Change a user's valid until date, specifying that his
- authorisation should expire at midday on 4th May 1998 using
+ authorization should expire at midday on 4th May 1998 using
the time zone which is one hour ahead of UTC:
ALTER USER chris VALID UNTIL 'May 4 12:00:00 1998 +1';
In other words, as the class is updated, the changes are
not clustered. No attempt is made to keep new instances or
updated tuples clustered. If one wishes, one can
- recluster manually by issuing the command again.
+ re-cluster manually by issuing the command again.
attributes
- Contraint attributes.
+ Constraint attributes.
LANGUAGE 'c';
- The C decalaration of the function is:
+ The C declaration of the function is:
Point * complex_to_point (Complex *z)
Define a UNIQUE table constraint for the table distributors:
CREATE TABLE distributors (
- did DECIMAL(03),
+ did DECIMAL(3),
name VARCHAR(40),
UNIQUE(name)
);
CREATE TABLE distributors (
- did DECIMAL(03) PRIMARY KEY DEFAULT NEXTVAL('serial'),
+ did DECIMAL(3) PRIMARY KEY DEFAULT NEXTVAL('serial'),
name VARCHAR(40) NOT NULL CHECK (name <> '')
);
CREATE TABLE films (
code CHAR(5),
title VARCHAR(40),
- did DECIMAL(03),
+ did DECIMAL(3),
date_prod DATE,
kind CHAR(10),
len INTERVAL HOUR TO MINUTE,
CREATE TABLE films (
- code CHAR(05),
+ code CHAR(5),
title VARCHAR(40),
- did DECIMAL(03),
+ did DECIMAL(3),
date_prod DATE,
kind CHAR(10),
len INTERVAL HOUR TO MINUTE,
CREATE TABLE distributors (
- did DECIMAL(03),
+ did DECIMAL(3),
name CHAR VARYING(40),
PRIMARY KEY(did)
);
CREATE TABLE distributors (
- did DECIMAL(03) PRIMARY KEY,
+ did DECIMAL(3) PRIMARY KEY,
name VARCHAR(40)
);
CREATE TEMPORARY TABLE actors (
- id DECIMAL(03),
+ id DECIMAL(3),
name VARCHAR(40),
CONSTRAINT actor_id CHECK (id < 150)
) ON COMMIT DELETE ROWS;
Refer to CREATE TYPE for
- inforamation on how to create types.
+ information on how to create types.
It is the user's responsibility to remove any operators,
-
SQL92 allows one to repet
atively retrieve the cursor
+
SQL92 allows one to repet
itively retrieve the cursor
at its "current position" using the syntax
FETCH RELATIVE 0 FROM cursor
For example, an application runs a transaction at READ COMMITTED isolation
- level and needs to ensure the existance of data in a table for the
+ level and needs to ensure the existence of data in a table for the
duration of the
transaction. To achieve this you could use SHARE lock mode over the
table before querying. This will protect data from concurrent changes
Immediate mode sends SIGUSR1
to the backends and lets them abort. In this case, database recovery
- will be neccessary on the next startup.
+ will be necessary on the next startup.
boolean_expr
can consist of any expression which evaluates to a boolean value.
- In many cases, this expression will be
+ In many cases, this expression will be:
expr cond_op expr