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7cd15c47
编写于
10月 01, 1997
作者:
T
Thomas G. Lockhart
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差异文件
Document NOT NULL for table creation.
Clarify usage of date_part() for timespan data type.
上级
dec1889a
变更
2
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2 changed file
with
9 addition
and
8 deletion
+9
-8
src/man/create_table.l
src/man/create_table.l
+5
-4
src/man/pgbuiltin.3
src/man/pgbuiltin.3
+4
-4
未找到文件。
src/man/create_table.l
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7cd15c47
.\" This is -*-nroff-*-
.\" XXX standard disclaimer belongs here....
.\" $Header: /cvsroot/pgsql/src/man/Attic/create_table.l,v 1.
8 1997/09/27 03:58:29 momjian
Exp $
.\" $Header: /cvsroot/pgsql/src/man/Attic/create_table.l,v 1.
9 1997/10/01 17:05:13 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 type [\fBdefault\fP value]
[\fB,\fP attname type [\fBdefault\fP value] ]\fB )\fP
\fBcreate table\fR classname \fB(\fPattname type [
not null] [
\fBdefault\fP value]
[\fB,\fP attname type [\fB
not null\fP] [\fB
default\fP value] ]\fB )\fP
[\fBinherits\fR \fB(\fR classname [\fB,\fR classname] \fB)\fR]
[\fBconstraint\fR cname \fBcheck\fR \fB(\fR test \fB)\fR [, \fBcheck\fR \fB(\fR test \fB)\fR ] ]
[\fBarchive\fR \fB=\fR archive_mode]
...
...
@@ -25,7 +25,8 @@ and the attributes are as specified in the list of
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
Each attribute may be specified to be non-null and
each may have a default value, specified by the
.IR default
clause which is the keyword "default" followed by a constant or expression.
.PP
...
...
src/man/pgbuiltin.3
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7cd15c47
.\" This is -*-nroff-*-
.\" XXX standard disclaimer belongs here....
.\" $Header: /cvsroot/pgsql/src/man/Attic/pgbuiltin.3,v 1.
5 1997/09/27 04:37:33
thomas Exp $
.\" $Header: /cvsroot/pgsql/src/man/Attic/pgbuiltin.3,v 1.
6 1997/10/01 17:05:16
thomas Exp $
.TH PGBUILTIN INTRO 04/01/97 PostgreSQL PostgreSQL
.SH "DESCRIPTION"
This section describes the data types, functions and operators
...
...
@@ -592,9 +592,9 @@ functions, arguments can be
`year', `month', `day', `hour', `minute', and `second',
as well as the more specialized quantities
`decade', `century', `millenium', `millisecond', and `microsecond'.
date_part() al
so allows
`dow'
to return day of week and `epoch' to return seconds since 1970
.
date_part() al
lows `dow'
to return day of week and `epoch' to return seconds since 1970 for datetime
and 'epoch' to return total elapsed seconds for timespan
.
.nf
Functions:
...
...
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