Oracle PL/SQL/Numeric Math Functions/CEIL — различия между версиями

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Текущая версия на 09:55, 26 мая 2010

CEIL(-5.2)

SQL> select CEIL(-5.2) from dual;
CEIL(-5.2)
----------
        -5
SQL>
SQL>



CEILING() and FLOOR()

 
SQL>
Syntax: CEIL(<numeric expression>)     FLOOR(<numeric expression>)
SQL>
SQL> SELECT
  2     CEIL(109.19)  ceil_val,
  3     FLOOR(109.19) floor_val from dual;
  CEIL_VAL  FLOOR_VAL
---------- ----------
       110        109



CEIL: Returns the ceiling value (next highest integer above a number)

SQL>
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("2","Jason",to_date("19970622","YYYYMMDD"),-12.12);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("3","Smith",to_date("19980513","YYYYMMDD"),22.1);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("4","Tailor",to_date("19990624","YYYYMMDD"),-2.12);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("5","Darlene",to_date("20000415","YYYYMMDD"),2.1);
1 row created.
SQL>
SQL>
SQL> select * from TestTable;
ID   MYNAME     MYDATE      MYNUMBER
---- ---------- --------- ----------
1    Alison     11-JUL-96      12.12
2    Jason      22-JUN-97     -12.12
3    Smith      13-MAY-98       22.1
4    Tailor     24-JUN-99      -2.12
5    Darlene    15-APR-00        2.1
SQL>
SQL>
SQL> -- CEIL: Returns the ceiling value (next highest integer above a number).
SQL>
SQL>
SQL>
SQL> select MyNumber, CEIL(MyNumber) from TestTable;
  MYNUMBER CEIL(MYNUMBER)
---------- --------------
     12.12             13
    -12.12            -12
      22.1             23
     -2.12             -2
       2.1              3
SQL>
SQL>
SQL>
SQL>
SQL>
SQL> drop table TestTable;
Table dropped.
SQL>
SQL>
SQL>



CEIL(x): Returns the smallest integer greater than or equal to x

SQL> --CEIL(x): Returns the smallest integer greater than or equal to x.
SQL>
SQL> select CEIL(5.8) from dual;
 CEIL(5.8)
----------
         6
SQL>



select ceil( 10.00000rom dual

 
SQL>
SQL>
SQL> select ceil( 10.00000000001 )  from dual;
CEIL(10.00000000001)
--------------------
                  11
1 row selected.
SQL> --



select ceil( -1.99 )from dual;

 
SQL>
SQL>  select ceil( -1.99 )from dual;
CEIL(-1.99)
-----------
         -1
1 row selected.
SQL>
SQL>
SQL>
SQL> --