Re: SQL Question
| From: | Ermanno Iannacci | Date: | Sat, 14 Oct 2000 00:21:34 +0000 |
| Subject: | Re: SQL Question | ||
| Groups: | php.db | ||
| Request: | Send a blank email to php-db+get-3606@lists.php.net to get a copy of this message | ||
This is MSJET-SQL:
SELECT Table2.login
FROM Table1 LEFT JOIN Table2 ON Table1.login = Table2.login;
"LEFT JOIN" make the query choose all rows from the first table (Table1) and
only matching rows from the second table (Table 2).
Syntax can be different across different RDBMS.
--------------------------------------------------------
Hi everybody,
I've got just a quick question to you all who are familiar with SQL.
I don't know how to select records, which are in one table and not in
another one. In other terms, I want to select records which are not present
in both tables depending on one field.
For example :
Table 1
+---------+-----------+
+ Login + Password +
+---------+-----------+
+ steph + toto +
+ yann + titi +
+---------+-----------+
Table 2
+---------+-----------+-------------+--------------+ ...
+ Login +first name + second name + Address + ...
+---------+-----------+-------------+--------------+
+ steph + xxxxxx + yyyyyyyyyy + zzzzzzzzzzzzz +
+ isab + xxxxxx + yyyyyyyyyy + zzzzzzzzzzzzz +
+---------+------------+------------+--------------+
I'd like to find a SQL statement to delete the second row (isab) from Table
2 depending on the login field.
Could anyone help please ?
Thanks
Stéphane
Stéphane Cesbron
Chargé du développement Internet/Intranet
AUDENCIA
Nantes.Ecole de Management
8 route de la Jonelière
B.P. 31222
44312 Nantes Cedex 3
Tél : 02.40.37.34.47
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