The first step is to make sure that you actually understand the SQL for the queries that you need to do. From your post, I can't really tell. I would start with first query, the one to get the list of client's. Then code just that one SQL statement. See if you can get that to work and share your progress with us.

From the description, you appear to be talking about a spreadsheet type of representation with clientNames in column A and more columns B...XX with more info. For some clients, there is no relevant info in some columns.

Rather than a 2D matrix, I would consider a Hash of Hash,HoH. The data stucture would look like:

 ( client23 => { columnAname => 123, columnXYname => 'Bob'},
   client42 => { columnXYname => 'Jim', columnBname => 765}, );

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The clients are the hash key and sub-hashes correlated the column Name with a value. This way as the structure each row of a 2D matrix expands to more columns (it sounds like that can dynamically happen), you don't have to expand each row with zero/null placeholders, just fill in relevant data. Anyway try one SQL query and tell us how that goes.

In reply to Re: Help with MySQL SELECT into multidimensional array by Marshall
in thread Help with MySQL SELECT into multidimensional array by btongeorge

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