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Handle arrays and ranges in pg_upgrade's test for non-upgradable types.

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pg_upgrade needs to check whether certain non-upgradable data types
appear anywhere on-disk in the source cluster.  It knew that it has
to check for these types being contained inside domains and composite
types; but it somehow overlooked that they could be contained in
arrays and ranges, too.  Extend the existing recursive-containment
query to handle those cases.

We probably should have noticed this oversight while working on
commit 0ccfc2822 and follow-ups, but we failed to :-(.  The whole
thing's possibly a bit overdesigned, since we don't really expect
that any of these types will appear on disk; but if we're going to
the effort of doing a recursive search then it's silly not to cover
all the possibilities.

While at it, refactor so that we have only one copy of the search
logic, not three-and-counting.  Also, to keep the branches looking
more alike, back-patch the output wording change of commit 1634d3615.

Back-patch to all supported branches.

Discussion: https://postgr.es/m/31473.1573412838@sss.pgh.pa.us
This commit is contained in:
Tom Lane 2019-11-13 11:35:37 -05:00
parent 34f805c8cf
commit 8e4ef32873
1 changed files with 99 additions and 146 deletions
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245
src/bin/pg_upgrade/version.c
View File

@ -100,27 +100,27 @@ new_9_0_populate_pg_largeobject_metadata(ClusterInfo *cluster, bool check_mode)
/*
* old_9_3_check_for_line_data_type_usage()
* 9.3 -> 9.4
* Fully implement the 'line' data type in 9.4, which previously returned
* "not enabled" by default and was only functionally enabled with a
* compile-time switch; 9.4 "line" has different binary and text
* representation formats; checks tables and indexes.
* check_for_data_type_usage
* Detect whether there are any stored columns depending on the given type
*
* If so, write a report to the given file name, and return true.
*
* We check for the type in tables, matviews, and indexes, but not views;
* there's no storage involved in a view.
*/
void
old_9_3_check_for_line_data_type_usage(ClusterInfo *cluster)
static bool
check_for_data_type_usage(ClusterInfo *cluster, const char *typename,
char *output_path)
{
int dbnum;
FILE *script = NULL;
bool found = false;
char output_path[MAXPGPATH];
prep_status("Checking for incompatible \"line\" data type");
snprintf(output_path, sizeof(output_path), "tables_using_line.txt");
FILE *script = NULL;
int dbnum;
for (dbnum = 0; dbnum < cluster->dbarr.ndbs; dbnum++)
{
DbInfo *active_db = &cluster->dbarr.dbs[dbnum];
PGconn *conn = connectToServer(cluster, active_db->db_name);
PQExpBufferData querybuf;
PGresult *res;
bool db_used = false;
int ntups;
@ -128,50 +128,68 @@ old_9_3_check_for_line_data_type_usage(ClusterInfo *cluster)
int i_nspname,
i_relname,
i_attname;
DbInfo *active_db = &cluster->dbarr.dbs[dbnum];
PGconn *conn = connectToServer(cluster, active_db->db_name);
/*
* The pg_catalog.line type may be wrapped in a domain or composite
* type, or both (9.3 did not allow domains on composite types, but
* there may be multi-level composite type). To detect these cases
* we need a recursive CTE.
* The type of interest might be wrapped in a domain, array,
* composite, or range, and these container types can be nested (to
* varying extents depending on server version, but that's not of
* concern here). To handle all these cases we need a recursive CTE.
*/
res = executeQueryOrDie(conn,
"WITH RECURSIVE oids AS ( "
/* the pg_catalog.line type itself */
" SELECT 'pg_catalog.line'::pg_catalog.regtype AS oid "
" UNION ALL "
" SELECT * FROM ( "
