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Clean up SQL emitted by psql/describe.c. 

Fix assorted places that had not bothered with the convention of
prefixing catalog and function names with "pg_catalog.".  That
could possibly result in query failure when running with a nondefault
search_path.  Also fix two places that weren't quoting OID literals.
I think the latter hasn't mattered much since about 7.3, but it's still
a bad idea to be doing it in 99 places and not in 2 others.

Also remove a useless EXISTS sub-select that someone had stuck into
describeOneTableDetails' queries for child tables.  We just got the OID
out of pg_class, so I hardly see how checking that it exists in pg_class
was doing anything helpful.

In passing, try to improve the emitted formatting of a couple of
these queries, though I didn't work really hard on that.  And merge
unnecessarily duplicative coding in some other places.

Much of this was new in HEAD, but some was quite old; back-patch
as appropriate.
This commit is contained in:
Tom Lane 2017-07-26 19:35:35 -04:00
parent 5e3254f086
commit 50d2426f5a
1 changed files with 75 additions and 91 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

166
src/bin/psql/describe.c
View File

@ -1594,17 +1594,17 @@ describeOneTableDetails(const char *schemaname,
else
appendPQExpBufferStr(&buf, "\n NULL AS attcollation");
if (pset.sversion >= 100000)
appendPQExpBufferStr(&buf, ", a.attidentity");
appendPQExpBufferStr(&buf, ",\n a.attidentity");
else
appendPQExpBufferStr(&buf, ", ''::\"char\" AS attidentity");
appendPQExpBufferStr(&buf, ",\n ''::pg_catalog.char AS attidentity");
if (tableinfo.relkind == RELKIND_INDEX)
appendPQExpBufferStr(&buf, ",\n pg_catalog.pg_get_indexdef(a.attrelid, a.attnum, TRUE) AS indexdef");
else
appendPQExpBufferStr(&buf, ",\n NULL AS indexdef");
if (tableinfo.relkind == RELKIND_FOREIGN_TABLE && pset.sversion >= 90200)
appendPQExpBufferStr(&buf, ",\n CASE WHEN attfdwoptions IS NULL THEN '' ELSE "
" '(' || array_to_string(ARRAY(SELECT quote_ident(option_name) || ' ' || quote_literal(option_value) FROM "
" pg_options_to_table(attfdwoptions)), ', ') || ')' END AS attfdwoptions");
" '(' || pg_catalog.array_to_string(ARRAY(SELECT pg_catalog.quote_ident(option_name) || ' ' || pg_catalog.quote_literal(option_value) FROM "
" pg_catalog.pg_options_to_table(attfdwoptions)), ', ') || ')' END AS attfdwoptions");
else
appendPQExpBufferStr(&buf, ",\n NULL AS attfdwoptions");
if (verbose)
@ -1854,30 +1854,24 @@ describeOneTableDetails(const char *schemaname,
/* Make footers */
if (pset.sversion >= 100000)
{
/* Get the partition information */
/* Get the partition information */
PGresult *result;
char *parent_name;
char *partdef;
char *partconstraintdef = NULL;
printfPQExpBuffer(&buf,
"SELECT inhparent::pg_catalog.regclass,\n"
" pg_catalog.pg_get_expr(c.relpartbound, inhrelid)");
/* If verbose, also request the partition constraint definition */
if (verbose)
printfPQExpBuffer(&buf,
"SELECT inhparent::pg_catalog.regclass,"
" pg_get_expr(c.relpartbound, inhrelid),"
" pg_get_partition_constraintdef(inhrelid)"
" FROM pg_catalog.pg_class c"
" JOIN pg_catalog.pg_inherits"
" ON c.oid = inhrelid"
" WHERE c.oid = '%s' AND c.relispartition;", oid);
else
printfPQExpBuffer(&buf,
