Solved

Columns’ names of a table using JAVA

Posted on 2006-07-23
12
224 Views
Last Modified: 2006-11-18
As usual, there are some of SQL queries cannot be executed in JAVA and can be replaced by another query to do the job, and I want the columns’ names of a table as a result from:

desc tableName ;

which cannot be executed in JAVA.

So, how I get the columns’ names of a table?
0
Comment
Question by:javamate06
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
12 Comments
 
LVL 26

Expert Comment

by:ksivananth
ID: 17165789
Not sure but, try if TableMetaData isthr
0
 
LVL 86

Accepted Solution

by:
CEHJ earned 30 total points
ID: 17165796
>>So, how I get the columns’ names of a table?

Use

resultSet.getDatabaseMetaData();
0
 

Author Comment

by:javamate06
ID: 17165822
I tried:

ResultSet rs = stmt.executQuery(“desc tableName”);
ResultSetMetaData rsmd = rs.getMetaData();
int n = rsmd.getColumnCount();

for(int a = 0 ; a < n  ; a++)
{
  System.out.println(rsmd.getColumnName(a));
}

The problem with query itself not executable in JAVA.
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 86

Expert Comment

by:CEHJ
ID: 17165833
Sorry - i'm glad you corrected my answer ;-)

>>The problem with query itself not executable in JAVA.

Why would it not be?
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 17165840
As i think i mentioned before

>>ResultSet rs = stmt.executQuery(“desc tableName”);

should be


ResultSet rs = stmt.executeQuery(“describe tableName”);
0
 

Author Comment

by:javamate06
ID: 17165866
Give me the same error

ORA-00900 : invalid SQL statement

Did you execute it?
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 17165872
I don't have Oracle i'm afraid. You could execute a select on system tables
0
 

Author Comment

by:javamate06
ID: 17165906
Thank you...

the query is correct and it can be executed in SQL worksheet it is only in java cannot.
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 17165915
Try executing a select on system tables
0
 
LVL 23

Expert Comment

by:Ajay-Singh
ID: 17165916
Try using DatabaseMetaData (http://java.sun.com/j2se/1.5.0/docs/api/java/sql/DatabaseMetaData.html#getColumns(java.lang.String, java.lang.String, java.lang.String, java.lang.String))



DatabaseMetaData metaData = connection.getMetaData();
ResultSet columns = getColumns(null, null, tableName, null);
0
 

Author Comment

by:javamate06
ID: 17165943
I did it...


ResultSet rs = stmt.executQuery("select * from tableName");
ResultSetMetaData rsmd = rs.getMetaData();
int n = rsmd.getColumnCount();

for(int a = 0 ; a < n  ; a++)
{
  System.out.println(rsmd.getColumnName(a));
}
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 17165948
Glad you got it working
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
V.simple question about Android packages and libraries 1 38
collection output issue 9 66
passing enum to a method 4 35
American Express @Work site and Java 4 68
Java had always been an easily readable and understandable language.  Some relatively recent changes in the language seem to be changing this pretty fast, and anyone that had not seen any Java code for the last 5 years will possibly have issues unde…
Are you developing a Java application and want to create Excel Spreadsheets? You have come to the right place, this article will describe how you can create Excel Spreadsheets from a Java Application. For the purposes of this article, I will be u…
Video by: Michael
Viewers learn about how to reduce the potential repetitiveness of coding in main by developing methods to perform specific tasks for their program. Additionally, objects are introduced for the purpose of learning how to call methods in Java. Define …
Viewers will learn about if statements in Java and their use The if statement: The condition required to create an if statement: Variations of if statements: An example using if statements:

726 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question