/* domains on the type */
" WITH x AS (SELECT oid FROM oids) "
" SELECT t.oid FROM pg_catalog.pg_type t, x WHERE typbasetype = x.oid AND typtype = 'd' "
" UNION "
/* composite types containing the type */
" SELECT t.oid FROM pg_catalog.pg_type t, pg_catalog.pg_class c, pg_catalog.pg_attribute a, x "
" WHERE t.typtype = 'c' AND "
" t.oid = c.reltype AND "
" c.oid = a.attrelid AND "
" NOT a.attisdropped AND "
" a.atttypid = x.oid "
" ) foo "
") "
"SELECT n.nspname, c.relname, a.attname "
"FROM pg_catalog.pg_class c, "
" pg_catalog.pg_namespace n, "
" pg_catalog.pg_attribute a "
"WHERE c.oid = a.attrelid AND "
" NOT a.attisdropped AND "
" a.atttypid IN (SELECT oid FROM oids) AND "
" c.relkind IN ("
CppAsString2(RELKIND_RELATION) ", "
CppAsString2(RELKIND_MATVIEW) ", "
CppAsString2(RELKIND_INDEX) ") AND "
" c.relnamespace = n.oid AND "
initPQExpBuffer(&querybuf);
appendPQExpBuffer(&querybuf,
"WITH RECURSIVE oids AS ( "
/* the target type itself */
" SELECT '%s'::pg_catalog.regtype AS oid "
" UNION ALL "
" SELECT * FROM ( "
/* inner WITH because we can only reference the CTE once */
" WITH x AS (SELECT oid FROM oids) "
/* domains on any type selected so far */
" SELECT t.oid FROM pg_catalog.pg_type t, x WHERE typbasetype = x.oid AND typtype = 'd' "
" UNION ALL "
/* arrays over any type selected so far */
" SELECT t.oid FROM pg_catalog.pg_type t, x WHERE typelem = x.oid AND typtype = 'b' "
" UNION ALL "
/* composite types containing any type selected so far */
" SELECT t.oid FROM pg_catalog.pg_type t, pg_catalog.pg_class c, pg_catalog.pg_attribute a, x "
" WHERE t.typtype = 'c' AND "
" t.oid = c.reltype AND "
" c.oid = a.attrelid AND "
" NOT a.attisdropped AND "
" a.atttypid = x.oid ",
typename);
/* Ranges came in in 9.2 */
if (GET_MAJOR_VERSION(cluster->major_version) >= 902)
appendPQExpBuffer(&querybuf,
" UNION ALL "
/* ranges containing any type selected so far */
" SELECT t.oid FROM pg_catalog.pg_type t, pg_catalog.pg_range r, x "
" WHERE t.typtype = 'r' AND r.rngtypid = t.oid AND r.rngsubtype = x.oid");
appendPQExpBuffer(&querybuf,
" ) foo "
") "
/* now look for stored columns of any such type */
"SELECT n.nspname, c.relname, a.attname "
"FROM pg_catalog.pg_class c, "
" pg_catalog.pg_namespace n, "
" pg_catalog.pg_attribute a "
"WHERE c.oid = a.attrelid AND "
" NOT a.attisdropped AND "
" a.atttypid IN (SELECT oid FROM oids) AND "
" c.relkind IN ("
CppAsString2(RELKIND_RELATION) ", "
CppAsString2(RELKIND_MATVIEW) ", "
CppAsString2(RELKIND_INDEX) ") AND "
" c.relnamespace = n.oid AND "
/* exclude possible orphaned temp tables */
" n.nspname !~ '^pg_temp_' AND "
" n.nspname !~ '^pg_toast_temp_' AND "
" n.nspname NOT IN ('pg_catalog', 'information_schema')");
" n.nspname !~ '^pg_temp_' AND "
" n.nspname !~ '^pg_toast_temp_' AND "
/* exclude system catalogs, too */
" n.nspname NOT IN ('pg_catalog', 'information_schema')");
res = executeQueryOrDie(conn, "%s", querybuf.data);
ntups = PQntuples(res);
i_nspname = PQfnumber(res, "nspname");
@ -185,7 +203,7 @@ old_9_3_check_for_line_data_type_usage(ClusterInfo *cluster)
strerror(errno));
if (!db_used)
{
fprintf(script, "Database: %s\n", active_db->db_name);
fprintf(script, "In database: %s\n", active_db->db_name);
db_used = true;
}
fprintf(script, " %s.%s.%s\n",
@ -196,13 +214,36 @@ old_9_3_check_for_line_data_type_usage(ClusterInfo *cluster)
PQclear(res);
termPQExpBuffer(&querybuf);
PQfinish(conn);
}
if (script)
fclose(script);
if (found)
return found;
}
/*
* old_9_3_check_for_line_data_type_usage()
* 9.3 -> 9.4
* Fully implement the 'line' data type in 9.4, which previously returned
* "not enabled" by default and was only functionally enabled with a
* compile-time switch; as of 9.4 "line" has a different on-disk
