Hi

2017-02-23 12:17 GMT+01:00 Pavel Stehule <pavel.steh...@gmail.com>:

> Hi
>
> Currently is not possible to control sort columns for \d* commands.
> Usually schema and table name is used. Really often task is collect the
> most big objects in database. "\dt+, \di+" shows necessary information, but
> not in practical order.
>
> Instead introduction some additional flags to backslash commands, I
> propose a special psql variable that can be used for specification of order
> used when some plus command is used.
>
> some like
>
> set EXTENDED_DESCRIBE_SORT size_desc
> \dt+
> \l+
> \di+
>
> Possible variants: schema_table, table_schema, size_desc, size_asc
>
> Comments, notes?
>

here is a patch

Regards

Pavel


>
> Regards
>
> Pavel
>
diff --git a/doc/src/sgml/ref/psql-ref.sgml b/doc/src/sgml/ref/psql-ref.sgml
index ae58708aae..b4dfd1f71c 100644
--- a/doc/src/sgml/ref/psql-ref.sgml
+++ b/doc/src/sgml/ref/psql-ref.sgml
@@ -3495,6 +3495,18 @@ bar
       </varlistentry>
 
       <varlistentry>
+        <term><varname>VERBOSE_SORT</varname></term>
+        <listitem>
+        <para>
+        This variable can be set to the values <literal>schema_name</>,
+        <literal>name_schema</>, <literal>size_asc</literal>, or
+        <literal>size_desc</> to control the order of content of 
+        decrible command.
+        </para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
         <term><varname>VERBOSITY</varname></term>
         <listitem>
         <para>
diff --git a/src/bin/psql/describe.c b/src/bin/psql/describe.c
index e2e4cbcc08..7ae5992b90 100644
--- a/src/bin/psql/describe.c
+++ b/src/bin/psql/describe.c
@@ -263,7 +263,18 @@ describeTablespaces(const char *pattern, bool verbose)
 						  NULL, "spcname", NULL,
 						  NULL);
 
-	appendPQExpBufferStr(&buf, "ORDER BY 1;");
+
+	if (verbose && pset.sversion >= 90200)
+	{
+		if (pset.verbose_sort == PSQL_SORT_SIZE_ASC)
+			appendPQExpBufferStr(&buf, "ORDER BY pg_catalog.pg_tablespace_size(oid), 1;");
+		else if (pset.verbose_sort == PSQL_SORT_SIZE_DESC)
+			appendPQExpBufferStr(&buf, "ORDER BY pg_catalog.pg_tablespace_size(oid) DESC, 1;");
+		else
+			appendPQExpBufferStr(&buf, "ORDER BY 1;");
+	}
+	else
+		appendPQExpBufferStr(&buf, "ORDER BY 1;");
 
 	res = PSQLexec(buf.data);
 	termPQExpBuffer(&buf);
@@ -822,7 +833,21 @@ listAllDbs(const char *pattern, bool verbose)
 		processSQLNamePattern(pset.db, &buf, pattern, false, false,
 							  NULL, "d.datname", NULL, NULL);
 
-	appendPQExpBufferStr(&buf, "ORDER BY 1;");
+	if (verbose && pset.sversion >= 80200)
+	{
+		if (pset.verbose_sort == PSQL_SORT_SIZE_ASC)
+			appendPQExpBuffer(&buf,
+						  "ORDER BY CASE WHEN pg_catalog.has_database_privilege(d.datname, 'CONNECT')\n"
+						  "              THEN pg_catalog.pg_database_size(d.datname) END ASC, 1;\n");
+		else if (pset.verbose_sort == PSQL_SORT_SIZE_DESC)
+			appendPQExpBuffer(&buf,
+						  "ORDER BY CASE WHEN pg_catalog.has_database_privilege(d.datname, 'CONNECT')\n"
+						  "              THEN pg_catalog.pg_database_size(d.datname) END DESC, 1;\n");
+		else
+			appendPQExpBufferStr(&buf, "ORDER BY 1;");
+	}
+	else
+		appendPQExpBufferStr(&buf, "ORDER BY 1;");
 	res = PSQLexec(buf.data);
 	termPQExpBuffer(&buf);
 	if (!res)
@@ -3258,7 +3283,29 @@ listTables(const char *tabtypes, const char *pattern, bool verbose, bool showSys
 						  "n.nspname", "c.relname", NULL,
 						  "pg_catalog.pg_table_is_visible(c.oid)");
 
-	appendPQExpBufferStr(&buf, "ORDER BY 1,2;");
+	if (verbose && pset.sversion >= 80100)
+	{
+		if (pset.verbose_sort == PSQL_SORT_SCHEMA_NAME)
+			appendPQExpBufferStr(&buf, "ORDER BY 1,2;");
+		else if (pset.verbose_sort == PSQL_SORT_NAME_SCHEMA)
+			appendPQExpBufferStr(&buf, "ORDER BY 2,1;");
+		else
+		{
+			if (pset.sversion >= 90000)
+				appendPQExpBufferStr(&buf,
+					"ORDER BY pg_catalog.pg_table_size(c.oid) ");
+			else
+				appendPQExpBufferStr(&buf,
+					"ORDER BY pg_catalog.pg_relation_size(c.oid) ");
+
+			if (pset.verbose_sort == PSQL_SORT_SIZE_DESC)
+				appendPQExpBufferStr(&buf, "DESC, 1,2;");
+			else
+				appendPQExpBufferStr(&buf, "ASC, 1,2;");
+		}
+	}
+	else
+		appendPQExpBufferStr(&buf, "ORDER BY 1,2;");
 
 	res = PSQLexec(buf.data);
 	termPQExpBuffer(&buf);
diff --git a/src/bin/psql/help.c b/src/bin/psql/help.c
index 3e3cab4941..09c1a49413 100644
--- a/src/bin/psql/help.c
+++ b/src/bin/psql/help.c
@@ -327,7 +327,7 @@ helpVariables(unsigned short int pager)
 	 * Windows builds currently print one more line than non-Windows builds.
 	 * Using the larger number is fine.
 	 */
-	output = PageOutput(88, pager ? &(pset.popt.topt) : NULL);
+	output = PageOutput(90, pager ? &(pset.popt.topt) : NULL);
 
 	fprintf(output, _("List of specially treated variables\n\n"));
 
