hi, there. i'm trying to write a SQL statement which does the following
things.
1. checks if data already exists in the database
2. if not, insert data into database otherwise skip.
for example, i'd like to insert a student called 'Michael Jordan' whose
ID is 'JORDANMICHAEL' only if the id,
On Wed, Jun 21, 2006 at 10:59:42PM -0700, nuno wrote:
insert into student (studentid, fname, lname)
select 'JORDANMICHAEL', 'Michale', 'Jordan' from student where
studentid not in
(select studentid from student);
however, this does not seem to work. it does not insert data even if it
does
nuno wrote:
hi, there. i'm trying to write a SQL statement which does the
following things.
1. checks if data already exists in the database
2. if not, insert data into database otherwise skip.
for example, i'd like to insert a student called 'Michael Jordan'
whose ID is 'JORDANMICHAEL'
