Ashutosh Dhundhara a écrit :
Hi,
I was working on RFE #861 (Simulate UPDATE query).
Lets say I have two tables:
`table_1`
+----+----------+
| id | value |
+----+----------+
| 10 | value_10 |
| 20 | value_20 |
+----+----------+
`table_2`
+----+----------+
| id | value |
+----+----------+
| 10 | value_10 |
| 20 | value_20 |
+----+----------+
UPDATE Query: UPDATE table_1, table_2 SET table_1.value = 'NEW_VALUE',
table_2.value='NEW_VALUE' WHERE table_1.id > 10 AND table_2.id > 10;
This will affect 2 rows.
How to simulate this query using SELECT statement?
I was trying:
SELECT DISTINCT table_1.value, table_2.value FROM table_1, table_2 WHERE table_1.value
<> 'NEW_VALUE' AND table_2.value <> 'NEW_VAUE' AND table_1.id
> 10 AND table_2.id > 10;
but this only returns 1 row.
Can this be done in a single query only?
Regards,
Ashutosh Dhundhara
Hi Ashutosh,
any reason why in your SELECT statement, you are using "<>
'NEW_VALUE'"
but in your UPDATE statement, you are using "='NEW_VALUE'" ?
--
Marc Delisle (phpMyAdmin)