@@ -364,6 +364,8 @@ helpVariables(unsigned short int pager)
 	fprintf(output, _("  SINGLESTEP         single-step mode (same as -s option)\n"));
 	fprintf(output, _("  USER               the currently connected database user\n"));
 	fprintf(output, _("  VERBOSITY          controls verbosity of error reports [default, verbose, terse]\n"));
+	fprintf(output, _("  VERBOSE_SORT       controls sort of result in verbose mode\n"
+	"                     [schema_name, name_schema, size_desc, size_asc]\n"));
 
 	fprintf(output, _("\nDisplay settings:\n"));
 	fprintf(output, _("Usage:\n"));
diff --git a/src/bin/psql/settings.h b/src/bin/psql/settings.h
index 195f5a1184..eb89741526 100644
--- a/src/bin/psql/settings.h
+++ b/src/bin/psql/settings.h
@@ -77,6 +77,14 @@ enum trivalue
 	TRI_YES
 };
 
+typedef enum
+{
+	PSQL_SORT_SCHEMA_NAME,
+	PSQL_SORT_NAME_SCHEMA,
+	PSQL_SORT_SIZE_ASC,
+	PSQL_SORT_SIZE_DESC
+} PSQL_SORT;
+
 typedef struct _psqlSettings
 {
 	PGconn	   *db;				/* connection to backend */
@@ -137,6 +145,7 @@ typedef struct _psqlSettings
 	const char *prompt3;
 	PGVerbosity verbosity;		/* current error verbosity level */
 	PGContextVisibility show_context;	/* current context display level */
+	PSQL_SORT	verbose_sort;	/* kind of sort when describe verbose is used */
 } PsqlSettings;
 
 extern PsqlSettings pset;
diff --git a/src/bin/psql/startup.c b/src/bin/psql/startup.c
index 88d686a5b7..8971e927d5 100644
--- a/src/bin/psql/startup.c
+++ b/src/bin/psql/startup.c
@@ -172,6 +172,8 @@ main(int argc, char *argv[])
 	SetVariable(pset.vars, "PROMPT2", DEFAULT_PROMPT2);
 	SetVariable(pset.vars, "PROMPT3", DEFAULT_PROMPT3);
 
+	SetVariable(pset.vars, "VERBOSE_SORT", "schema_name");
+
 	parse_psql_options(argc, argv, &options);
 
 	/*
@@ -1072,6 +1074,36 @@ verbosity_hook(const char *newval)
 }
 
 static char *
+verbose_sort_substitute_hook(char *newval)
+{
+	if (newval == NULL)
+		newval = pg_strdup("schema_name");
+	return newval;
+}
+
+static bool
+verbose_sort_hook(const char *newval)
+{
+	Assert(newval != NULL);		/* else substitute hook messed up */
+	if (pg_strcasecmp(newval, "schema_name") == 0)
+		pset.verbose_sort = PSQL_SORT_SCHEMA_NAME;
+	else if (pg_strcasecmp(newval, "name_schema") == 0)
+		pset.verbose_sort = PSQL_SORT_NAME_SCHEMA;
+	else if (pg_strcasecmp(newval, "size_desc") == 0)
+		pset.verbose_sort = PSQL_SORT_SIZE_DESC;
+	else if (pg_strcasecmp(newval, "size_asc") == 0)
+		pset.verbose_sort = PSQL_SORT_SIZE_ASC;
+	else
+	{
+		PsqlVarEnumError("VERBOSE_SORT", newval, "schema_name, name_schema, size_desc, size_asc");
+		return false;
+	}
+
+	return true;
+}
+
+
+static char *
 show_context_substitute_hook(char *newval)
 {
 	if (newval == NULL)
@@ -1160,6 +1192,9 @@ EstablishVariableSpace(void)
 	SetVariableHooks(pset.vars, "VERBOSITY",
 					 verbosity_substitute_hook,
 					 verbosity_hook);
+	SetVariableHooks(pset.vars, "VERBOSE_SORT",
+					 verbose_sort_substitute_hook,
+					 verbose_sort_hook);
 	SetVariableHooks(pset.vars, "SHOW_CONTEXT",
 					 show_context_substitute_hook,
 					 show_context_hook);
diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c
index 94814c20d0..2bc8af5ae4 100644
--- a/src/bin/psql/tab-complete.c
+++ b/src/bin/psql/tab-complete.c
@@ -3320,6 +3320,9 @@ psql_completion(const char *text, int start, int end)
 			COMPLETE_WITH_LIST_CS3("never", "errors", "always");
 		else if (TailMatchesCS1("VERBOSITY"))
 			COMPLETE_WITH_LIST_CS3("default", "verbose", "terse");
+		else if (TailMatchesCS1("VERBOSE_SORT"))
+			COMPLETE_WITH_LIST_CS4("schema_name", "name_schema",
+								   "size_desc", "size_asc");
 	}
 	else if (TailMatchesCS1("\\sf*"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_functions, NULL);
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