNames,x)).getName()# </li>
</cfloop>
</ul>
</cfoutput>
</cfloop>
Returns
accountingsettings 22
ID java.lang.String
BINENTRYID java.lang.String
CLIENTID java.lang.String
CREATESYSTEMUSERID java.lang.String
CREATETIME java.lang.String
DEPRECIATIONYEARS java.lang.String
POSTNOTAPPROVED java.lang.String
REGIONID java.lang.String
RESIDUALVALUE java.lang.String
REVISION java.lang.String
UPDATESYSTEMUSERID java.lang.String
UPDATETIME java.lang.String
DUPLICATEREFERENCES java.lang.String
STRICTMODE java.lang.String
CONSOLIDATEINVOICEITEMS java.lang.String
AUTOACCOUNTINGPERIOD java.lang.String
INVOICEDESCRIPTION java.lang.String
POSTREQUIRED java.lang.String
CONSOLIDATEOUTINVOICEITEMS java.lang.String
PAYMENTDIFFERENCECATALOGITEMID java.lang.String
ACCOUNTINGPERIODLENGTHCODE java.lang.String
CREDITPAYMENTS java.lang.String

So I'm assuming I'm using the wrong function.
You are using GetMetaData() incorrectly. It returns an array of structures. Cfloop through the returned array, and output the #name# and #typeName# keys.
But .. if you only need the column metadata. Dan's suggestion of using cfdbinfo would seem more appropriate here.

How to capture user name and date in the database

How to capture the person name who edits the application and the date of edit in the database...
Pallavi

Hi
There are substitution strings you can use for this purpose.
1.APP_USER ------is the current user running the application
2.SYSDATE --------represents the current date on the database server
APP_USER Syntax
Bind variable------ :APP_USER
PL/SQL------- V('APP_USER')
Substitution string---------- &APP_USER.
SYSDATE_YYYYMMDD Syntax
Bind variable------- :SYSDATE_YYYYMMDD
Direct PL/SQL------- APEX_APPLICATION.G_SYSDATE (DATE DATATYPE)
PL/SQL-------- V('SYSDATE_YYYYMMDD')
Your application will be based on a table with primary key column. You create a 'before update trigger' on that table and add columns 'UPDATED_ON' and 'UPDATED_BY' to that table. Add the following to that trigger:
:NEW.UPDATED_ON := SYSDATE;
SELECT V('APP_USER') INTO :NEW.UPDATED_BY FROM DUAL;
-Priyanka

BUG: Export DDL and Data fails for mixed case table/column names

Hi there,
I have found a bug in SQL Developer. See details below.
Description:
When "Export DDL and Data) function is used on a table/columns not named in UPPERCASE, sql generated by SQL Developer is invalid.
Steps to reproduce:
- open SQL Developer, connect to DB
- make a table named "lowerCase" (in double quotes, so it won't be automatically changed to capital letters)
- you may also add some columns, for example "lowerCol1", "UpCol2", ALLUPCOL3
- add some data rows to the table
- choose Tools -> Export DDL and Data
- check exporting of tables and data, on "filter" tabs choose your "lowerCase" table
- press "Apply"
Error:
Generated SQL contains invalid INSERTs: mixed-case table and columns are referenced without obligatory double quotes, which yields an error when generated script is executed (see below, relevant line is underlined)
-- DDL for Table lowerCase
CREATE TABLE "DBO_HT"."lowerCase"
(     "lowerCol1" VARCHAR2(100),
     "UpCol2" VARCHAR2(100),
     "ALLUPCOL3" VARCHAR2(100)
-- DATA FOR TABLE lowerCase
-- FILTER = none used
-- INSERTING into lowerCase
Insert into lowerCase (lowerCol1,UpCol2,ALLUPCOL3) values ('lc','uc','auc');
-- END DATA FOR TABLE lowerCase
Remarks
SQL Developer: version 1.2.1, build MAIN-32.13
Oracle DBs: 9.2 & Express
OS: Windows 2000 Professional
If you need any more details/testing, let me know. I'd really appreciate a quick patch for this issue...
Alternatively, do you know of any other simple way of copying a single database (it's called a schema in Oracle, right?) from one computer to another? Possibly something so simple like detaching->copying->reattaching mdf (data) files in SQL Server... I thought that this "Export DDL&Data" function will do, but as you can see I couldn't use it.
I just need a simple solution that works - one operation on source to stuff, get the resulting files to other computer and one operation to have it running there... I think that such scenario is very basic, yet I just can't achieve it and I am simply not allowed to spend more time on it (read: our test project fails, my company rejects my "lobbying" and stays with MSSQL :/ )
Thanks a lot & bye

