Problem quoting table names

Question

Hi,
I want to use my tables capitalized, but something is not working right. I am using Oracle Database Express Edition 2.1.0.00.39.
Creating and altering a table as follows works:
"CREATE TABLE Mitarbeiter (
     MA_ID number NOT NULL,
     ORG_ID number NOT NULL,
     Nachname char(128) NOT NULL,
     Vorname char(128) NOT NULL,
     Geburtsdatum date NOT NULL,
     Kommentar varchar2(100),
     Rang char(3) DEFAULT 'MA' NOT NULL,
     PRIMARY KEY ( MA_ID )
ALTER TABLE Mitarbeiter ADD CONSTRAINT OrgEinheit FOREIGN KEY ( ORG_ID ) REFERENCES OrgEinheit ( ORG_ID );
If I quote the table name like
"CREATE TABLE "Mitarbeiter" (
     MA_ID number NOT NULL,
     ORG_ID number NOT NULL,
     Nachname char(128) NOT NULL,
     Vorname char(128) NOT NULL,
     Geburtsdatum date NOT NULL,
     Kommentar varchar2(100),
     Rang char(3) DEFAULT 'MA' NOT NULL,
     PRIMARY KEY ( MA_ID )
ALTER TABLE "Mitarbeiter" ADD CONSTRAINT OrgEinheit FOREIGN KEY ( ORG_ID ) REFERENCES OrgEinheit ( ORG_ID );
the alter statement is not executed successfully. I get the error message "ORA-00942 table or view does not exist".
Who can help?
Udo

Answer 1

Thanks,
I am not planning to have more headaches,
everything's fine now. Sorry asking about a selfmade
problem quoting only part of the table names.
UdoNo need to apologise, it's a common thing that people don't understand how the database stores object names in UPPER by default and how double quotes (often seen used in SQL generated by 3rd party tools) actually force the case of the names.
The below example shows how easily confusion could be caused if you start using double quotes...
SQL> create table mytable (x number);
Table created.
SQL> create table "mytable" (x number);
Table created.
SQL> create table "MyTable" (x number);
Table created.
SQL> select table_name from user_tables where upper(table_name) = 'MYTABLE';
TABLE_NAME
MYTABLE
MyTable
mytable
SQL> insert into mytable values (1);
1 row created.
SQL> insert into "mytable" values (2);
1 row created.
SQL> insert into "MyTable" values (3);
1 row created.
SQL> select * from mytable;
         X
         1
SQL> select * from "mytable";
         X
         2
SQL> select * from "MyTable";
         X
         3
SQL>