в 13:44, 26 мая 2010

2010-05-26T13:44:56Z

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2010-05-26T09:49:49Z

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== Ceiling a column==



<source lang="sql">
mysql>
mysql>
mysql> create table myTable(
-> id int(2),
-> value FLOAT(6,2)
-> );
Query OK, 0 rows affected (0.03 sec)
mysql>
mysql> insert into myTable(ID, value)values (1,9);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (2,2.11);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (3,3.44);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (4,-4.21);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (5,10);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (6,3);
Query OK, 1 row affected (0.01 sec)
mysql> insert into myTable(ID, value)values (7,-5.88);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (8,123.45);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (9,98.23);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (10,938.23);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (11,-984.23);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (12,198.23);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (13,-928.87);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (14,25.37);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (15,-918.3);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (16,9.23);
Query OK, 1 row affected (0.00 sec)
mysql> insert into myTable(ID, value)values (17,-8.23);
Query OK, 1 row affected (0.01 sec)
mysql>
mysql> select * from myTable;
+------+---------+
| id | value |
+------+---------+
| 1 | 9.00 |
| 2 | 2.11 |
| 3 | 3.44 |
| 4 | -4.21 |
| 5 | 10.00 |
| 6 | 3.00 |
| 7 | -5.88 |
| 8 | 123.45 |
| 9 | 98.23 |
| 10 | 938.23 |
| 11 | -984.23 |
| 12 | 198.23 |
| 13 | -928.87 |
| 14 | 25.37 |
| 15 | -918.30 |
| 16 | 9.23 |
| 17 | -8.23 |
+------+---------+
17 rows in set (0.00 sec)
mysql>
mysql>
mysql>
mysql> select value, ceiling(value) from myTable;
+---------+----------------+
| value | ceiling(value) |
+---------+----------------+
| 9.00 | 9 |
| 2.11 | 3 |
| 3.44 | 4 |
| -4.21 | -4 |
| 10.00 | 10 |
| 3.00 | 3 |
| -5.88 | -5 |
| 123.45 | 124 |
| 98.23 | 99 |
| 938.23 | 939 |
| -984.23 | -984 |
| 198.23 | 199 |
| -928.87 | -928 |
| 25.37 | 26 |
| -918.30 | -918 |
| 9.23 | 10 |
| -8.23 | -8 |
+---------+----------------+
17 rows in set (0.00 sec)
mysql>
mysql>
mysql>
mysql>
mysql> drop table myTable;
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql>
mysql>
mysql></source>

== CEILING(X), CEIL(X) returns the smallest integer value not less than X.==



<source lang="sql">
mysql>
mysql>
mysql> SELECT CEILING(1.23);
+---------------+
| CEILING(1.23) |
+---------------+
| 2 |
+---------------+
1 row in set (0.00 sec)
mysql>
mysql> SELECT CEIL(-1.23);
+-------------+
| CEIL(-1.23) |
+-------------+
| -1 |
+-------------+
1 row in set (0.00 sec)</source>

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MySQL Tutorial/Math Numeric Functions/CEILING - История изменений

в 13:44, 26 мая 2010

Admin: 1 версия