Please help, this must be easy for experinced MySQL users but for me as a
newbie isn't it. I have tried to find the answer on the things below in older
MySQL manuals but without any success...
I have a problem with a few sql-queries because I have written the questions
with
subselect statements and then will they not work on older MySQL DB:s. Can any
one help me
to say haw to solve it without subselect!
Today looks the questions like this and works fine in MySQL 4.x.x but not in
3.23.55 where I also need to use them:
SELECT (SELECT count(SUB.S_ID) FROM SUB
LEFT JOIN SUBS ON SUBS.S_ID = SUB.S_ID)
/(SELECT COUNT(*) from SUB);
SELECT COUNT(SUBS.NEW_ID)+(SELECT COUNT(SUBS_D.NEW_ID)
FROM SUBS_D WHERE
SUBS.NEW_ID=SUBS_D.NEW_ID)
FROM SUBS WHERE SUBS.NEW_ID=1;
SELECT (SELECT count(*) from SUBS)-(SELECT count(SUBS.S_ID) FROM SUB LEFT JOIN
SUBS ON
SUBS.S_ID = SUB.S_ID)+(SELECT count(*) FROM SUBS_D);
Another question is how do I do when I want to compare two tables, normally is
it no
problem to get a list with rows that exist i both tables, but how do I do if I
want to to
have the diffrence listed instead, the rows that only appears in one of the
tables?
Thanks in advance!
/Joppe
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