Oracle PL/SQL Tutorial/Numerical Math Functions/CEIL — различия между версиями

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Текущая версия на 10:08, 26 мая 2010

CEIL(-5.2)

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


CEIL(5.8)

SQL> select CEIL(5.8) from dual;
 CEIL(5.8)
----------
         6


CEIL for negative value

SQL>
SQL>
SQL> -- create demo table
SQL> create table myTable(
  2    id           NUMBER(2),
  3    value        NUMBER(6,2)
  4  )
  5  /
Table created.
SQL>
SQL> -- prepare data
SQL> insert into myTable(ID,  value)values (1,9)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (2,2.11)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (3,3.44)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (4,-4.21)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (5,10)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (6,3)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (7,-5.88)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (8,123.45)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (9,98.23)
  2  /
1 row created.
SQL>
SQL> select * from myTable
  2  /
        ID      VALUE
---------- ----------
         1          9
         2       2.11
         3       3.44
         4      -4.21
         5         10
         6          3
         7      -5.88
         8     123.45
         9      98.23
9 rows selected.
SQL>
SQL>
SQL> SELECT id, value,CEIL(value) FROM myTable
  2  /
        ID      VALUE CEIL(VALUE)
---------- ---------- -----------
         1          9           9
         2       2.11           3
         3       3.44           4
         4      -4.21          -4
         5         10          10
         6          3           3
         7      -5.88          -5
         8     123.45         124
         9      98.23          99
9 rows selected.
SQL>
SQL>
SQL>
SQL> -- clean the table
SQL> drop table myTable
  2  /
Table dropped.
SQL>
SQL>


CEIL(x) gets the smallest integer greater than or equal to x.

The following example uses CEIL() to display the absolute value of 5.8 and -5.2, respectively:



SQL> SELECT CEIL(5.8), CEIL(-5.2) FROM dual;
 CEIL(5.8) CEIL(-5.2)
---------- ----------
         6         -5


Use CEIL function to get the ceiling value

SQL>
SQL>
SQL> -- create demo table
SQL> create table myTable(
  2    id           NUMBER(2),
  3    value        NUMBER(6,2)
  4  )
  5  /
Table created.
SQL>
SQL> -- prepare data
SQL> insert into myTable(ID,  value)values (1,9)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (2,2.11)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (3,3.44)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (4,-4.21)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (5,10)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (6,3)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (7,-5.88)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (8,123.45)
  2  /
1 row created.
SQL> insert into myTable(ID,  value)values (9,98.23)
  2  /
1 row created.
SQL>
SQL> select * from myTable
  2  /
        ID      VALUE
---------- ----------
         1          9
         2       2.11
         3       3.44
         4      -4.21
         5         10
         6          3
         7      -5.88
         8     123.45
         9      98.23
9 rows selected.
SQL>
SQL> SELECT id, value,CEIL(value) FROM myTable
  2  /
        ID      VALUE CEIL(VALUE)
---------- ---------- -----------
         1          9           9
         2       2.11           3
         3       3.44           4
         4      -4.21          -4
         5         10          10
         6          3           3
         7      -5.88          -5
         8     123.45         124
         9      98.23          99
9 rows selected.
SQL>
SQL>
SQL> -- clean the table
SQL> drop table myTable
  2  /
Table dropped.
SQL>
SQL>