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Include information on new DEFAULT and CONSTRAINT clauses.

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This commit is contained in:
Thomas G. Lockhart 1997-09-26 15:21:27 +00:00
parent 09cfab3a7f
commit 544992c3d7
2 changed files with 38 additions and 15 deletions
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14
src/man/alter_table.l
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@ -1,13 +1,17 @@
.\" This is -*-nroff-*-
.\" XXX standard disclaimer belongs here....
.\" $Header: /cvsroot/pgsql/src/man/Attic/alter_table.l,v 1.2 1996/12/11 00:26:55 momjian Exp $
.TH "ALTER TABLE" SQL 11/5/95 PostgreSQL PostgreSQL
.\" $Header: /cvsroot/pgsql/src/man/Attic/alter_table.l,v 1.3 1997/09/26 15:21:26 thomas Exp $
.TH "ALTER TABLE" SQL 09/25/97 PostgreSQL
.SH NAME
alter table \(em add attributes to a class
.SH SYNOPSIS
.nf
\fBalter table\fR classname [*]
\fBadd column\fR attname type
\fBalter table\fR classname [ * ]
\fBadd\fR [ \fBcolumn\fR ] attname type
.fi
.nf
\fBalter table\fR classname [ * ]
\fBadd\fR \fB(\fR attname type \fB)\fR
.fi
.SH DESCRIPTION
@ -18,7 +22,7 @@ causes a new attribute to be added to an existing class,
.IR classname .
The new attributes and their types are specified
in the same style and with the the same restrictions as in
.IR create table (l).
.IR "create table" (l).
.PP
In order to add an attribute to each class in an entire inheritance
hierarchy, use the

39
src/man/create_table.l
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@ -1,30 +1,32 @@
.\" This is -*-nroff-*-
.\" XXX standard disclaimer belongs here....
.\" $Header: /cvsroot/pgsql/src/man/Attic/create_table.l,v 1.5 1997/08/26 17:39:30 momjian Exp $
.TH "CREATE TABLE" SQL 11/05/95 PostgreSQL PostgreSQL
.\" $Header: /cvsroot/pgsql/src/man/Attic/create_table.l,v 1.6 1997/09/26 15:21:27 thomas Exp $
.TH "CREATE TABLE" SQL 09/25/97 PostgreSQL
.SH NAME
create table \(em create a new class
.SH SYNOPSIS
.nf
\fBcreate table \fR classname \fB(\fPattname-1 type-1 {\fB,\fP attname-i type-i}\fB)\fP
[\fBinherits\fR \fB(\fR classname-1 {\fB,\fR classname-i} \fB)\fR]
\fBcreate table\fR classname \fB(\fPattname type [\fBdefault\fP value] [\fB,\fP attname type \fBdefault\fP value]\fB)\fP
[\fBinherits\fR \fB(\fR classname [\fB,\fR classname] \fB)\fR]
[\fBconstraint\fR cname \fBcheck\fR \fB(\fR test \fB)\fR [\fB,\fR \fBcheck\fR test]
[\fBarchive\fR \fB=\fR archive_mode]
[\fBstore\fR \fB=\fR \*(lqsmgr_name\*(rq]
[\fBarch_store\fR \fB=\fR \*(lqsmgr_name\*(rq]
.fi
.SH DESCRIPTION
.BR "Create table"
.BR "Create Table"
will enter a new class into the current data base. The class will be
\*(lqowned\*(rq by the user issuing the command. The name of the
class is
.IR classname
and the attributes are as specified in the list of
.IR attname s.
The
.IR i th
attribute is created with the type specified by
.IR type "-i."
Each attribute is created with the type specified by
.IR type "."
Each type may be a simple type, a complex type (set) or an array type.
Each attribute may have a default value, specified by the
.IR default
clause which is the keyword "default" followed by a constant or expression.
.PP
Each array attribute stores arrays that must have the same number of
dimensions but may have different sizes and array index bounds. An
@ -36,6 +38,8 @@ pairs of square brackets:
.nf
att_name type[][]..[]
.fi
N.B. As of Postgres version 6.0, consistant array dimensions within an
attribute are not enforced. This will likely change in a future release.
.PP
The optional
.BR inherits
@ -50,7 +54,7 @@ Each new class
.IR classname
is automatically created as a type. Therefore, one or more instances
from the class are automatically a type and can be used in
.IR alter table(l)
.IR "alter table" (l)
or other
.BR "create table"
statements. See
@ -58,6 +62,13 @@ statements. See
for a further discussion of this point.
.PP
The optional
.BR constraint
clause specifies a list of constraints or tests which new or updated entries
must satisfy for an insert or update operation to succeed. Each constraint
must evaluate to a boolean expression. Multiple attributes may be referenced within
a single constraint.
.PP
The optional
.BR store
and
.BR arch_store
@ -119,6 +130,14 @@ create table permemp (plan char16) inherits (emp)
.fi
.nf
--
--Create class emppay with attributes name and wage with
--a default salary and constraints on wage range
--
create table emppay (name text not null, wage float4 default 10.00)
constraint empcon check (wage > 5.30 and wage <= 30.00), check (name <> '')
.fi
.nf
--
--Create class foo on magnetic disk and archive historical data
--
create table foo (bar int4) archive = heavy