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* Postgresql Function
@ 2012-01-18 09:03 Rehan Saleem <pk_rehan@yahoo.com>
0 siblings, 0 replies; 3+ messages in thread
From: Rehan Saleem @ 2012-01-18 09:03 UTC (permalink / raw)
To: pgsql-sql
hi
i want to create a function in postgresql that take input for columns from user for example first_name , last_name, addres. and will put them into table , and i also want to use exception if user enters wrong data. will some one help me how can i create thats function , because i am new to postgresql . i know how to do it in MS-SQL , i also have that code .if you dont understand what am trying to say . i can post sql code .thanks
REHAN SALEEM
^ permalink raw reply [nested|flat] 3+ messages in thread
* PostgreSQL Function
@ 2012-01-18 09:10 Rehan Saleem <pk_rehan@yahoo.com>
0 siblings, 1 reply; 3+ messages in thread
From: Rehan Saleem @ 2012-01-18 09:10 UTC (permalink / raw)
To: pgsql-sql
hi
i want to create a function in postgresql that take input for columns from user for example first_name , last_name, addres. and will put them into table , and i also want to use exception if user enters wrong data. will some one help me how can i create thats function , because i am new to postgresql . i know how to do it in MS-SQL , i also have that code .if you dont understand what am trying to say . i can post sql code .thanks
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: PostgreSQL Function
@ 2012-01-18 09:25 Pavel Stehule <pavel.stehule@gmail.com>
parent: Rehan Saleem <pk_rehan@yahoo.com>
0 siblings, 0 replies; 3+ messages in thread
From: Pavel Stehule @ 2012-01-18 09:25 UTC (permalink / raw)
To: Rehan Saleem <pk_rehan@yahoo.com>; +Cc: pgsql-sql
Hello
2012/1/18 Rehan Saleem <pk_rehan@yahoo.com>
> hi
> i want to create a function in postgresql that take input for columns from
> user for example first_name , last_name, addres. and will put them into
> table , and i also want to use exception if user enters wrong data. will
> some one help me how can i create thats function , because i am new to
> postgresql . i know how to do it in MS-SQL , i also have that code .if you
> dont understand what am trying to say . i can post<http://www.dbforums.com/#; sql
> code .thanks
>
>
CREATE TABLE users(id serial PRIMARY KEY, first_name varchar(10), last_name
varchar(10));
CREATE OR REPLACE FUNCTION new_user(fname varchar, lname varchar)
RETURNS int AS $$
DECLARE r int;
BEGIN
-- custom exception -- lname cannot be empty or NEMO
IF trim(lname) = '' OR lower(lname) = 'nemo' THEN
RAISE EXCEPTION 'bad last_name: "%"', lname;
END IF;
INSERT INTO users(first_name, last_name) VALUES(lname, fname) RETURNING
id INTO r;
RETURN r;
END;
$$ LANGUAGE plpgsql;
postgres=# select new_user('pavel','stehule');
new_user
----------
1
(1 row)
postgres=# select new_user('pavel','very long text');
ERROR: value too long for type character varying(10)
CONTEXT: SQL statement "INSERT INTO users(first_name, last_name)
VALUES(lname, fname) RETURNING id"
PL/pgSQL function "new_user" line 8 at SQL statement
postgres=# select new_user('pavel','nemo');
ERROR: bad last_name: "nemo"
postgres=#
Regards
Pavel Stehule
^ permalink raw reply [nested|flat] 3+ messages in thread
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2012-01-18 09:03 Postgresql Function Rehan Saleem <pk_rehan@yahoo.com>
2012-01-18 09:10 PostgreSQL Function Rehan Saleem <pk_rehan@yahoo.com>
2012-01-18 09:25 ` Re: PostgreSQL Function Pavel Stehule <pavel.stehule@gmail.com>
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