Doubt with creation of table!

Question

Hi Friends,
I Have studied that we cannot create tables with that the name of ORACLE SERVER RESERVED clause like select,insert etc. Recenty i came across a query
Create table TIMESTAMP (
                         ENO NUMBER(1)
                       );TIMESTAMP is a datatype but the table gets created without any errors.
In this example
create table "SELECT" (
                        ENO NUMBER(1)
                      );How does oracle differntiate it from the table name and the SELECT clause. I could not understand the logic also of what difference does it make when u give the table name in double quotes.
Regards,
Manoj

Answer 1

Hi,
This is very important.
>
"Nonquoted identifiers cannot be Oracle Database reserved words. Quoted identifiers can be reserved words, although this is not recommended."
>
Why? because I don't know about someone that type sql statements with object names between " ". So, anybody can waste a lot of time trying to indetify why the table name is invalid or they think that need to be grented by the correct privileges. So, if you put an object name in lower case between " " you need to referencing it with lower case, same case with upper case object name.
SQL>create table "SELECT" (id number);
Table created.
SQL>select table_name from dba_tables where table_name = 'select';
no rows selected
SQL>select table_name from dba_tables where table_name = 'SELECT';
TABLE_NAME
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
SELECT
SQL>drop table "SELECT" purge;
Table dropped.
SQL>create table "select" (id number);
Table created.
SQL>select table_name from dba_tables where table_name = 'SELECT';
no rows selected
SQL>select table_name from dba_tables where table_name = 'select';
TABLE_NAME
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
selectSo, that is very tiring.
HTH -- johnxjean --