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Some minor improvements to logical decoding document.

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Also improve help message in pg_recvlogical.
This commit is contained in:
Fujii Masao 2014-03-19 22:13:05 +09:00
parent 033dc1c92c
commit fb1d92a9fa
2 changed files with 10 additions and 10 deletions
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18
doc/src/sgml/logicaldecoding.sgml
View File

@ -23,7 +23,7 @@
Every output plugin has access to each individual new row produced
by <command>INSERT</command> and the new row version created
by <command>UPDATE</command>. Availability of old row versions for
<command>UPDATE</command> and delete <command>DELETE</command> depends on
<command>UPDATE</command> and <command>DELETE</command> depends on
the configured
<link linkend="SQL-CREATETABLE-REPLICA-IDENTITY"><literal>REPLICA
IDENTITY</literal></link>.
@ -46,7 +46,7 @@
</para>
<para>
Before you can use logical decoding, you must set
<xref linkend="guc-wal-level"> to logical and
<xref linkend="guc-wal-level"> to <literal>logical</literal> and
<xref linkend="guc-max-replication-slots"> to at least 1.
Then, you should connect to the target database (in the example
below, <literal>postgres</literal>) as a superuser.
@ -149,16 +149,16 @@ postgres=# SELECT pg_drop_replication_slot('regression_slot');
another connection.
</para>
<programlisting>
# pg_recvlogical -d testdb --slot test --create
# pg_recvlogical -d testdb --slot test --start -f -
# pg_recvlogical -d postgres --slot test --create
# pg_recvlogical -d postgres --slot test --start -f -
CTRL-Z
# psql -c "INSERT INTO data(data) VALUES('4');"
# psql -d postgres -c "INSERT INTO data(data) VALUES('4');"
# fg
BEGIN 693
table public.data: INSERT: id[integer]:4 data[text]:'4'
COMMIT 693
CTRL-C
# pg_recvlogical -d testdb --slot test --drop
# pg_recvlogical -d postgres --slot test --drop
</programlisting>
</sect1>
<sect1 id="logicaldecoding-explanation">
@ -198,7 +198,7 @@ CTRL-C
in the stream).
</para>
<note>
<para>PostgreSQL also has streaming replication slots
<para><productname>PostgreSQL</productname> also has streaming replication slots
(see <xref linkend="streaming-replication">), but they are used somewhat
differently there.
</para>
@ -258,8 +258,8 @@ CTRL-C
<sect1 id="logicaldecoding-walsender">
<title>Streaming Replication Protocol Interface</title>
<para>
The <literal>CREATE_REPLICATION_SLOT SLOT slotname LOGICAL
options</literal>, <literal>DROP_REPLICATION_SLOT SLOT slotname</literal>
The <literal>CREATE_REPLICATION_SLOT slotname LOGICAL
options</literal>, <literal>DROP_REPLICATION_SLOT slotname</literal>
and <literal>START_REPLICATION SLOT slotname LOGICAL options</literal>
commands can be used to create, drop and stream changes from a replication
slot respectively. These commands are only available over a replication

2
src/bin/pg_basebackup/pg_recvlogical.c
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@ -83,7 +83,7 @@ usage(void)
printf(_(" -F --fsync-interval=INTERVAL\n"
" frequency of syncs to the output file (in seconds, defaults to 10)\n"));
printf(_(" -o, --option=NAME[=VALUE]\n"
" Specify option NAME with optional value VAL, to be passed\n"
" Specify option NAME with optional value VALUE, to be passed\n"
" to the output plugin\n"));
printf(_(" -P, --plugin=PLUGIN use output plugin PLUGIN (defaults to test_decoding)\n"));
printf(_(" -s, --status-interval=INTERVAL\n"