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This is my sql outcome:
What I am trying to achieve is to show the garden and under that it shows the hose pipe ,lawn moar etc.
How to write the query?
If I understand you correct you would normaly do that somehow like that.
cat_id | parent_id | cat_name | cat order
1 0 Garden 1
2 1 Hose Pipe 1
3 1 Lawn Moar 2
in this case Garden for example would have the cat_id 1 and parent_id 0 and all subcategories have their own incremented id and the parent_id of garden, which would be 1 in this case!
then you can query for your categories and foreach of them query for the subcategories where the parent_id is the cat_id of the maincategory!
here you have a nice tutorial on how to display it recursive:
https://www.codexworld.com/dynamic-category-subcategory-tree-php-mysql/
that way you also only need to save the imagepath only once in your maincat!
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Below is my SQL table
| ID | Value |
| 1 | A1 A2 A3 |
I would like to delete the A3 in the column: Value. Is there any method to do this?
There's no way to edit/remove part of string, you just need to update whole cell. It's up tou you, how you'll prepare update data in your code.
SQL:
update tablename set Value = 'A1 A2' where ID=1
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In my MySQL database, I'm trying way of creating a table to track daily views on 100 items. Each day would insert a new row for each item. So the table columns would look like this:
| ItemID | ItemName | Hits |
Is there a way to store daily hits for items?
What you could do is have a table with a structure like:
| item_hits |
|---------------|
| itemID | date |
Then your SQL query could look like
SELECT count(*) FROM item_hits WHERE date = '2015/04/15' and itemID = 7;
You wouldn't need to save the itemName in the table, because you should be able to get the itemName by joining it to your items table.
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I'm looking for the right syntax using Zend db to show a table that is sorted by the count. For example, my mysql table looks like this:
Users Description
1 topic1
1 topic2
2 topic3
I want the output to look like:
User 1 (2 descriptions)
User 2 (1 description)
The raw query you're looking for
SELECT users, COUNT(*) count
FROM table1
GROUP BY users
ORDER BY COUNT(*) DESC
Output:
| USERS | COUNT |
|-------|-------|
| 1 | 2 |
| 2 | 1 |
Here is SQLFiddle demo
I'm not an expert in Zend but your query may look something between the lines of
$select = $db->select()
->from('table1', array('users', 'count' => '(COUNT(*))'))
->group('users')
->order('(COUNT(*)) DESC');
$stmt = $db->query($select);
$result = $stmt->fetchAll();
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i have the following query bellow
SELECT * FROM subcat where catid in (2) order by id desc
what i am trying to do is select one number only in catid i have ex:
1,2,3,4,5
this work but only when "catid" start with number "2" then have ","
example
ID | 1
subcat_name | PHP
catid | 2,3,4
ID | 2
subcat_name | ASP
catid | 5,2,3
ID | 3
subcat_name | MYSQL
catid | 6
ID | 4
subcat_name | C++
catid | 2
i want to select the subcat with only catid = 2
Try this
SELECT * FROM subcat where FIND_IN_SET(2,catid) order by id desc
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I intend that after selecting an option from a list, a new list appears according to the option selected.
But the second select list, sends a query to the database, depending on the choice list in the first select!
example:
table bd
| A | 1 |
| A | 2 |
| B | 3 |
| B | 4 |
first select
A or B
second select
if select A
1
2
if select B
3
4
A simple search for a filtered dropdown list brought me to the following code on GitHub which does a decent job explaining how to program one of these lists on your own. You can find it here.
Hope this helps.