DELETE FROM multiple conditions
Date : March 29 2020, 07:55 AM
may help you . I have two conditions in a DELETE MySQL statement. But it does not delete the record. , I suspect this: event_registration.eventname = $event
event_registrations.eventname = $event
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How to delete value from table when having multiple conditions?
Date : March 29 2020, 07:55 AM
it should still fix some issue The short answer is likely that you need a space before AND in your string. It looks like you assume numbers will be entered in each of the textboxes, but you don't enforce that, so different errors may occur depending on the content of those textboxes. The longer answer is DON'T DO IT THIS WAY! You're opening up your code to SQL Injection attacks. Use parameterized queries instead as shown in this reference.
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Delete from using multiple conditions
Tag : sql , By : snapshooter
Date : March 29 2020, 07:55 AM
To fix the issue you can do I have a subquery that returns a subset of values from a table like: , Wrap your sql into a cte and then delete FROM your_cte. WITH MyCTE
AS
(
--insert sub query here...
)
DELETE FROM MyCTE
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delete multiple rows from a table in SQLI with multiple conditions
Tag : php , By : user187383
Date : March 29 2020, 07:55 AM
should help you out I want to delete all the rows from table called memo that the user is the same user. The text is the same text and the color is the same color: , You need AND clause between where conditions: $query = "DELETE FROM memo WHERE `username`='$user' AND `text`='$text' AND `color`='$color'";
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Delete records with multiple conditions
Tag : mysql , By : Jonathan Bernard
Date : March 29 2020, 07:55 AM
This might help you ID is your PRIMARY KEY in the table, so you can get MAX(id) to be your Reservation ID,then use NOT IN to delete by ID without MAX(id) You can try this. DELETE ba FROM bid_account ba
WHERE ba.id NOT IN
(
SELECT max_id FROM
(
SELECT auction_id, bidding_price, MAX(id) max_id
FROM bid_account
WHERE bid_flag = 'd' AND bidding_type = 's'
GROUP BY auction_id, bidding_price
) t
)
DELETE ba FROM bid_account ba
WHERE ba.id NOT IN
(
SELECT min_id FROM
(
SELECT auction_id, bidding_price, MIN(id) min_id
FROM bid_account
WHERE bid_flag = 'd' AND bidding_type = 's'
GROUP BY auction_id, bidding_price
) t
)
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