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2208/天天乐学考试答案/MySQL练习（一）.md

@@ -230,11 +230,11 @@ FROM tb_books b;
 UPDATE tb_books b
 SET b.note = SUBSTR(b.note,INSTR(b.note,'-')+2);
 
-#7
-SELECT b.book_id, b.title, 
-FROM tb_books b
-WHERE YEAR(b.publication_date) BETWEEN 1980 AND 2010
-ORDER BY
+#7 tj11
+SELECT b.book_id, b.title, a.author_id, a.author_name, b.publication_date
+FROM tb_books b, tb_authors a
+WHERE b.note = a.author_name  AND YEAR(b.publication_date) BETWEEN 1980 AND 2010
+ORDER BY b.publication_date DESC;
 
 #8