How do I check if a table exists

I have some embedded SQL statements to create tables and indexes
in a database. These tables may or may not already be there. I
would like to be able to drop the table(s) first, then create
them. Unfortunately, an error is generated if I drop a table
that does not exist.
Can someone send me the proper SQL command to check if a table
exists before dropping it in Oracle?
TIA
Eric
null

Similar Messages

How to check if database/table exists in MYSQL

I am writing a program which accesses databases in MYSQL, is there any way to check if the databases exists on the MYSQL server and if not create one && to check if a table exists and create one of if it does not

OK, found out that as special permissions needed to create databases I assume it cannot be done via my app but how about Tables

How can i check if a procedure exists in a certain database version

So today i became really frustrated after noticing that the Oracle SQL version on some computer I needed to work on was 10.1. The problem with that was that I needed a procedure called "xmlserialize". I browsed the documentation for it, but I didn't see anything like "since 11.0" or something similar.
So.. how can I see what is the first Oracle SQL version that supported some procedure?
For example, when I check a class definition for Java, I consult the javadoc :
http://docs.oracle.com/javase/7/docs/api/java/math/BigInteger.html
and there there's a field called "Since". For BigInteger ( it's just an example ), it says "Since: JDK1.1", so I know that if I'm using a JDK version earlier that 1.1, I won't have that class.
Is there some similar information for Oracle procedures/ functions/ features/ etc?

>
Let me be more explicit. I've searched for xmlserialize function.
The only place on the website that holds information regarding this function is this page:
>
To paraphrase sybrand - that's utter nonsense. I have never found only one reference to anything on the web.
Your question subject is
>
how can i check if a procedure exists in a certain database version
>
And since you said you were using 10.1 I searched for
>
oracle 10.1 xmlserialize
>
And the very first link on the search results is
>
What's New In Oracle XML DB?
http://docs.oracle.com/cd/B19306_01/appdev.102/b14259/whatsnew.htm
>
That link is for the XML Db Dev Guide for 10g Release 2
Would you like to guess what you find if you search for xmlserialize?
Right on the very first page is this
>
Oracle Database 10g Release 2 (10.2) New Features in Oracle XML DB
SQL/XML Standard Compliance (SQL:2005 Standard Part 14)
Support for the developing SQL/XML standard has been extended. The following SQL functions have been added: XMLPI, XMLComment, XMLRoot, XMLSerialize, XMLCDATA, and XMLParse. Escaping of identifiers has also been updated, in accordance with a change to the SQL/XML standard. See "Generating XML Using SQL Functions".
>
Did you notice the second sentence? I removed the clutter to make it easier to see.
>
The following SQL functions have been added: . . .XMLSerialize. . .
>
Fnding information can't get any easier than that.

How to check if the table exists in teh database

Hi,
I am using MS Acess and how do i check using the query if the table already exist in the db?
What is the exact query. Can any one help me.
Thanks
Deepti

