a

Semester 2/SQL Hell pt4.txt

@@ -0,0 +1,45 @@
+/* What are the suppliers that supply all parts using NOT EXISTS */
+/* sp difference A */
+select DISTINCT snumber
+from spj as c
+where not EXISTS 
+/* A */
+/* Cross Product */
+(select DISTINCT b.snumber
+ from part as a cross join spj as b 
+ where c.snumber = b.snumber and not EXISTS
+ /* difference cross product sp */
+ (select snumber, pnumber from spj
+  where b.snumber = spj.snumber and a.pnumber = spj.pnumber));
+
+  
+  /* What are the suppliers that supply all parts using NOT EXISTS * */
+/* sp difference A */
+select DISTINCT snumber
+from spj as c
+where not EXISTS 
+/* A */
+/* Cross Product */
+(select *
+ from part as a cross join spj as b 
+ where c.snumber = b.snumber and not EXISTS
+ /* difference cross product sp */
+ (select * from spj
+  where b.snumber = spj.snumber and a.pnumber = spj.pnumber));
+  
+  
+/* What are the suppliers that supply all parts using NOT EXISTS *, list their names and their cities */
+select snumber, sname, city from supplier
+WHERE snumber in
+(/* sp difference A */
+select DISTINCT snumber
+from spj as c
+where not EXISTS 
+/* A */
+/* Cross Product */
+(select *
+ from part as a cross join spj as b 
+ where c.snumber = b.snumber and not EXISTS
+ /* difference cross product sp */
+ (select * from spj
+  where b.snumber = spj.snumber and a.pnumber = spj.pnumber)));

lamp/mysql/binlog.index

@@ -1,4 +1,3 @@
-./binlog.000019
 ./binlog.000020
 ./binlog.000021
 ./binlog.000022
@@ -14,3 +13,4 @@
 ./binlog.000033
 ./binlog.000034
 ./binlog.000035
+./binlog.000036

lamp/mysql/d6a8f2b56d7f.pid

@@ -0,0 +1 @@
+172