• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 388
  • Last Modified:

Selecting and displaying data from multiple tables with a variable

Could use a bit of help, I'm loosing hair over this one....

I have 3 tables of data, and need to return a result from all 3 tables based on a variable and time limit
for example... I need to list all the entries for a client for the past seven days from all 3 db tables.


$client="testing";
$sql = "
SELECT table7.submission_id, table7.employee, table7.client, table_8.submission_id, table8.employee, table8.client, table_9.submission_id, table9.employee, table9.client
FROM table7, table8, table9
WHERE table7.client, table8.client, table9.client 
	LIKE CONCAT('%', $client ,'%') 
	AND date >= (SELECT max(date) - INTERVAL '7' DAY FROM table7.submission_date, table8.submission_date, table9.submission_date)";
 
$result = @mysql_query($sql,$connection) or die(mysql_error());	
 
if( mysql_num_rows( $result ) == 0 ) {print "<p class='error'>You currently have no reports available to you</p>";die;}
else {while( list( $submission_id, $employee, $client, $submission_date, ) = mysql_fetch_array( $result ) ) {
 
echo "
  	<table class='list_table' width='500' cellpadding='1' border='1' cellspacing='1'><tr style='height: 20px; font-size:10px;'>
            <td width='150'>$client</td>
            <td width='45'>$employee</td>
            <td width='45'>$submission_id</td>
            <td width='45'>$submisson_date</td></tr>";

Open in new window

0
piecealava
Asked:
piecealava
  • 3
  • 2
1 Solution
 
wellholeCommented:
In your sql statement you need to indicate how each of the tables are related, such as

where table7.id = table8.id
and table8.name = table9.name
and table7.client = table8.client
and table7.client = table9.client

Also, for WHERE table7.client, table8.client, table9.client

I don't believe you can use a comma like this....... If you indentify how the tables are related, you only need to use ONE of them   table7.client LIKE CONCAT('%', $client ,'%')

0
 
piecealavaAuthor Commented:
I've  incorporated your suggestions, but it returns 0 results when leaving out the like clause,  
When adding the like clause back in I get an error -- Unknown column 'testing' in 'where clause'

here is my code now... any ideas???
SELECT table7.submission_id, table7.col_4, table7.col_2, table7.submission_date, table8.submission_id, table8.col_4, table8.col_2, table8.submission_date,table9.submission_id, table9.col_2, table9.col_4, table9.submission_date
FROM table7, table8, table9
WHERE table7.col_4 = table8.col_4 
AND table8.col_4 = table9.col_4
AND table7.submission_id = table8.submission_id
AND table8.submission_id = table9.submission_id
AND table7.col_2 = table8.col_2
AND table8.col_2 = table9.col_2
AND table7.submission_date = table8.submission_date
AND table8.submission_date = table9.submission_date
 
AND table7.col_2 
	LIKE CONCAT('%', $client ,'%') 

Open in new window

0
 
wellholeCommented:
If you're getting 0 results, then its possible you're not linking the tables correctly. As for the 'testing' error, its probably from $client. Try '$client' instead.
0
 
piecealavaAuthor Commented:
Thanks for the $client fix, that works, but I still cannot get the needed results from multiple tables

How do I get the same results from table8,and table 9 included in the result?  col_2 is the client in all tables.  The code below returns the resluts I want from 1 table.  what's my next step?

$client="testing";
$sql = "
SELECT DISTINCT submission_id, col_4, col_2, submission_date
FROM table7
WHERE DATE_SUB(CURDATE(),INTERVAL 7 DAY) <= submission_date
AND col_2 LIKE ('%' '$client' '%')
	";

Open in new window

0
 
wellholeCommented:
Any reason you're using distinct? The next step is to add 1 table at a time and join them based on their relation to each other. So, add table8 and link it to table7 and see if you're getting the results you wanted. Then, move onto table9.

Assuming these tables have 1 to 1 relation, then you should always get the same number of results (unless you have conditions for each table). You can use that as your marker.
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

  • 3
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now