adding description for each query

docs/db/sql.md

@@ -1,9 +1,10 @@
 ## Example of SQL queries
 
-### sign up export
+### sign up
+
+The following query returns the users that are currently in the sign up process.
 
 ```sql
--- query for **SINGUP**
 SELECT DISTINCT
     u.id,
     u."githubLogin",
@@ -17,7 +18,9 @@ WHERE u.id NOT IN (SELECT "userId" FROM public.user_role)
 AND u.id NOT IN (SELECT "userId" FROM public.progress p WHERE p."userId"=u.id);
 ```
 
-### Toad export
+### Toad
+
+The following query returns the users that are currently in the toad process. The information includes user and games info
 
 ```sql
 -- query for **TOAD**
@@ -50,7 +53,9 @@ AND r.attrs ->> 'games' IS NOT NULL
 ORDER BY r.attrs ->> 'score' ASC;
 ```
 
-### Administration export
+### Administration
+
+The following query returns the users currently in the administration process. All information about the user, the number of attempts and current phase.
 
 ```sql
 -- query for **administration**
@@ -97,9 +102,9 @@ GROUP BY u.id, r.attrs;
 
 ### xp per user per activity
 
+The following query returns the amount of xp per user and per activity
 
 ```sql
--- user | xp | last activity : with parent association, "this may be stupid to put the path alrady as the parent!"
 WITH xp_user AS (
     SELECT 
         u."githubLogin",
@@ -122,6 +127,8 @@ LEFT JOIN public.event e ON e.id=xu."eventParentId";
 
 ### user per xp
 
+The following query returns the amount of xp per user
+
 ```sql
 -- user per xp
 SELECT
@@ -147,6 +154,8 @@ ORDER BY xp.amount DESC;
 
 ### group status
 
+The following query returns the groups status per captain
+
 ```sql
 -- group status
 SELECT
@@ -160,6 +169,8 @@ ORDER BY u."githubLogin" ASC;
 
 ### group progresses
 
+The following query returns the progress per group
+
 ```sql
 -- group progresses
 WITH progress_group AS (