Re: in PostgreSQL 9.0.2 / pgAdmin III - ERROR: relation "[table name]" already exists
От | Lew |
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Тема | Re: in PostgreSQL 9.0.2 / pgAdmin III - ERROR: relation "[table name]" already exists |
Дата | |
Msg-id | if52ld$b4l$2@news.albasani.net обсуждение исходный текст |
Ответ на | in PostgreSQL 9.0.2 / pgAdmin III - ERROR: relation "[table name]" already exists (thewhitelantern <thewhitelantern@gmail.com>) |
Список | pgsql-novice |
thewhitelantern wrote: > > I'm a super noob, and based on the advice of friends, I chose the PostgreSQL > platform to install on my Mac 10.6.5 and I just bought a copy of Simply SQL. > > The problem is, I've created a database in the graphical interface other > than the 'postgres' default database (for some reason, I was unable to do > this same thing in the command line interface for psql console, I think I've > followed the instructions, but neither here nor there) > > I click on the "SQL" button at the top and it brings up the Query tool. > > In chapter two of SIMPLY SQL, i'm just cutting and pasting / manually typing > in this code > > _________________________________________________ > /* Chapter 2: SELECT Overview */ > > /* Title and Category of Entries */ > > CREATE TABLE entries > ( > id INTEGER NOT NULL PRIMARY KEY > , title VARCHAR(99) NOT NULL > /* Note: use DATETIME if your database system does not support TIMESTAMP > */ > , created TIMESTAMP NOT NULL > , updated TIMESTAMP NULL > , category VARCHAR(37) NULL > , content TEXT NULL > ); > > INSERT INTO entries > ( id , title , created , updated , category ) > VALUES > (423 , 'What If I Get Sick and Die?' , '2008-12-30' , '2009-03-11' , > 'angst') > ; > INSERT INTO entries > ( id , title , created , updated , category ) > VALUES > (524 , 'Uncle Karl and the Gasoline' , '2009-02-28' , NULL , 'humor') > ; > INSERT INTO entries > ( id , title , created , updated , category ) > VALUES > (537 , 'Be Nice to Everybody' , '2009-03-02' , NULL , 'advice') > ; > INSERT INTO entries > ( id , title , created , updated , category ) > VALUES > (573 , 'Hello Statue' , '2009-03-17' , NULL , 'humor') > ; > INSERT INTO entries > ( id , title , created , updated , category ) > VALUES > (598 , 'The Size of Our Galaxy' , '2009-04-03' , NULL , 'science') > ; > > SELECT > title > , category > FROM > entries > ; > /* Results should look like this -- > title category > What If I Get Sick and Die? angst > Uncle Karl and the Gasoline humor > Be Nice to Everybody advice > Hello Statue humor > The Size of Our Galaxy science > */ > _____________________________________ > > THe first time I execute it, it does it's table, just like in the book. > > However, I'm called to put a WHERE filter on the code at the end > > WHERE > id = 524 > ; > > THen when I try to execute it again, it gives this error message > > ERROR: relation "entries" already exists > > ********** Error ********** > > ERROR: relation "entries" already exists > SQL state: 42P07 > > Even when I try to Clear the History, delete the current document an make a > new one, or even try to do a DROP staement, I still get this same message. > The only way I can eliminate this message is if I delete the database in the > pgAdmin Object browser, recreate a new database and do it again, at which > point, it stops giving the error message, but only once. > > So does this mean that I have to delete the database EVERY TIME I CHANGE THE > CODE?!? Absolutely not. It means do not run the CREATE TABLE every time you change the SELECT. Apparently you're running the entire script each time, not just the SELECT. -- Lew Ceci n'est pas une pipe.
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