diff --git a/.idea/.gitignore b/.idea/.gitignore new file mode 100644 index 0000000..73f69e0 --- /dev/null +++ b/.idea/.gitignore @@ -0,0 +1,8 @@ +# Default ignored files +/shelf/ +/workspace.xml +# Datasource local storage ignored files +/dataSources/ +/dataSources.local.xml +# Editor-based HTTP Client requests +/httpRequests/ diff --git a/.idea/SQL.LetsGetTogether.iml b/.idea/SQL.LetsGetTogether.iml new file mode 100644 index 0000000..d6ebd48 --- /dev/null +++ b/.idea/SQL.LetsGetTogether.iml @@ -0,0 +1,9 @@ + + + + + + + + + \ No newline at end of file diff --git a/.idea/misc.xml b/.idea/misc.xml new file mode 100644 index 0000000..639900d --- /dev/null +++ b/.idea/misc.xml @@ -0,0 +1,6 @@ + + + + + + \ No newline at end of file diff --git a/.idea/modules.xml b/.idea/modules.xml new file mode 100644 index 0000000..a731dc1 --- /dev/null +++ b/.idea/modules.xml @@ -0,0 +1,8 @@ + + + + + + + + \ No newline at end of file diff --git a/.idea/vcs.xml b/.idea/vcs.xml new file mode 100644 index 0000000..35eb1dd --- /dev/null +++ b/.idea/vcs.xml @@ -0,0 +1,6 @@ + + + + + + \ No newline at end of file diff --git a/answers/exercise1.sql b/answers/exercise1.sql index e69de29..d87ca6c 100644 --- a/answers/exercise1.sql +++ b/answers/exercise1.sql @@ -0,0 +1 @@ +ON Enrolments.StudentID=Students.StudentID; \ No newline at end of file diff --git a/answers/exercise2.sql b/answers/exercise2.sql index e69de29..f239774 100644 --- a/answers/exercise2.sql +++ b/answers/exercise2.sql @@ -0,0 +1 @@ +INNER JOIN Students \ No newline at end of file diff --git a/answers/exercise3.sql b/answers/exercise3.sql index e69de29..af3a434 100644 --- a/answers/exercise3.sql +++ b/answers/exercise3.sql @@ -0,0 +1 @@ +RIGHT JOIN Students \ No newline at end of file diff --git a/answers/exercise4.sql b/answers/exercise4.sql index e69de29..41b30b0 100644 --- a/answers/exercise4.sql +++ b/answers/exercise4.sql @@ -0,0 +1 @@ +SELECT Country,Count(*) FROM Students GROUP BY Country; \ No newline at end of file diff --git a/answers/exercise5.sql b/answers/exercise5.sql index e69de29..3c177a7 100644 --- a/answers/exercise5.sql +++ b/answers/exercise5.sql @@ -0,0 +1 @@ +SELECT Country,Count(*) FROM Students GROUP BY Country,ORDER BY Count(*) DESC; \ No newline at end of file diff --git a/answers/exercise6.sql b/answers/exercise6.sql index e69de29..5928be2 100644 --- a/answers/exercise6.sql +++ b/answers/exercise6.sql @@ -0,0 +1 @@ +SELECT Country,Count(*) FROM Students GROUP BY Country ORDER BY Count(*) DESC WHERE COUNT(*)>10; \ No newline at end of file