blob: f5955dda86d8bbf38f2224af0bc2490e47bd6edf (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
<refentry id="SQL-CREATENODEGROUP">
<indexterm zone="sql-createnodegroup">
<primary>CREATE NODE GROUP</primary>
</indexterm>
<refmeta>
<refentrytitle>CREATE NODE GROUP</refentrytitle>
<manvolnum>7</manvolnum>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>CREATE NODE GROUP</refname>
<refpurpose>create a group of cluster nodes</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>
CREATE NODE GROUP <replaceable class="parameter">groupname</replaceable>
WITH ( <replaceable class="parameter">nodename</replaceable> [, ... ] )
</synopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>CREATE NODE GROUP</command> is a SQL command specific
to <productname>Postgres-XL</productname> that creates
node group information in catalog table pgxc_group.
</para>
<para>
<command>CREATE NODE</command> only runs on the local node where it is launched.
</para>
</refsect1>
<refsect1>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><replaceable class="parameter">groupname</replaceable></term>
<listitem>
<para>
The name of the selected cluster node group.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">nodename</replaceable></term>
<listitem>
<para>
The name of a cluster node.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Notes</title>
<para>
A group of nodes works as an alias for node lists when defining tables on
sub-clusters. Only Datanodes can be included in node groups.
</para>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
Create a cluster node group made of nodes called Datanode1, Datanode2.
<programlisting>
CREATE NODE GROUP cluster_group WITH Datanode1, Datanode2;
</programlisting>
</para>
</refsect1>
<refsect1>
<title>Compatibility</title>
<para>
<command>CREATE NODE GROUP</command> does not conform to the <acronym>
SQL</acronym> standards, it is a <productname>Postgres-XL</productname> specific command.
</para>
</refsect1>
</refentry>
|