Thanks for your reply.
ad. 1)
You're right. I just wanted to give some very short feedback on my experiences with SQL Developer, so I didn't think starting new threads would be necessary, but as I was writing it became much bigger than I initially planned - sorry about that. I will make proper threads as soon as possible. Having "Edit post" button on this forum would also be useful.
ad. 2)
Generally, you're right - in most cases it's true that "switching DBMS is a major commitment" and "you will produce terrible code" if you don't learn the new one.
However, I think that you miss one part of market here - the market that I think Express is also targeted on. I'd call it a "fire&forget databases" market; MySQL comes to mind as possibly most common solution here. It's the rather small systems, possibly web-accessed, whose data-throughput requirements are rather modest; the point is to store data at all, and not necesarily in fastest way, because given the amount of data that is used, even on low-end hardware it will work well enough. What's important here is its general ease of use - how easy is to set up such system, connect and access data, develop a software using it, how much maintenance is needed, how easy this maintenance is, how easy are the most common development tasks as creating a DB, moving a DB from test to production server etc. There, "how easy" directly translates to "how much time we need to set it up", which translates to "how much will the development will cost".
Considering the current technology, switching the DBMS in such systems is not necesarily a major commitment and believe me that you will not produce terrible code. In many cases it's as simple as changing a switch in your ORM toolkit: hibernate.dialect = Hibernate.Dialect.OracleDialect vs MySQLDialect vs MsSql2005Dialect
Therefore, in some part of market it's easy to switch DBMS, even on project-by-project basis. The reason to switch will appear when other DBMS makes life easier => development faster. From that point of view, I can understand my colleagues giving me an embarassing look and saying "come on, I won't read all these docs just to have db copied to test server". And it doesn't mean "they are not willing to learn anything new", it's just that they feel such basic task should have self-explaining solution that doesn't require mastering any special knowledge. And if they get such simple solutions somewhere else, it costs them nothing to change the hibernate dialect.
I think Oracle did the great job with introducing the Express to this "fire&forget" market. The installation is a snap, it just works out of the box, nothing serious to configure, opposite to what I remember from installing and working on Oracle 9 a few years ago. In some places it's still "you need to start SQL*Plus and enter this script", but it's definitely less than before. I also find the SQL Developer a great tool, it can do most of what we need to do with the DB, it's also much better and pleasant to use over Oracle 9 tools. Still, a few basic things still require too much hassle, and I'd say taking your schema to another machine is one of them. So I think that, if you do it well, the "schema copy wizard" you mentioned might be very helpful. If I was to give any general advice for Express line of DB/tools, I'd say "make things simple" - make it "a DB you can't see".
That's, IMHO, the way to attract more Express users.

Loading File name and file contents into two separate tables using Sqlloadr

Hi All,
I have situtation like to load File contents into One table and File name into one table . File comes with .txt extension
Example :
File name : product_09_abc.txt
File contents :
Productcode
ABC
CDE
EFT
Can you please help me out this how can we acheive this using SQLLOADER.

SQL*Loader will not pass through the filename for you to be able to insert into a table.
You will need to have a controlling o/s script that picks up the file name, calls sql*loader and then also call's an SQL script (using sql*plus?) to insert the filename into a.n.other table.

How To... Change the Data Type for a SELECT-OPTIONS at run time.

Hello,
I am trying to restrict the values available for entry into a SELECT-OPTIONS at run time depending on user input.
The logic is as follows. The user has two input fields. A PARAMETER field which has the type RSDIOBJNM and allows them to choose an InfoObject. And the user has a SELECT-OPTIONS field to allow them to select the Characteristic values for that InfoObject.
I would like the following example to be possible:
The user enters 0MATERIAL into the PARAMETER. When the user clicks on the SELECT-OPTIONS control code will derive a list of possible options the user can enter in the SELECT-OPTIONS. In this case only values found in the master data or at least no values greater than 18 characters.
I have looked at the following function module SELECT_OPTIONS_RESTRICT and this do not appear to be helpful as they only restrict on the signs allowed for the values (unless I misunderstand, it is a complex function module!).
The code I have so far is (thus the user enters a InfoObject into p_char1 and the select options so_char1 should only accept active values of that InfoObject):
declaration of variables for user interface
DATA c_char(32) TYPE c.
declaration of count variable
DATA i_count TYPE i.
declaration of user interface
SELECTION-SCREEN BEGIN OF BLOCK a1 WITH FRAME TITLE text-001.
    PARAMETERS: p_ipack TYPE RSLOGDPID.
SELECTION-SCREEN END OF BLOCK a1.
SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME TITLE text-002.
    PARAMETERS: p_char1 TYPE RSDIOBJNM.
    SELECT-OPTIONS: so_char1 for c_char NO INTERVALS.
    PARAMETERS: p_char2 TYPE RSDIOBJNM.
    SELECT-OPTIONS: so_char2 for c_char NO INTERVALS.
    PARAMETERS: p_char3 TYPE RSDIOBJNM.
    SELECT-OPTIONS: so_char3 for c_char NO INTERVALS.
SELECTION-SCREEN END OF BLOCK b1.
Is what I am trying to do possible???
Thanks for any help. Ross.

You really want to restrict possible values of a select-option based on another field, not change the length of type of the select-option field, right?
Here is what you do: Code a custom F4 value help for the select-option at event AT SELECTION-SCREEN ON VALUE REQUEST FOR.. The first thing you do here is read the value of the parameter field (p_ipack in your example). You can use function module DYNP_VALUES_READ. Based on this value, you can propose values for the select-option fields. Note that the use can still enter whatever s(he) wishes in to the select-option field without pressing F4. In this case, you will have to code some input validations taking into account the value in the p_ipack field.

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

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