"SELECT inhparent::pg_catalog.regclass,"
" pg_get_expr(c.relpartbound, inhrelid)"
" FROM pg_catalog.pg_class c"
" JOIN pg_catalog.pg_inherits"
" ON c.oid = inhrelid"
" WHERE c.oid = '%s' AND c.relispartition;", oid);
appendPQExpBuffer(&buf,
",\n pg_catalog.pg_get_partition_constraintdef(inhrelid)");
appendPQExpBuffer(&buf,
"\nFROM pg_catalog.pg_class c"
" JOIN pg_catalog.pg_inherits i"
" ON c.oid = inhrelid"
"\nWHERE c.oid = '%s' AND c.relispartition;", oid);
result = PSQLexec(buf.data);
if (!result)
goto error_return;
@ -2041,7 +2035,7 @@ describeOneTableDetails(const char *schemaname,
"\n a.attnum=d.refobjsubid)"
"\nWHERE d.classid='pg_catalog.pg_class'::pg_catalog.regclass"
"\n AND d.refclassid='pg_catalog.pg_class'::pg_catalog.regclass"
"\n AND d.objid=%s"
"\n AND d.objid='%s'"
"\n AND d.deptype IN ('a', 'i')",
oid);
@ -2285,36 +2279,26 @@ describeOneTableDetails(const char *schemaname,
/* print any row-level policies */
if (pset.sversion >= 90500)
{
printfPQExpBuffer(&buf, "SELECT pol.polname,");
if (pset.sversion >= 100000)
printfPQExpBuffer(&buf,
"SELECT pol.polname, pol.polpermissive,\n"
"CASE WHEN pol.polroles = '{0}' THEN NULL ELSE array_to_string(array(select rolname from pg_roles where oid = any (pol.polroles) order by 1),',') END,\n"
"pg_catalog.pg_get_expr(pol.polqual, pol.polrelid),\n"
"pg_catalog.pg_get_expr(pol.polwithcheck, pol.polrelid),\n"
"CASE pol.polcmd\n"
"WHEN 'r' THEN 'SELECT'\n"
"WHEN 'a' THEN 'INSERT'\n"
"WHEN 'w' THEN 'UPDATE'\n"
"WHEN 'd' THEN 'DELETE'\n"
"END AS cmd\n"
"FROM pg_catalog.pg_policy pol\n"
"WHERE pol.polrelid = '%s' ORDER BY 1;",
oid);
appendPQExpBuffer(&buf,
" pol.polpermissive,\n");
else
printfPQExpBuffer(&buf,
"SELECT pol.polname, 't' as polpermissive,\n"
"CASE WHEN pol.polroles = '{0}' THEN NULL ELSE array_to_string(array(select rolname from pg_roles where oid = any (pol.polroles) order by 1),',') END,\n"
"pg_catalog.pg_get_expr(pol.polqual, pol.polrelid),\n"
"pg_catalog.pg_get_expr(pol.polwithcheck, pol.polrelid),\n"
"CASE pol.polcmd\n"
"WHEN 'r' THEN 'SELECT'\n"
"WHEN 'a' THEN 'INSERT'\n"
"WHEN 'w' THEN 'UPDATE'\n"
"WHEN 'd' THEN 'DELETE'\n"
"END AS cmd\n"
"FROM pg_catalog.pg_policy pol\n"
"WHERE pol.polrelid = '%s' ORDER BY 1;",
oid);
appendPQExpBuffer(&buf,
" 't' as polpermissive,\n");
appendPQExpBuffer(&buf,
" CASE WHEN pol.polroles = '{0}' THEN NULL ELSE pg_catalog.array_to_string(array(select rolname from pg_catalog.pg_roles where oid = any (pol.polroles) order by 1),',') END,\n"
" pg_catalog.pg_get_expr(pol.polqual, pol.polrelid),\n"
" pg_catalog.pg_get_expr(pol.polwithcheck, pol.polrelid),\n"
" CASE pol.polcmd\n"
" WHEN 'r' THEN 'SELECT'\n"
" WHEN 'a' THEN 'INSERT'\n"
" WHEN 'w' THEN 'UPDATE'\n"
" WHEN 'd' THEN 'DELETE'\n"
" END AS cmd\n"
"FROM pg_catalog.pg_policy pol\n"
"WHERE pol.polrelid = '%s' ORDER BY 1;",
oid);
result = PSQLexec(buf.data);
if (!result)
@ -2543,7 +2527,7 @@ describeOneTableDetails(const char *schemaname,
"UNION ALL\n"
"SELECT pubname\n"
"FROM pg_catalog.pg_publication p\n"
"WHERE p.puballtables AND pg_relation_is_publishable('%s')\n"
"WHERE p.puballtables AND pg_catalog.pg_relation_is_publishable('%s')\n"
"ORDER BY 1;",
oid, oid);
@ -2764,13 +2748,13 @@ describeOneTableDetails(const char *schemaname,
/* Footer information about foreign table */