* representation format.
*/
void
old_9_3_check_for_line_data_type_usage(ClusterInfo *cluster)
{
char output_path[MAXPGPATH];
prep_status("Checking for incompatible \"line\" data type");
snprintf(output_path, sizeof(output_path), "tables_using_line.txt");
if (check_for_data_type_usage(cluster, "pg_catalog.line", output_path))
{
pg_log(PG_REPORT, "fatal\n");
pg_fatal("Your installation contains the \"line\" data type in user tables. This\n"
@ -229,105 +270,17 @@ old_9_3_check_for_line_data_type_usage(ClusterInfo *cluster)
* mid-upgrade. Worse, if there's a matview with such a column, the
* DDL reload will silently change it to "text" which won't match the
* on-disk storage (which is like "cstring"). So we *must* reject that.
* Also check composite types and domains on the "unknwown" type (even
* combinations of both), in case they are used for table columns.
* We needn't check indexes, because "unknown" has no opclasses.
*/
void
old_9_6_check_for_unknown_data_type_usage(ClusterInfo *cluster)
{
int dbnum;
FILE *script = NULL;
bool found = false;
char output_path[MAXPGPATH];
prep_status("Checking for invalid \"unknown\" user columns");
snprintf(output_path, sizeof(output_path), "tables_using_unknown.txt");
for (dbnum = 0; dbnum < cluster->dbarr.ndbs; dbnum++)
{
PGresult *res;
bool db_used = false;
int ntups;
int rowno;
int i_nspname,
i_relname,
i_attname;
DbInfo *active_db = &cluster->dbarr.dbs[dbnum];
PGconn *conn = connectToServer(cluster, active_db->db_name);
/*
* The pg_catalog.unknown type may be wrapped in a domain or composite
* type, or both (9.3 did not allow domains on composite types, but
* there may be multi-level composite type). To detect these cases
* we need a recursive CTE.
*/
res = executeQueryOrDie(conn,
"WITH RECURSIVE oids AS ( "
/* the pg_catalog.unknown type itself */
" SELECT 'pg_catalog.unknown'::pg_catalog.regtype AS oid "
" UNION ALL "
" SELECT * FROM ( "
/* domains on the type */
" WITH x AS (SELECT oid FROM oids) "
" SELECT t.oid FROM pg_catalog.pg_type t, x WHERE typbasetype = x.oid AND typtype = 'd' "
" UNION "
/* composite types containing the type */
" SELECT t.oid FROM pg_catalog.pg_type t, pg_catalog.pg_class c, pg_catalog.pg_attribute a, x "
" WHERE t.typtype = 'c' AND "
" t.oid = c.reltype AND "
" c.oid = a.attrelid AND "
" NOT a.attisdropped AND "
" a.atttypid = x.oid "
" ) foo "
") "
"SELECT n.nspname, c.relname, a.attname "
"FROM pg_catalog.pg_class c, "
" pg_catalog.pg_namespace n, "
" pg_catalog.pg_attribute a "
"WHERE c.oid = a.attrelid AND "
" NOT a.attisdropped AND "
" a.atttypid IN (SELECT oid FROM oids) AND "
" c.relkind IN ("
CppAsString2(RELKIND_RELATION) ", "
CppAsString2(RELKIND_MATVIEW) ") AND "
" c.relnamespace = n.oid AND "
/* exclude possible orphaned temp tables */
" n.nspname !~ '^pg_temp_' AND "
" n.nspname !~ '^pg_toast_temp_' AND "
" n.nspname NOT IN ('pg_catalog', 'information_schema')");
ntups = PQntuples(res);
i_nspname = PQfnumber(res, "nspname");
i_relname = PQfnumber(res, "relname");
i_attname = PQfnumber(res, "attname");
for (rowno = 0; rowno < ntups; rowno++)
{
found = true;
if (script == NULL && (script = fopen_priv(output_path, "w")) == NULL)
pg_fatal("could not open file \"%s\": %s\n", output_path,
strerror(errno));
if (!db_used)
{
fprintf(script, "Database: %s\n", active_db->db_name);
db_used = true;
}
fprintf(script, " %s.%s.%s\n",
PQgetvalue(res, rowno, i_nspname),
PQgetvalue(res, rowno, i_relname),
PQgetvalue(res, rowno, i_attname));
}
PQclear(res);
PQfinish(conn);
}
if (script)
fclose(script);
if (found)
if (check_for_data_type_usage(cluster, "pg_catalog.unknown", output_path))
{
pg_log(PG_REPORT, "fatal\n");
pg_fatal("Your installation contains the \"unknown\" data type in user tables. This\n"