dynamic-pivot

I have a table with product id's and names, and another table with the stock of these products on certain dates. Such as Item1 had 6 stock on 1-1-2014 and 8 stock on 2-1-2014 . I'm trying to show these in a stored procedure so that it looks like a calendar, showing all the dates in a month and the stock available in the cells. What is the best way to show this? For example: Name | 1-1-2014 | 2-1-2014 | 3-1-2014 | 4-1-2014 Item1 | 6 | 8 | | 6 Item2 | | 2 | 1 | Original tables - Names ID | Name 1 | Item1 2 | Item2 Original tables - Stockdates ID | NameID | Stock | Date 1 | 1 | 8 | 2-1-2014 2 | 2

I have a table of Customers Customer ID Name 1 John 2 Lewis 3 Mary I have another table CustomerRewards TypeID Description 1 Bronze 2 Silver 3 Gold 4 Platinum 5 AnotherOne And the final table RewardID TypeID CustomerID 1 1 1 2 1 1 3 2 1 4 2 2 The customerTypes table is dynamic, many of these types can be added and removed. Basically all I want is the columns to be generated dynamically and a count in each, something like CustomerName Bronze Silver Gold Platinum AnotherOne total John 2 1 0 0 0 3 Lewis 0 1 0 0 0 1 Grand TOTAL 2 2 0 0 0 4 The problem like I said it that the types are dynamic and

I have a table of product parts like this: Parts part_id part_type product_id -------------------------------------- 1 A 1 2 B 1 3 A 2 4 B 2 5 A 3 6 B 3 and I want a query that will return a table like this: product_id part_A_id part_B_id ---------------------------------------- 1 1 2 2 3 4 3 5 6 In its actual implementation there will be millions of product parts Unfortunately, MySQL does not have a PIVOT function but you can model it using an aggregate function and a CASE statement. For a dynamic version, you will need to use prepared statements: SET @sql = NULL; SELECT GROUP_CONCAT(DISTINCT