Rounding Up and Down : ROUND « Numeric Math Functions « Oracle PL / SQL

1. Oracle PL / SQL
2. Numeric Math Functions
3. ROUND

Rounding Up and Down

 
SQL>
SQL> CREATE TABLE SAT (
  2     StudentID  INT NOT NULL,
  3     ExamID     INT NOT NULL,
  4     Mark       INT,
  5     IfPassed   SMALLINT,
  6     Comments   VARCHAR(255),
  7     CONSTRAINT PK_SAT PRIMARY KEY (StudentID, ExamID));

Table created.

SQL>
SQL>
SQL> INSERT INTO SAT (StudentID,ExamID,Mark,IfPassed,Comments) VALUES (1,1,55,1,'Satisfactory');

1 row created.

SQL> INSERT INTO SAT (StudentID,ExamID,Mark,IfPassed,Comments) VALUES (1,2,73,1,'Good result');

1 row created.

SQL> INSERT INTO SAT (StudentID,ExamID,Mark,IfPassed,Comments) VALUES (2,3,44,1,'Hard');

1 row created.

SQL> INSERT INTO SAT (StudentID,ExamID,Mark,IfPassed,Comments) VALUES (2,5,39,0,'Simple');

1 row created.

SQL> INSERT INTO SAT (StudentID,ExamID,Mark,IfPassed) VALUES (2,6,63,1);

1 row created.

SQL>
SQL>
SQL> SELECT StudentID, AVG(CAST(Mark AS FLOAT)) AS AverageMark,
  2         FLOOR(AVG(CAST(Mark AS FLOAT))) AS RoundDown,
  3         CEIL(AVG(CAST(Mark AS FLOAT))) AS RoundUp,
  4         ROUND(AVG(CAST(Mark AS FLOAT)), 0) AS ClosestInt
  5  FROM SAT
  6  GROUP BY StudentID;

 STUDENTID AVERAGEMARK  ROUNDDOWN    ROUNDUP CLOSESTINT
---------- ----------- ---------- ---------- ----------
         1          64         64         64         64
         2  48.6666667         48         49         49

2 rows selected.

SQL>
SQL>
SQL>
SQL> drop table SAT;

Table dropped.

   
  

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