@@ -418,7 +418,10 @@ copies_sold
418418<details ><summary >Solution</summary >
419419
420420``` sql
421- SELECT * FROM books ORDER BY copies_sold DESC LIMIT 5 ;
421+ SELECT *
422+ FROM books
423+ ORDER BY copies_sold DESC
424+ LIMIT 5 ;
422425```
423426
424427</details >
@@ -443,7 +446,8 @@ country
443446<details ><summary >Solution</summary >
444447
445448``` sql
446- SELECT * FROM travelers
449+ SELECT *
450+ FROM travelers
447451WHERE country NOT IN (' Canada' ' Mexico' ' USA'
448452```
449453
@@ -548,7 +552,9 @@ tuition_received (boolean)
548552<details ><summary >Solution</summary >
549553
550554``` sql
551- SELECT * FROM students WHERE tuition_received IS false;
555+ SELECT *
556+ FROM students
557+ WHERE tuition_received IS false;
552558```
553559
554560</details >
@@ -677,7 +683,37 @@ employees
677683<details ><summary >Solution</summary >
678684
679685``` sql
680- SELECT * FROM companies ORDER BY employees DESC ;
686+ SELECT *
687+ FROM companies
688+ ORDER BY employees DESC ;
689+ ```
690+ 691+ </details >
692+ 693+ ---
694+ 695+ ** [ ⬆ Back to Top] ( #sql-coding-challenges-for-beginners ) **
696+ 697+ ## Counting and Grouping
698+ 699+ Given a demographics table, your task is to return a table that shows a count of each race represented in descending order.
700+ 701+ ```
702+ demographics
703+ ------------
704+ id
705+ name
706+ birthday
707+ race
708+ ```
709+ 710+ <details ><summary >Solution</summary >
711+ 712+ ``` sql
713+ SELECT race, COUNT (* ) AS count
714+ FROM demographics
715+ GROUP BY race
716+ ORDER BY count DESC ;
681717```
682718
683719</details >
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