Introduce a new table for diffs_changes to perform analysis on ever…

…y change

README.md

@@ -58,14 +58,16 @@ SELECT author_name, author_email FROM commits ORDER BY author_name DESC, author_
 SELECT author_name, author_email FROM commits WHERE author_email LIKE "%gmail%" ORDER BY author_name
 SELECT * FROM commits WHERE LOWER(author_name) = "amrdeveloper"
 SELECT author_name FROM commits GROUP By author_name
-SELECT author_name FROM commits GROUP By author_name having author_name = "AmrDeveloper"
+SELECT author_name FROM commits GROUP By author_name HAVING author_name = "AmrDeveloper"
 
 SELECT * FROM branches
 SELECT * FROM branches WHERE is_head = true
 SELECT name, LEN(name) FROM branches
 
 SELECT * FROM tags
 SELECT * FROM tags OFFSET 1 LIMIT 1
+
+SELECT path, count() AS changes_count, SUM(insertions) AS additions, SUM(removals) AS removes FROM diffs_changes GROUP BY path ORDER BY changes_count DESC
 ```
 
 ---

docs/structure/tables.md

@@ -53,6 +53,19 @@ show tables
 
 ---
 
+## Diffs Changes table
+
+| Name       | Type    | Description                                                              |
+| ---------- | ------- | ------------------------------------------------------------------------ |
+| commit_id  | Text    | Commit id                                                                |
+| insertions | Integer | Number of inserted lines in one change                                   |
+| removals   | Integer | Number of deleted lines in one change                                    |
+| mode       | Text    | Change mode A for Add, D for Delete, M for Modification or R for Rewrite |
+| path       | Text    | Location of the change                                                   |
+| repo       | Text    | Repository full path                                                     |
+
+---
+
 ### Branches table
 
 | Name         | Type     | Description                      |