PostgreSQL/String Functions/to char — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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(нет различий)
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Версия 13:45, 26 мая 2010
Содержание
If space is not enough for display
postgres=#
postgres=# CREATE TABLE employee (
postgres(# ID int,
postgres(# name varchar(10),
postgres(# salary real,
postgres(# start_date date,
postgres(# city varchar(10),
postgres(# region char(1)
postgres(# );
CREATE TABLE
postgres=#
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (1, "Jason", 40420, "02/01/94", "New York", "W");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (2, "Robert",14420, "01/02/95", "Vancouver","N");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (3, "Celia", 24020, "12/03/96", "Toronto", "W");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (4, "Linda", 40620, "11/04/97", "New York", "N");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (5, "David", 80026, "10/05/98", "Vancouver","W");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (6, "James", 70060, "09/06/99", "Toronto", "N");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (7, "Alison",90620, "08/07/00", "New York", "W");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (8, "Chris", 26020, "07/08/01", "Vancouver","N");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (9, "Mary", 60020, "06/09/02", "Toronto", "W");
INSERT 0 1
postgres=#
postgres=# select * from employee;
id | name | salary | start_date | city | region
----+--------+--------+------------+-----------+--------
1 | Jason | 40420 | 1994-02-01 | New York | W
2 | Robert | 14420 | 1995-01-02 | Vancouver | N
3 | Celia | 24020 | 1996-12-03 | Toronto | W
4 | Linda | 40620 | 1997-11-04 | New York | N
5 | David | 80026 | 1998-10-05 | Vancouver | W
6 | James | 70060 | 1999-09-06 | Toronto | N
7 | Alison | 90620 | 2000-08-07 | New York | W
8 | Chris | 26020 | 2001-07-08 | Vancouver | N
9 | Mary | 60020 | 2002-06-09 | Toronto | W
(9 rows)
postgres=#
postgres=# SELECT salary * 100 AS New_Salary,
postgres-# to_char(salary * 100, "$99,999.99") AS monetary,
postgres-# translate(to_char(salary * 100, "$9,999.99")," ","") AS translated
postgres-# FROM employee
postgres-# LIMIT 3;
new_salary | monetary | translated
------------+-------------+------------
4042000 | $ ##,###.## | $#,###.##
1442000 | $ ##,###.## | $#,###.##
2402000 | $ ##,###.## | $#,###.##
(3 rows)
postgres=#
postgres=# drop table employee;
DROP TABLE
postgres=#
to_char(1.0, "9th "Place"")
postgres=# SELECT to_char(1.0, "9th "Place"") AS first,
postgres-# to_char(2.2, "9th "Place"") AS second,
postgres-# to_char(pi(), "9th "Place"") AS third,
postgres-# to_char(10, "99V99th "\\"Place\\""") AS shifted_up;
first | second | third | shifted_up
------------+------------+------------+-----------------
1st Place | 2nd Place | 3rd Place | 990th "Place"
(1 row)
postgres=#
to_char(123456789, "00999999999")
postgres=# SELECT to_char(123456789, "999G999G999D99") AS formatted,
postgres-# to_char(123456789, "999999999") AS just_digits,
postgres-# to_char(123456789, "00999999999") AS with_zeroes;
formatted | just_digits | with_zeroes
-----------------+-------------+--------------
123,456,789.00 | 123456789 | 00123456789
(1 row)
postgres=#
postgres=#
to_char(123456789, "999999999")
postgres=# SELECT to_char(123456789, "999G999G999D99") AS formatted,
postgres-# to_char(123456789, "999999999") AS just_digits,
postgres-# to_char(123456789, "00999999999") AS with_zeroes;
formatted | just_digits | with_zeroes
-----------------+-------------+--------------
123,456,789.00 | 123456789 | 00123456789
(1 row)
postgres=#
postgres=#
to_char(123456789, "999G999G999D99")
postgres=# SELECT to_char(123456789, "999G999G999D99") AS formatted,
postgres-# to_char(123456789, "999999999") AS just_digits,
postgres-# to_char(123456789, "00999999999") AS with_zeroes;
formatted | just_digits | with_zeroes
-----------------+-------------+--------------
123,456,789.00 | 123456789 | 00123456789
(1 row)
postgres=#
postgres=#
to_char: convert number to char
postgres=#
postgres=#
postgres=# CREATE TABLE money_example (
postgres(# money_cash money,
postgres(# numeric_cash numeric(10,2));
CREATE TABLE
postgres=#
postgres=# INSERT INTO money_example VALUES ("$12.24", 12.24);
INSERT 0 1
postgres=#
postgres=#
postgres=# SELECT money_cash, "$" || ltrim(to_char(numeric_cash, "9999.99"))
postgres-# AS numeric_cashified
postgres-# FROM money_example;
money_cash | numeric_cashified
------------+-------------------
$12.24 | $12.24
(1 row)
postgres=#
postgres=# drop table money_example;
DROP TABLE
postgres=#
to_char(start_date, "YYYY-MM-DD HH24:MI:SS")
postgres=#
postgres=#
postgres=#
postgres=# CREATE TABLE employee (
postgres(# ID int,
postgres(# name varchar(10),
postgres(# salary real,
postgres(# start_date date,
postgres(# city varchar(10),
postgres(# region char(1)
postgres(# );
CREATE TABLE
postgres=#
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (1, "Jason", 40420, "02/01/94", "New York", "W");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (2, "Robert",14420, "01/02/95", "Vancouver","N");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (3, "Celia", 24020, "12/03/96", "Toronto", "W");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (4, "Linda", 40620, "11/04/97", "New York", "N");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (5, "David", 80026, "10/05/98", "Vancouver","W");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (6, "James", 70060, "09/06/99", "Toronto", "N");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (7, "Alison",90620, "08/07/00", "New York", "W");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (8, "Chris", 26020, "07/08/01", "Vancouver","N");
INSERT 0 1
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (9, "Mary", 60020, "06/09/02", "Toronto", "W");
INSERT 0 1
postgres=#
postgres=# select * from employee;
id | name | salary | start_date | city | region
----+--------+--------+------------+-----------+--------
1 | Jason | 40420 | 01.02.1994 | New York | W
2 | Robert | 14420 | 02.01.1995 | Vancouver | N
3 | Celia | 24020 | 03.12.1996 | Toronto | W
4 | Linda | 40620 | 04.11.1997 | New York | N
5 | David | 80026 | 05.10.1998 | Vancouver | W
6 | James | 70060 | 06.09.1999 | Toronto | N
7 | Alison | 90620 | 07.08.2000 | New York | W
8 | Chris | 26020 | 08.07.2001 | Vancouver | N
9 | Mary | 60020 | 09.06.2002 | Toronto | W
(9 rows)
postgres=#
postgres=#
postgres=# SELECT to_char(start_date, "YYYY-MM-DD HH24:MI:SS") AS value FROM employee;
value
---------------------
1994-02-01 00:00:00
1995-01-02 00:00:00
1996-12-03 00:00:00
1997-11-04 00:00:00
1998-10-05 00:00:00
1999-09-06 00:00:00
2000-08-07 00:00:00
2001-07-08 00:00:00
2002-06-09 00:00:00
(9 rows)
postgres=#
postgres=#
postgres=# drop table employee;
DROP TABLE
postgres=#