Leetcode Problem 2252. Dynamic Pivoting of a Table

2252. Dynamic Pivoting of a Table

Leetcode Solutions

[MySQL] Dynamic Pivot Table Creation

  1. Increase the group_concat_max_len session variable to accommodate a potentially long concatenated string of store names.
  2. Use GROUP_CONCAT with DISTINCT to create a list of SUM statements for each store, which will be used as columns in the pivot table.
  3. Concatenate the SUM statements with the rest of the SQL query to form a complete dynamic pivot query.
  4. Prepare the dynamic SQL query using the PREPARE statement.
  5. Execute the prepared statement to get the pivot table.
  6. Deallocate the prepared statement to clean up.
erDiagram
    Products {
        int product_id
        varchar store
        int price
        product_id store PK
    }

[MySQL] Static Pivot Table Creation

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