This will do it for you and print out the results using JDOM. - %
package database;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.output.XMLOutputter;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
public class TableLister
   public static final String DRIVER = "sun.jdbc.odbc.JdbcOdbcDriver";
   public static final String DATABASE = "jdbc:odbc:DRIVER={Microsoft Access Driver (*.mdb)};DBQ=C:\\Documents and Settings\\Michael\\My Documents\\Projects\\Java\\Forum\\data\\DataConnection.mdb";
   public static final String USERNAME = "admin";
   public static final String PASSWORD = "";
   public static void main(String[] args)
      Connection conn = null;
      ResultSet tables = null;
      String driver = "";
      try
         driver = ((args.length > 0) ? args[0] : DRIVER);
         String url = ((args.length > 1) ? args[1] : DATABASE);
         String username = ((args.length > 2) ? args[2] : USERNAME);
         String password = ((args.length > 3) ? args[3] : PASSWORD);
         Class.forName(driver);
         conn = DriverManager.getConnection(url, username, password);
         DatabaseMetaData meta = conn.getMetaData();
         // Bring back ALL tables and views, including SYSTEM tables.
         tables = meta.getTables(null, null, null, null);
         ResultSetMetaData rsmd = tables.getMetaData();
         int numColumns = rsmd.getColumnCount();
         List columnNames = new ArrayList();
         for (int j = 0; j < numColumns; ++j)
            columnNames.add(rsmd.getColumnName(j + 1));
         Element root = new Element("tables");
         int tableCount = 0;
         while (tables.next())
            Element table = new Element("table");
            table.setAttribute("id", Integer.toString(++tableCount));
            for (int j = 0; j < numColumns; ++j)
               Element column = new Element((String) columnNames.get(j));
               column.setText(tables.getString((String) columnNames.get(j)));
               table.addContent(column);
            root.addContent(table);
         conn.close();
         Document doc = new Document(root);
         XMLOutputter outputter = new XMLOutputter("   ", true);
         System.out.println(outputter.outputString(doc));
      catch (ClassNotFoundException e)
         System.err.println("Couldn't load JDBC driver class " + driver);
         e.printStackTrace();
      catch (SQLException e)
         System.err.println("SQL state: " + e.getSQLState());
         System.err.println("SQL error: " + e.getErrorCode());
         e.printStackTrace();
      catch (Exception e)
         e.printStackTrace();
      finally
         close(tables);
         close(conn);
   public static void close(Connection c)
      try
         if (c != null)
            c.close();
      catch (SQLException e)
         e.printStackTrace();
   public static void close(Statement stmt)
      try
         if (stmt != null)
            stmt.close();
      catch (SQLException e)
         e.printStackTrace();
   public static void close(ResultSet result)
      try
         if (result != null)
            result.close();
      catch (SQLException e)
         e.printStackTrace();
}

How to check if internal table exists in dynamical called subroutine ?

Hi,
in a dynamically called subroutine i'm using a internal table, but in some calls this table is not exist.
How can i check in the code whether the internal table exist or not ?
regards,
Hans

In Horst Keller's blog /people/horst.keller/blog/2005/05/27/abap-geek-10--everything-functions-150-but-how my issue is talked about :
All other parameters are handled in a way as they were declared as global data objects in the top include of the function group, that can be used only during the execution of the function module: They are visible throughout the function group but you can access them only while the function module is active. If you access such a parameter and the respective function module is not executed, you get the runtime error GETWA_NOT_ASSIGNED (Why? Well, technically thos guys are represented via field symbols which are valid only during the runtime of the function module).
The code is in SD pricing. Sometimes the code is called from function module PRICING_BUILD_XKOMV or PRICING_SUBSCREEN_PBO where TKOMV is defined as globalized parameter.
And sometimes it is called from function module PRCING_CHECK where TKOMV is NOT defined as parameter.
In the call of last function the dump occures on the ASSIGN statement :
     data: ls_tkomv like line of tkomv,
              lv_tablename(30) type c value 'TKOMV[]'.
    field-symbols: <lfs> type any table.
     assign (lv_tablename) to <lfs>.
     if <lfs> is assigned.
Any suggestions to solve the issue ?
regards,
Hans

How can I write a SQL statement which checks if a table exists?

How can I write a SQL statement which tells me whether a table exists?

execute an sql query: select * from <tablename>
catch the exception n check whether the erroe code
matches the one that occurs for table doesn't exist
that's itHow is your answer any different from the one given in the first reply?
It isn't.
As WorkForFood says DatabaseMetaData has a bunch of methods for getting information about tables but this is more useful when you don't know the names of any of the tables.. it sounds like you do so I would concur SELECT from table is probably the quickest way to go. If it helps the Xopen error should be either S1000 or 42S01 (I think) but I would try and see if there is a specific vendor code for table not found/not exists error and check for that.

How to count total no. of tables existed?

