January 9, 2011

Count especific table rows in mysql

Question by NORM

I want to count how many rows I have in a mysql table and display it in html.

For example:

There is: Item 1, Item 2, Item 3, Item 4, Item 5, Item 6

If Item 1 and Item 2 are filled, I want a html code to say – 2 items in row

any ideas?

Answer by Starx

IF its total rows you are after, then as Nishant mentioned above you could do something like this

$query = "SELECT COUNT(*) FROM mytable WHERE myfield='myvalue'"; 

I am counting all the ids, because it will reduce the time taken to calculate the total instead of ‘*’ and

Thanks to Nico, count(*) and count(column) are not so different considering performance. Here is a comparision

Use a where condition to narrow your total as you require.

Author: Nabin Nepal (Starx)

Hello, I am Nabin Nepal and you can call me Starx. This is my blog where write about my life and my involvements. I am a Software Developer, A Cyclist and a Realist. I hope you will find my blog interesting. Follow me on Google+

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