01 02

.vscode/settings.json

@@ -18,7 +18,6 @@
   "screencastMode.onlyKeyboardShortcuts": true,
   "terminal.integrated.fontSize": 18,
   "window.zoomLevel": 3,
-  "workbench.activityBar.visible": true,
   "workbench.colorTheme": "Visual Studio Dark",
   "workbench.fontAliasing": "antialiased",
   "workbench.statusBar.visible": true

queries/01_02/ComparisonConditions.sql

@@ -1,6 +1,6 @@
 SELECT empno, name,hiredate 
 FROM emp_tab 
-WHERE name LIKE '_D%'; 
+WHERE name LIKE '_D%' or name LIKE 'K%'; 
 
 SELECT * FROM emp_tab 
 WHERE deptno IN (30,40);
@@ -9,4 +9,6 @@ SELECT * FROM emp_tab
 WHERE salary BETWEEN 2000 AND 6000;
 
 SELECT empno FROM emp_tab 
-WHERE manager IS NULL;
+WHERE manager IS NULL;
+
+SELECT * FROM emp_tab

queries/01_02/LogicalConditions.sql

@@ -1,8 +1,21 @@
 SELECT * FROM emp_tab 
 WHERE name LIKE 'S%' AND deptno=30;
 
+SELECT * FROM (
+    SELECT * FROM emp_tab WHERE name LIKE 'S%'
+) AS 'Test of S';
+
+
 SELECT * FROM emp_tab 
 WHERE name LIKE 'S%' OR deptno=30;
 
 SELECT * FROM emp_tab 
-WHERE deptno NOT IN(30,40);
+WHERE deptno NOT IN(30,40);
+
+SELECT * FROM emp_tab
+WHERE NOT(NOT(deptno > 35))
+
+SELECT name 'Name', CONCAT('$', salary*12) 'Salary' FROM emp_tab
+WHERE salary*12 < 50000
+
+-- SELECT CONCAT('$', FORMAT(salary, 2)) 'Salary' FROM emp_tab;

queries/01_02/ORDERBY.sql

@@ -1,5 +1,24 @@
-SELECT * FROM emp_tab 
-WHERE deptno=30 ORDER BY salary;
+SELECT name 'Name', deptno 'Dept #',
+CONCAT('$',salary*12) 'Annual Salary' FROM emp_tab 
+WHERE deptno=30 ORDER BY salary DESC;
 
-SELECT * FROM emp_tab 
-ORDER BY deptno,salary DESC;
+SELECT name 'Name', job 'Job', deptno 'Dept #',
+commission 'Commision', CONCAT('$', salary*12) 
+AS Salary FROM emp_tab 
+ORDER BY deptno DESC,commission DESC, Salary DESC;
+
+SELECT * FROM emp_tab;
+
+SELECT
+  name 'Name',
+  job 'Job',
+  deptno 'Dept #'
+FROM emp_tab
+WHERE NOT deptno=70 AND NOT name='FORD'
+AND NOT job='CLERK'
+ORDER BY name;
+
+SELECT *
+FROM emp_tab
+WHERE NOT deptno=70 AND NOT name='FORD'
+ORDER BY name;

queries/01_02/OrderOfPrecedence.sql

@@ -1,9 +1,9 @@
 SELECT empno,name,deptno,salary 
 FROM emp_tab 
-WHERE deptno=30 OR deptno=40 
-AND salary>2500;
+WHERE deptno=40 OR deptno=30 
+AND salary BETWEEN 2500 AND 4900;
 
 SELECT empno,name,deptno,salary 
 FROM emp_tab 
 WHERE (deptno=30 OR deptno=40) 
-AND salary>2500;
+AND salary BETWEEN 2500 AND 4900;

queries/01_02/WHEREcondition.sql

@@ -4,4 +4,8 @@ WHERE salary>2500;
 
 SELECT empno,name, salary 
 FROM emp_tab 
-WHERE name='KING';
+WHERE name='KING';
+
+SELECT *
+FROM emp_tab
+