Dear Friends,
I am new to SQL.
While doing practise, I've created a number of tables at the SQL prompt. And now I don't remember the name of all the tables.
So, please suggest an sql statement like how to count the total number of tables existing there.
Your feedback is appreciated.
Kindest regards,
Lalit Sharma

But could you pls be so kind and let me know how to
do this as I mentioned above that I'm new to SQL.Hi,
You would query USER_TABLES in the same way as you would query any of the tables that you have created. :
SELECT column_list
FROM table_name
...

Newbie qn - How do I check if a schema exists?

Hi,
Sorry for askin a stupid qn.
How do I check if a particular schema exists?
Is schema the same as a user?
Thanks,
Mel

After going through other messages I think I have found the answer to my qn.
I guess connecting to sql*plus with the schema name proves that the schema exists. Can someone confirm this?
Thanks,
Mel

How to add check box in table control?

Dear frnds,
In our requirement i am used tablec ontrol for dialog programming, but i am confused about addition of check box as fields in table control.
Any help are welcome from your side.

Hi,
Chk this demo program: DEMO_DYNPRO_TABCONT_LOOP_AT
& RSDEMO02.
Another way:
Go to the edit mode of the screen select the table control column you want to make it as check box and follow the menu EDIT->CONVERT->check box.
(make sure that column definition in itab/ddtab is of size 1 char)
Also chek out this link:
Add Check box in Table control
Hope these help you.
Regards,
Anjali

How can I check if a file exists in CVI Real Time?

It would also be nice if the help file designated whether functions were supported in real time or now.
I tried this:
if(GetFileAttrs (DataFileName,NULL,NULL,NULL,NULL) == -1)
Michael Chadwell
Department of Engine and Vehicle R&D
Southwest Research Institute
Solved!
Go to Solution.

You can check if a file exists in CVI Real-Time using GetFileInfo function.
The CVI help provides a list of functions available on CVI Real-Time here: CVI Real-Time Functions
National Instruments
Product Support Engineer

How to check whether a table exists in database

test9997 is table already made in database with 3 columns :1st-varchar,2nd-number,3rd-number
declare
var1 varchar2(20);
var2 number(20);
var3 number(20);
begin
plvar1 :='this is again pl/sql';
plvar2 := 12;
plvar3 := 13;
IF (???? condition for existence of table say test1111??????) then
create table test1111(
var1 varchar2(20);
var2 number(20);
var3 number(20);
insert into test1111(plvar1,plvar2,plvar3);
else
insert into test1111(plvar1,plvar2,plvar3);;
end if;
end;
in the above code i want to check existence of a table and insertion or updation will be based on it after creation if it doesnt exist.
how to do it
please help asap

You're in the wrong forum (this one is for issues with the SQL Developer tool). You'll get more answers in the SQL And PL/SQL forum.
Have fun,
K.

How can we check the data already exists in database

hi friends
i am trying create one procedure to add customers in database with customer id as input parameter..but if in the database customer detail already exists than i would like to update that detail and if its not in the database than i would like to add that detail in the databse...how could i do this ...
any help wpould be appreciate
thanks
rommy

Hi,
If your requirement is to insert in one table and if the record exists insert into other table the merge statement doesn't work
Example (please check the column name and parameter names). I don't put commit or rollback because I don't know if you control the transaction inside this procedure or outside it.
CREATE OR REPLACE PROCEDURE add_cust(I_CUST_ID        IN VARCHAR2,
                                     I_CUST_F_NAME    IN VARCHAR2,
                                     I_CUST_L_NAME    IN VARCHAR2,
                                     I_CUST_ADD       IN VARCHAR2,
                                     I_CUST_CITY      IN VARCHAR2,
                                     I_CUST_STATE     IN VARCHAR2,
                                     I_CUST_ZIP       IN VARCHAR2,
                                     I_CUST_DOB       IN DATE,
                                     I_CUST_          IN VARCHAR2,
                                     I_CUST_ACCT_TYPE IN VARCHAR2,
                                     I_START_BAL      IN NUMBER) IS
BEGIN
   INSERT INTO CUSTOMERS C
      (CUST_ID,
       CUST_F_NAME,
       CUST_L_NAME,
       CUST_ADD,
       CUST_CITY,
       CUST_STATE,
       CUST_ZIP,
       CUST_DOB,
       CUST_)
   VALUES
      (I_CUST_ID,
       I_CUST_F_NAME,
       I_CUST_L_NAME,
       I_CUST_ADD,
       I_CUST_CITY,
       I_CUST_STATE,
       I_CUST_ZIP,
       I_CUST_DOB,
       I_CUST_);
EXCEPTION
   WHEN DUP_VAL_ON_INDEX THEN
      INSERT INTO CUSTOMER_ACCT
         (CUST_ID,
          CUST_ACCT_NO,
          cust_acct_type)
      VALUES
         (I_CUST_ID,
          CUST_ACCT_SEQ.NEXTVAL, -- CUST_ACCT_SEQ is a sequence, isn't?
          I_CUST_ACCT_TYPE);
END add_cust;Regards,