printfPQExpBuffer(&buf,
"SELECT s.srvname,\n"
" array_to_string(ARRAY(SELECT "
" quote_ident(option_name) || ' ' || "
" quote_literal(option_value) FROM "
" pg_options_to_table(ftoptions)), ', ') "
" pg_catalog.array_to_string(ARRAY(\n"
" SELECT pg_catalog.quote_ident(option_name)"
" || ' ' || pg_catalog.quote_literal(option_value)\n"
" FROM pg_catalog.pg_options_to_table(ftoptions)), ', ')\n"
"FROM pg_catalog.pg_foreign_table f,\n"
" pg_catalog.pg_foreign_server s\n"
"WHERE f.ftrelid = %s AND s.oid = f.ftserver;",
"WHERE f.ftrelid = '%s' AND s.oid = f.ftserver;",
oid);
result = PSQLexec(buf.data);
if (!result)
@ -2834,22 +2818,22 @@ describeOneTableDetails(const char *schemaname,
/* print child tables (with additional info if partitions) */
if (pset.sversion >= 100000)
printfPQExpBuffer(&buf,
"SELECT c.oid::pg_catalog.regclass, pg_get_expr(c.relpartbound, c.oid)"
"SELECT c.oid::pg_catalog.regclass, pg_catalog.pg_get_expr(c.relpartbound, c.oid)"
" FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i"
" WHERE c.oid=i.inhrelid AND"
" i.inhparent = '%s' AND"
" EXISTS (SELECT 1 FROM pg_class c WHERE c.oid = '%s')"
" ORDER BY c.oid::pg_catalog.regclass::pg_catalog.text;", oid, oid);
" WHERE c.oid=i.inhrelid AND i.inhparent = '%s'"
" ORDER BY c.oid::pg_catalog.regclass::pg_catalog.text;", oid);
else if (pset.sversion >= 80300)
printfPQExpBuffer(&buf,
"SELECT c.oid::pg_catalog.regclass"
" FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i"
" WHERE c.oid=i.inhrelid AND"
" i.inhparent = '%s' AND"
" EXISTS (SELECT 1 FROM pg_class c WHERE c.oid = '%s')"
" ORDER BY c.oid::pg_catalog.regclass::pg_catalog.text;", oid, oid);
" WHERE c.oid=i.inhrelid AND i.inhparent = '%s'"
" ORDER BY c.oid::pg_catalog.regclass::pg_catalog.text;", oid);
else
printfPQExpBuffer(&buf, "SELECT c.oid::pg_catalog.regclass FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i WHERE c.oid=i.inhrelid AND i.inhparent = '%s' ORDER BY c.relname;", oid);
printfPQExpBuffer(&buf,
"SELECT c.oid::pg_catalog.regclass"
" FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i"
" WHERE c.oid=i.inhrelid AND i.inhparent = '%s'"
" ORDER BY c.relname;", oid);
result = PSQLexec(buf.data);
if (!result)
@ -3234,16 +3218,16 @@ listDbRoleSettings(const char *pattern, const char *pattern2)
printfPQExpBuffer(&buf, "SELECT rolname AS \"%s\", datname AS \"%s\",\n"
"pg_catalog.array_to_string(setconfig, E'\\n') AS \"%s\"\n"
"FROM pg_db_role_setting AS s\n"
"LEFT JOIN pg_database ON pg_database.oid = setdatabase\n"
"LEFT JOIN pg_roles ON pg_roles.oid = setrole\n",
"FROM pg_catalog.pg_db_role_setting s\n"
"LEFT JOIN pg_catalog.pg_database d ON d.oid = setdatabase\n"
"LEFT JOIN pg_catalog.pg_roles r ON r.oid = setrole\n",
gettext_noop("Role"),
gettext_noop("Database"),
gettext_noop("Settings"));
havewhere = processSQLNamePattern(pset.db, &buf, pattern, false, false,
NULL, "pg_roles.rolname", NULL, NULL);
NULL, "r.rolname", NULL, NULL);
processSQLNamePattern(pset.db, &buf, pattern2, havewhere, false,
NULL, "pg_database.datname", NULL, NULL);
NULL, "d.datname", NULL, NULL);
appendPQExpBufferStr(&buf, "ORDER BY 1, 2;");
}
else
@ -3475,13 +3459,13 @@ listLanguages(const char *pattern, bool verbose, bool showSystem)
{
appendPQExpBuffer(&buf,
