SQL combine to summations queries?
| From: | Bas Jobsen | Date: | Thu, 06 Sep 2001 15:38:21 +0000 |
| Subject: | SQL combine to summations queries? | ||
| References: | 1 2 | Groups: | php.db |
| Request: | Send a blank email to php-db+get-12226@lists.php.net to get a copy of this message | ||
Hello,
I don't understand the following, who can help?
I have got two queries:
SELECT SUM(fielda) FROM table1
and
SELECT SUM(fieldb) FROM table2
I thought this would be the same as:
SELECT SUM(fielda.table1),SUM(fieldb.table2) FROM table1, table2.
But, itn't, why?
Tnx,
Bas Jobsen