New to mysqli library - Multiple query problem


Posted on 16th Feb 2014 07:03 pm by admin

Greetings,

I am writing a batch program that executes 3 queries on a single page. Using mysql libraries and regular queries works just fine. I am rewriting the page to include a stored procedure. The first query gets several thousand rows from a table, the second query calls a stored procedure which returns a resultset and the third query updates the table with the results from the stored procedure. Queries 2 & 3 are inside a while loop and execute once for every record from query 1.

Here is my connection string to the database:
$connect = mysqli_connect("localhost", "username", "password","database") or
die ("The database is unavailable. Please try again later.");

Query 1 = $results = mysqli_query($connect,$query)
Query 2 = $results1 = mysqli_query($connect,$query1);
Query 3 = $results2 = mysqli_query($connect,$query2);

$query = Select * from table
$query1 = Call stored Procedure
$query2 = Update table set ...

The above fails with this error message:
Warning: mysqli_fetch_row() expects parameter 1 to be mysqli_result, boolean given in pagename on line 103

If I create 3 connection variables everything works as expected.
$connect = mysqli_connect("localhost", "username", "password","database") or
die ("The database is unavailable. Please try again later.");
$connect1 = mysqli_connect("localhost", "username", "password","database") or
die ("The database is unavailable. Please try again later.");
$connect2 = mysqli_connect("localhost", "username", "password","database") or
die ("The database is unavailable. Please try again later.");

Is there a way to accomplish what I am trying to do without creating 3 identical connections to the database?

I am a noob to this so go easy on my coding practices. This code actually processes 40+ records per second on an old Dell laptop

No comments posted yet

Your Answer:

Login to answer
205 Like 15 Dislike
Previous forums Next forums
Other forums

gmmktime or mktime
I live in the UK, i am within the GMT (with daylight saving time ie 1 hour difrence between summer a

Problem with passing variables
I'm not really a php programmer so I'm really struggling with this issue.

I have a banner s

Prevent PHP mail( ) from appending hostname to from address
Hey guys,

I want to be able to send texts to phones via email (since each phone has their own

'210010106140040100' == '210010106140040101'
Debugging this simple line of a PHP script

Code: if($a == $b){ }
I've found that with val

Cloud Computing?
Hello,

I was wondering if anyone could help explain this term to me. I'm starting to hear it

Problem with HTTP Caching...?
Hi there, im trying to implement caching. But it doesn't always work.
I post it here because ther

If statement help please.
Hello on my site I have 2 content boxes. 1 is for the main content (which is the biggest one) and th

please hep to get values from a table row
can anyone tel me how I can select and get data from one row by pressing an Edit button in that row

Reg Ex
Im trying to search for the string: srv_9 (Dead ???)

I thought to use preg_match, however I d

Need help with a mail notify function
I was tasked with setting up a site that's been prewritten. The site is basically a form that captur

Sign up to write
Sign up now if you have flare of writing..
Login   |   Register
Follow Us
Indyaspeak @ Facebook Indyaspeak @ Twitter Indyaspeak @ Pinterest RSS



Play Free Quiz and Win Cash