",\n NOT l.lanispl AS \"%s\",\n"
" l.lanplcallfoid::regprocedure AS \"%s\",\n"
" l.lanvalidator::regprocedure AS \"%s\",\n ",
" l.lanplcallfoid::pg_catalog.regprocedure AS \"%s\",\n"
" l.lanvalidator::pg_catalog.regprocedure AS \"%s\",\n ",
gettext_noop("Internal language"),
gettext_noop("Call handler"),
gettext_noop("Validator"));
if (pset.sversion >= 90000)
appendPQExpBuffer(&buf, "l.laninline::regprocedure AS \"%s\",\n ",
appendPQExpBuffer(&buf, "l.laninline::pg_catalog.regprocedure AS \"%s\",\n ",
gettext_noop("Inline handler"));
printACLColumn(&buf, "l.lanacl");
}
@ -4611,10 +4595,10 @@ listForeignDataWrappers(const char *pattern, bool verbose)
printACLColumn(&buf, "fdwacl");
appendPQExpBuffer(&buf,
",\n CASE WHEN fdwoptions IS NULL THEN '' ELSE "
" '(' || array_to_string(ARRAY(SELECT "
" quote_ident(option_name) || ' ' || "
" quote_literal(option_value) FROM "
" pg_options_to_table(fdwoptions)), ', ') || ')' "
" '(' || pg_catalog.array_to_string(ARRAY(SELECT "
" pg_catalog.quote_ident(option_name) || ' ' || "
" pg_catalog.quote_literal(option_value) FROM "
" pg_catalog.pg_options_to_table(fdwoptions)), ', ') || ')' "
" END AS \"%s\"",
gettext_noop("FDW options"));
@ -4692,10 +4676,10 @@ listForeignServers(const char *pattern, bool verbose)
" s.srvtype AS \"%s\",\n"
" s.srvversion AS \"%s\",\n"
" CASE WHEN srvoptions IS NULL THEN '' ELSE "
" '(' || array_to_string(ARRAY(SELECT "
" quote_ident(option_name) || ' ' || "
" quote_literal(option_value) FROM "
" pg_options_to_table(srvoptions)), ', ') || ')' "
" '(' || pg_catalog.array_to_string(ARRAY(SELECT "
" pg_catalog.quote_ident(option_name) || ' ' || "
" pg_catalog.quote_literal(option_value) FROM "
" pg_catalog.pg_options_to_table(srvoptions)), ', ') || ')' "
" END AS \"%s\",\n"
" d.description AS \"%s\"",
gettext_noop("Type"),
@ -4710,7 +4694,7 @@ listForeignServers(const char *pattern, bool verbose)
if (verbose)
appendPQExpBufferStr(&buf,
"LEFT JOIN pg_description d\n "
"LEFT JOIN pg_catalog.pg_description d\n "
"ON d.classoid = s.tableoid AND d.objoid = s.oid "
"AND d.objsubid = 0\n");
@ -4766,10 +4750,10 @@ listUserMappings(const char *pattern, bool verbose)
if (verbose)
appendPQExpBuffer(&buf,
",\n CASE WHEN umoptions IS NULL THEN '' ELSE "
" '(' || array_to_string(ARRAY(SELECT "
" quote_ident(option_name) || ' ' || "
" quote_literal(option_value) FROM "
" pg_options_to_table(umoptions)), ', ') || ')' "
" '(' || pg_catalog.array_to_string(ARRAY(SELECT "
" pg_catalog.quote_ident(option_name) || ' ' || "
" pg_catalog.quote_literal(option_value) FROM "
" pg_catalog.pg_options_to_table(umoptions)), ', ') || ')' "
" END AS \"%s\"",
gettext_noop("FDW options"));
@ -4829,10 +4813,10 @@ listForeignTables(const char *pattern, bool verbose)
if (verbose)
appendPQExpBuffer(&buf,
",\n CASE WHEN ftoptions IS NULL THEN '' ELSE "
" '(' || array_to_string(ARRAY(SELECT "
" quote_ident(option_name) || ' ' || "
" quote_literal(option_value) FROM "
" pg_options_to_table(ftoptions)), ', ') || ')' "
" '(' || pg_catalog.array_to_string(ARRAY(SELECT "
" pg_catalog.quote_ident(option_name) || ' ' || "
" pg_catalog.quote_literal(option_value) FROM "
" pg_catalog.pg_options_to_table(ftoptions)), ', ') || ')' "
" END AS \"%s\",\n"
" d.description AS \"%s\"",
gettext_noop("FDW options"),