\close has been introduced in
d55322b0da60 to be able to close a
prepared statement using the extended protocol in psql. Per discussion,
the name "close" is ambiguous. At the SQL level, CLOSE is used to close
a cursor. At protocol level, the close message can be used to either
close a statement or a portal.
This patch renames \close to \close_prepared to avoid any ambiguity and
make it clear that this is used to close a prepared statement. This new
name has been chosen based on the feedback from the author and the
reviewers.
Author: Anthonin Bonnefoy <
[email protected]>
Reviewed-by: Peter Eisentraut <[email protected]>
Reviewed-by: Jelte Fennema-Nio <[email protected]>
Discussion: https://postgr.es/m/
3e694442-0df5-4f92-a08f-
c5d4c4346b85@eisentraut.org
</listitem>
</varlistentry>
- <varlistentry id="app-psql-meta-command-close">
- <term><literal>\close</literal> <replaceable class="parameter">prepared_statement_name</replaceable></term>
+ <varlistentry id="app-psql-meta-command-close-prepared">
+ <term><literal>\close_prepared</literal> <replaceable class="parameter">prepared_statement_name</replaceable></term>
<listitem>
<para>
Example:
<programlisting>
SELECT $1 \parse stmt1
-\close stmt1
+\close_prepared stmt1
</programlisting>
</para>
All queries executed while a pipeline is ongoing use the extended
query protocol. Queries are appended to the pipeline when ending with
a semicolon. The meta-commands <literal>\bind</literal>,
- <literal>\bind_named</literal>, <literal>\close</literal> or
+ <literal>\bind_named</literal>, <literal>\close_prepared</literal> or
<literal>\parse</literal> can be used in an ongoing pipeline. While
a pipeline is ongoing, <literal>\sendpipeline</literal> will append
the current query buffer to the pipeline. Other meta-commands like
<link
linkend="app-psql-meta-command-bind-named"><literal>\bind_named</literal></link>,
and <link
- linkend="app-psql-meta-command-close"><literal>\close</literal></link>.
+ linkend="app-psql-meta-command-close-prepared"><literal>\close_prepared</literal></link>.
</para>
</listitem>
static backslashResult exec_command_connect(PsqlScanState scan_state, bool active_branch);
static backslashResult exec_command_cd(PsqlScanState scan_state, bool active_branch,
const char *cmd);
-static backslashResult exec_command_close(PsqlScanState scan_state, bool active_branch,
- const char *cmd);
+static backslashResult exec_command_close_prepared(PsqlScanState scan_state,
+ bool active_branch, const char *cmd);
static backslashResult exec_command_conninfo(PsqlScanState scan_state, bool active_branch);
static backslashResult exec_command_copy(PsqlScanState scan_state, bool active_branch);
static backslashResult exec_command_copyright(PsqlScanState scan_state, bool active_branch);
status = exec_command_connect(scan_state, active_branch);
else if (strcmp(cmd, "cd") == 0)
status = exec_command_cd(scan_state, active_branch, cmd);
- else if (strcmp(cmd, "close") == 0)
- status = exec_command_close(scan_state, active_branch, cmd);
+ else if (strcmp(cmd, "close_prepared") == 0)
+ status = exec_command_close_prepared(scan_state, active_branch, cmd);
else if (strcmp(cmd, "conninfo") == 0)
status = exec_command_conninfo(scan_state, active_branch);
else if (pg_strcasecmp(cmd, "copy") == 0)
}
/*
- * \close -- close a previously prepared statement
+ * \close_prepared -- close a previously prepared statement
*/
static backslashResult
