SELECT Statements. Lecture Notes Sree Nilakanta Fall 2010 (rev). SELECT Statements. Retrieve data from one or more tables, object tables, views, object views, or snapshots Must have SELECT privilege Examples. Examples.
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Fall 2010 (rev)
SELECT a.deptno "Department", a.num_emp/b.total_count "%Employees", a.sal_sum/b.total_sal "%Salary”FROM(SELECT deptno, COUNT(*) num_emp, SUM(SAL) sal_sumFROM scott.empGROUP BY deptno) a,(SELECT COUNT(*) total_count, SUM(sal) total_salFROM scott.emp) b ;