в 13:45, 26 мая 2010

2010-05-26T13:45:56Z

Admin: 1 версия

2010-05-26T10:14:11Z

1 версия

Новая страница

==Fill the columns from the left with as many values as are given, and the rest will be defaulted==



<source lang="sql">

postgres=#
postgres=#
postgres=# CREATE TABLE products (
postgres(# product_no integer,
postgres(# name text,
postgres(# price numeric
postgres(# );
CREATE TABLE
postgres=# -- Fill the columns from the left with as many values as are given, and the rest will be defaulted.
postgres=# INSERT INTO products VALUES (1, "Cheese");
INSERT 0 1
postgres=#
postgres=#
postgres=# select * from products;
product_no | name | price
------------+--------+-------
1 | Cheese |
(1 row)
postgres=#
postgres=# drop table products;
DROP TABLE
postgres=#
postgres=#
postgres=#

</source>

==Insert date data to table==



<source lang="sql">

postgres=#
postgres=# CREATE TABLE weather (
postgres(# city varchar(80),
postgres(# temp_lo int, -- low temperature
postgres(# temp_hi int, -- high temperature
postgres(# prcp real, -- precipitation
postgres(# date date
postgres(# );
CREATE TABLE
postgres=#
postgres=#
postgres=# INSERT INTO weather (city, temp_lo, temp_hi, prcp, date)
postgres-# VALUES ("San Francisco", 43, 57, 0.0, "1994-11-29");
INSERT 0 1
postgres=#
postgres=# INSERT INTO weather (date, city, temp_hi, temp_lo)
postgres-# VALUES ("1994-11-29", "Hayward", 54, 37);
INSERT 0 1
postgres=#
postgres=#
postgres=# drop table weather;
DROP TABLE
postgres=#

</source>

==Insert only an ID: only one column==



<source lang="sql">

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=# -- Insert only an ID
postgres=#
postgres=# INSERT INTO employee (id) VALUES (108);
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
108 | | | | |
(10 rows)
postgres=#
postgres=# drop table employee;
DROP TABLE
postgres=#
postgres=#

</source>

==Inserts a single row into the employees table==



<source lang="sql">
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=# -- Inserts a single row into the employees table:
postgres=#
postgres=# insert into employee (ID, name, salary, start_date, city, region)
postgres-# values (99, "M", 20, "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
99 | M | 20 | 2002-06-09 | Toronto | W
(10 rows)
postgres=#
postgres=# drop table employee;
DROP TABLE
postgres=#
postgres=#

</source>

==List the columns explicitly==



<source lang="sql">
postgres=# CREATE TABLE products (
postgres(# product_no integer,
postgres(# name text,
postgres(# price numeric
postgres(# );
CREATE TABLE
postgres=# -- List the columns explicitly
postgres=#
postgres=# INSERT INTO products (product_no, name, price) VALUES (1, "Cheese", 9.99);
INSERT 0 1
postgres=# INSERT INTO products (name, price, product_no) VALUES ("Cheese", 9.99, 1);
INSERT 0 1
postgres=#
postgres=#
postgres=# select * from products;
product_no | name | price
------------+--------+-------
1 | Cheese | 9.99
1 | Cheese | 9.99
(2 rows)
postgres=#
postgres=# drop table products;
DROP TABLE
postgres=#
postgres=#
postgres=#

</source>

==Omit values==



<source lang="sql">

postgres=#
postgres=#
postgres=# CREATE TABLE products (
postgres(# product_no integer,
postgres(# name text,
postgres(# price numeric
postgres(# );
CREATE TABLE
postgres=# -- Omit values
postgres=#
postgres=# INSERT INTO products (product_no, name) VALUES (1, "Cheese");
INSERT 0 1
postgres=#
postgres=#
postgres=# select * from products;
product_no | name | price
------------+--------+-------
1 | Cheese |
(1 row)
postgres=#
postgres=# drop table products;
DROP TABLE
postgres=#
postgres=#
postgres=#
postgres=#

</source>

==Request default values explicitly, for individual columns==



<source lang="sql">

postgres=#
postgres=#
postgres=# CREATE TABLE products (
postgres(# product_no integer,
postgres(# name text,
postgres(# price numeric
postgres(# );
CREATE TABLE
postgres=# -- Request default values explicitly, for individual columns
postgres=# INSERT INTO products (product_no, name, price) VALUES (1, "Cheese", DEFAULT);
INSERT 0 1
postgres=#
postgres=#
postgres=# select * from products;
product_no | name | price
------------+--------+-------
1 | Cheese |
(1 row)
postgres=#
postgres=# drop table products;
DROP TABLE
postgres=#
postgres=#
postgres=#

</source>

==Request default values explicitly for the entire row==



<source lang="sql">

postgres=# CREATE TABLE products (
postgres(# product_no integer,
postgres(# name text,
postgres(# price numeric
postgres(# );
CREATE TABLE
postgres=# -- Request default values explicitly for the entire row:
postgres=# INSERT INTO products DEFAULT VALUES;
INSERT 0 1
postgres=#
postgres=#
postgres=# select * from products;
product_no | name | price
------------+------+-------
| |
(1 row)
postgres=#
postgres=# drop table products;
DROP TABLE
postgres=#
postgres=#

</source>

==The data values are listed in the order in which the columns appear in the table, separated by commas==



<source lang="sql">
postgres=#
postgres=# -- Inserting Data
postgres=#
postgres=# -- The data values are listed in the order in which the columns appear in the table, separated by commas.
postgres=#
postgres=# CREATE TABLE products (
postgres(# product_no integer,
postgres(# name text,
postgres(# price numeric
postgres(# );
CREATE TABLE
postgres=# INSERT INTO products VALUES (1, "Cheese", 9.99);
INSERT 0 1
postgres=#
postgres=# select * from products;
product_no | name | price
------------+--------+-------
1 | Cheese | 9.99
(1 row)
postgres=#
postgres=# drop table products;
DROP TABLE
postgres=#

</source>

← Предыдущая	Версия 13:45, 26 мая 2010
(нет различий)

PostgreSQL/Insert Delete Update/Insert - История изменений

в 13:45, 26 мая 2010

Admin: 1 версия