-exec_command_close(PsqlScanState scan_state, bool active_branch, const char *cmd)
+exec_command_close_prepared(PsqlScanState scan_state, bool active_branch, const char *cmd)
{
backslashResult status = PSQL_CMD_SKIP_LINE;
switch (pset.send_mode)
{
- case PSQL_SEND_EXTENDED_CLOSE: /* \close */
+ case PSQL_SEND_EXTENDED_CLOSE: /* \close_prepared */
free(pset.stmtName);
break;
case PSQL_SEND_EXTENDED_PARSE: /* \parse */
HELP0(" \\bind [PARAM]... set query parameters\n");
HELP0(" \\bind_named STMT_NAME [PARAM]...\n"
" set query parameters for an existing prepared statement\n");
- HELP0(" \\close STMT_NAME close an existing prepared statement\n");
+ HELP0(" \\close_prepared STMT_NAME\n"
+ " close an existing prepared statement\n");
HELP0(" \\endpipeline exit pipeline mode\n");
HELP0(" \\flush flush output data to the server\n");
HELP0(" \\flushrequest send request to the server to flush its output buffer\n");
static const char *const backslash_commands[] = {
"\\a",
"\\bind", "\\bind_named",
- "\\connect", "\\conninfo", "\\C", "\\cd", "\\close", "\\copy",
+ "\\connect", "\\conninfo", "\\C", "\\cd", "\\close_prepared", "\\copy",
"\\copyright", "\\crosstabview",
"\\d", "\\da", "\\dA", "\\dAc", "\\dAf", "\\dAo", "\\dAp",
"\\db", "\\dc", "\\dconfig", "\\dC", "\\dd", "\\ddp", "\\dD",
foo4 | bar4
(1 row)
--- \close (extended query protocol)
-\close
-\close: missing required argument
-\close ''
-\close stmt2
-\close stmt2
+-- \close_prepared (extended query protocol)
+\close_prepared
+\close_prepared: missing required argument
+\close_prepared ''
+\close_prepared stmt2
+\close_prepared stmt2
SELECT name, statement FROM pg_prepared_statements ORDER BY name;
name | statement
-------+----------------
\C arg1
\c arg1 arg2 arg3 arg4
\cd arg1
- \close stmt1
+ \close_prepared stmt1
\conninfo
\copy arg1 arg2 arg3 arg4 arg5 arg6
\copyright
SELECT $1 \bind 1 \sendpipeline
SELECT $1 \parse a
\bind_named a 1 \sendpipeline
-\close a
+\close_prepared a
\flushrequest
\getresults
ERROR: bind message supplies 0 parameters, but prepared statement "" requires 1
SELECT $1 \bind 1 \sendpipeline
SELECT $1 \parse a
\bind_named a 1 \sendpipeline
-\close a
+\close_prepared a
-- Sync allows pipeline to recover.
\syncpipeline
\getresults
SELECT $1 \bind 1 \sendpipeline
SELECT $1 \parse a
\bind_named a 1 \sendpipeline
-\close a
+\close_prepared a
\flushrequest
\getresults
?column?
-- Multiple \g calls mean multiple executions
\bind_named stmt2 'foo3' \g \bind_named stmt3 'foo4' 'bar4' \g
--- \close (extended query protocol)
-\close
-\close ''
-\close stmt2
-\close stmt2
+-- \close_prepared (extended query protocol)
+\close_prepared
+\close_prepared ''
+\close_prepared stmt2
+\close_prepared stmt2
SELECT name, statement FROM pg_prepared_statements ORDER BY name;
-- \bind (extended query protocol)
\C arg1
\c arg1 arg2 arg3 arg4
\cd arg1
- \close stmt1
+ \close_prepared stmt1
\conninfo
\copy arg1 arg2 arg3 arg4 arg5 arg6
\copyright
SELECT $1 \bind 1 \sendpipeline
SELECT $1 \parse a
\bind_named a 1 \sendpipeline
-\close a
+\close_prepared a
\flushrequest
\getresults
-- Pipeline is aborted.
SELECT $1 \bind 1 \sendpipeline
SELECT $1 \parse a
\bind_named a 1 \sendpipeline
-\close a
+\close_prepared a
-- Sync allows pipeline to recover.
\syncpipeline
\getresults
SELECT $1 \bind 1 \sendpipeline
SELECT $1 \parse a
\bind_named a 1 \sendpipeline
-\close a
+\close_prepared a
\flushrequest
\getresults
\endpipeline