Oracle PL/SQL/Numeric Math Functions/POWER

POWER(100,0.5): square root

  
SQL>
SQL> SELECT
  2  POWER(100, 1)  power_1,
  3  POWER(100,0.5) square_root,
  4  POWER(100,-2)  one_ten_thousandth from dual;
   POWER_1 SQUARE_ROOT ONE_TEN_THOUSANDTH
---------- ----------- ------------------
       100          10              .0001

POWER(2, 3)

 
SQL> select POWER(2, 3) from dual;
POWER(2,3)
----------
         8
SQL>

POWER(2,3) POWER(-OD(OD(13,0)

 
SQL>
SQL> select power(2,3), power(-2,3)
  2  ,        mod(8,3),   mod(13,0)
  3  from   dual;
POWER(2,3) POWER(-2,3)   MOD(8,3)  MOD(13,0)
---------- ----------- ---------- ----------
         8          -8          2         13
SQL>

POWER: Returns value raised to some exponential power

 

SQL>
SQL> -- create demo table
SQL> create table TestTable(
  2    ID                 VARCHAR2(4 BYTE)         NOT NULL,
  3    MyName             VARCHAR2(10 BYTE),
  4    MyDate             DATE,
  5    MyNumber           Number(8,2)
  6  )
  7  /
Table created.
SQL>
SQL>
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19960711","YYYYMMDD"),12.12);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19970622","YYYYMMDD"),-12.12);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19980513","YYYYMMDD"),22.1);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19990624","YYYYMMDD"),-2.12);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("20000415","YYYYMMDD"),2.1);
1 row created.
SQL>
SQL>
SQL> select * from TestTable
  2
SQL>
SQL> --POWER: Returns value raised to some exponential power
SQL>
SQL>
SQL> SELECT POWER(MyNumber,2) FROM TestTable;
POWER(MYNUMBER,2)
-----------------
         146.8944
         146.8944
           488.41
           4.4944
             4.41
SQL>
SQL> drop table TestTable;
Table dropped.
SQL>

POWER(x, y): Returns the result of x raised to the power y

 
SQL> --POWER(x, y): Returns the result of x raised to the power y.
SQL>
SQL> select POWER(2, 1) from dual;
POWER(2,1)
----------
         2
SQL>

select power(7 ) "With Reals"

  
SQL>
SQL>
SQL>  select power( 5.2, 2.7 ) "With Reals"
  2      from dual
  3    /
With Reals
----------
85.7450441
1 row selected.
SQL>
SQL> --

select power( "Using Negatives"

  
SQL>
SQL>
SQL>  select power( -5, 3 ) "Using Negatives"
  2      from dual
  3    /
Using Negatives
---------------
           -125
1 row selected.
SQL> --