INSERT
SQL - Language Statements
INSERT
create new rows in a table
INSERT
INSERT INTO table [ ( column [, ...] ) ]
{ DEFAULT VALUES | VALUES ( { expression | DEFAULT } [, ...] ) | query }
Description
INSERT inserts new rows into a table.
One can insert a single row specified by value expressions,
or several rows as a result of a query.
The target column names may be listed in any order. If no list of
column names is given at all, the default is all the columns of the
table in their declared order; or the first N> column
names, if there are only N> columns supplied by the
VALUES> clause or query>. The values
supplied by the VALUES> clause or query> are
associated with the explicit or implicit column list left-to-right.
Each column not present in the explicit or implicit column list will be
filled with a default value, either its declared default value
or null if there is none.
If the expression for any column is not of the correct data type,
automatic type conversion will be attempted.
You must have INSERT privilege to a table in
order to insert into it. If you use the query clause to insert rows from a
query, you also need to have SELECT privilege on
any table used in the query.
Parameters
table
The name (optionally schema-qualified) of an existing table.
column
The name of a column in table.
The column name can be qualified with a subfield name or array
subscript, if needed. (Inserting into only some fields of a
composite column leaves the other fields null.)
DEFAULT VALUES
All columns will be filled with their default values.
expression
An expression or value to assign to the corresponding column.
DEFAULT
The corresponding column will be filled with
its default value.
query
A query (SELECT statement) that supplies the
rows to be inserted. Refer to the SELECT
statement for a description of the syntax.
Outputs
On successful completion, an INSERT> command returns a command
tag of the form
INSERT oid count
The count is the number
of rows inserted. If count
is exactly one, and the target table has OIDs, then
oid is the
OID assigned to the inserted row. Otherwise
oid is zero.
Examples
Insert a single row into table films:
INSERT INTO films VALUES
('UA502', 'Bananas', 105, '1971-07-13', 'Comedy', '82 minutes');
In this example, the len column is
omitted and therefore it will have the default value:
INSERT INTO films (code, title, did, date_prod, kind)
VALUES ('T_601', 'Yojimbo', 106, '1961-06-16', 'Drama');
This example uses the DEFAULT clause for
the date columns rather than specifying a value:
INSERT INTO films VALUES
('UA502', 'Bananas', 105, DEFAULT, 'Comedy', '82 minutes');
INSERT INTO films (code, title, did, date_prod, kind)
VALUES ('T_601', 'Yojimbo', 106, DEFAULT, 'Drama');
To insert a row consisting entirely of default values:
INSERT INTO films DEFAULT VALUES;
This example inserts some rows into table
films from a table tmp_films
with the same column layout as films:
INSERT INTO films SELECT * FROM tmp_films WHERE date_prod < '2004-05-07';
This example inserts into array columns:
-- Create an empty 3x3 gameboard for noughts-and-crosses
-- (these commands create the same board)
INSERT INTO tictactoe (game, board[1:3][1:3])
VALUES (1,'{{"","",""},{"","",""},{"","",""}}');
INSERT INTO tictactoe (game, board)
VALUES (2,'{{,,},{,,},{,,}}');
Compatibility
INSERT conforms to the SQL standard. The case in
which a column name list is omitted, but not all the columns are
filled from the VALUES> clause or query>,
is disallowed by the standard.
Possible limitations of the query clause are documented under
.