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POMySQL select count with join
 

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    <p>I am trying to get a list of data from multiple tables in a view for analytics - most of the data comes from one table and then I need to get the counts from multiple other tables to show number of logins, number of users and so on.</p> <p>I am using the below query (simplified to show only some rows and one join):</p> <pre><code>Select companies.company_name, companies.last_login, companies.last_ip, (SELECT COUNT(*) FROM auditing_master GROUP BY company_id) AS audit_count From companies Left Join auditing_master On auditing_master.company_id = companies.id Group by companies.id </code></pre> <p>When I run this I get an error:</p> <pre><code>#2014 - Commands out of sync; you can't run this command now </code></pre> <p>If I run it without the GROUP BY in the SELECT COUNT (*) then it doesn't give any error but it returns a count of all entries in the auditing_master table regardless of which company it refers to.</p> <p>How can I get a single query to show me the required data from the companies table whilst also showing a total from auditing master (and others) grouped by the company ID?</p> <p><strong>Edit</strong></p> <p>Code when using multiple count/joins:</p> <pre><code>Select c.company_name, c.last_login, c.last_ip, COUNT(am.company_id) AS audit_count, COUNT(u.company_id) AS users, COUNT(e.company_id) AS employees From companies c Left Join auditing_master am On am.company_id = c.id Left Join users u On u.company_id = c.id Left Join employees e On e.company_id = c.id Group by c.id </code></pre> <p>This query locally in PHPMyAdmin on WAMP with only around 10 companies takes 7 seconds to complete and give "meanngless" results that don't correlate to anything.</p> <p>Thanks</p>
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