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INSERT()
NAME
INSERT - create new rows in a table
SYNOPSIS
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 SELECT
[select(5)].
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Index for Section 5 |
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Alphabetical listing for I |
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