How can I check whether or not an database table exists?

Hi,
I am new to ABAP programming. And now I want to write an function that check whether an table exists in the dictionary.
It request the table name was given by the user input. So I have to check it dynamically.
Please give me some guide if you know about that.
Thanks.

Hi,
All the table names exist in DD02l table.
Fetch data from DD02l table by passing selectin screen parameter .
REPORT ysdn_new .
PARAMETERS: p_tab LIKE dd02l-tabname.
DATA: v_tab LIKE p_tab.
SELECT SINGLE tabname INTO v_tab FROM dd02l WHERE tabname = p_tab.
WRITE v_tab.
If ypu want to fetch from TADIR table only means you have to pass selection screen parameter in place of obj_name and TABL for OBJECT field.
SELECT SINGLE tabname INTO v_tab
FROM TADIR
WHERE obj_name = p_tab
AND object = 'TABL'.
This is other way of getting table name by passing selection screen parameter
this will work.
Please reward points if helpful...
Regds
Sivaparvathi

How to check from which table data is picking by datasource 0CDCY_ACT_ATTR

Hi Experts,
Could you please help me in finding out of the table from which datasource 0CDCY_ACT_ATTR is extracting.
As per my knowledge is should be extract from tables(infotypes) HRP5135 - 5141.If i am wrong please correct me.
Issue : My extractor(0cdcy_ACT_ATTR) is bringing wrong ACT_TYPE (Eg :5010) where as in table HRP5141 for that particular OBJID it is 9180( different).
Please help me why my extractor is bringing ACT_TYPE 5010.
This standard datasource and using Function Module : RCF_BIW_GET_ACTIVITY, How can i check from which table it is picking the data
Thanks in Advanve
Sree

Hi Sree,
In RSA3 on the first screen, you have the option to start debugging by marking the debug check box, once you put all the selections, click on execute and it will go to debug mode, then keep on pressing F5. It will debug your code line by line, then you can check for all the select statements.
Or once the debugging is started you will have the option to put break point on all the select statements in one shot, you can get in touch with your ABAP team.
Regards,
Durgesh.
Edited by: Durgesh Gandewar on Jul 24, 2011 8:20 PM

How to test whether a table exists in database?

How can I test whether a table exists in a database before I execute a query? If the table doesn't exist, I want first create a default table with certain name so that I can always display something in JTable.
Thanks!

Hi,
There are tow ways :
The first one is :
- load the list of tables of the Database in a Vector for exemple by using methode DatabaseMetaData.getTables () and you can test if the table exist or not in the vector by using methode Vector.contains(Object o).
The code seems Like that :
// Loading List Of Tables
// you need to load the list of tables at the begening of
// your class
Vector listOfTables = new Vector();
try
rs = yourConnection.getMetaData().getTables();
while (rs.next())
listOfTables.addElement(rs.getString(3));
catch(SQLException exp)
// When you need to test the existance of table name
// you add this line
if(listOfTables.contains(tableName))
// your code
The second one :
try
//execute your query
catch
//Create your default JTable
I hope that my response can help you!
Ciaou,
Anis

How do I check if a table exists

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