Bug#35068 Assertion fails when reading from i_s.tables and there is incorrect merge table

Hide "Table doesn't exist" errors if the table belongs to a merge table.


mysql-test/r/merge.result:
  result fix
mysql-test/t/merge.test:
  test case
sql/sql_base.cc:
  Hide "Table doesn't exist" errors if the table belongs to a merge table.

1 files changed, 15 insertions, 6 deletions

diff --git a/mysql-test/r/merge.result b/mysql-test/r/merge.result
index ef623b343e9..cc05efded02 100644
--- a/mysql-test/r/merge.result
+++ b/mysql-test/r/merge.result
@@ -830,7 +830,7 @@ ERROR HY000: Unable to open underlying table which is differently defined or of
 DROP TABLE t1, t2;
 CREATE TABLE t2(a INT) ENGINE=MERGE UNION=(t3);
 SELECT * FROM t2;
-ERROR 42S02: Table 'test.t3' doesn't exist
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
 DROP TABLE t2;
 CREATE TABLE t1(a INT, b TEXT);
 CREATE TABLE tm1(a TEXT, b INT) ENGINE=MERGE UNION=(t1);
@@ -895,17 +895,19 @@ drop table t2;
 drop table t1;
 CREATE TABLE tm1(a INT) ENGINE=MERGE UNION=(t1, t2);
 SELECT * FROM tm1;
-ERROR 42S02: Table 'test.t1' doesn't exist
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
 CHECK TABLE tm1;
 Table	Op	Msg_type	Msg_text
 test.tm1	check	Error	Table 'test.t1' doesn't exist
+test.tm1	check	Error	Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
 test.tm1	check	error	Corrupt
 CREATE TABLE t1(a INT);
 SELECT * FROM tm1;
-ERROR 42S02: Table 'test.t2' doesn't exist
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
 CHECK TABLE tm1;
 Table	Op	Msg_type	Msg_text
 test.tm1	check	Error	Table 'test.t2' doesn't exist
+test.tm1	check	Error	Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
 test.tm1	check	error	Corrupt
 CREATE TABLE t2(a BLOB);
 SELECT * FROM tm1;
@@ -1199,7 +1201,7 @@ c1
 3
 RENAME TABLE t2 TO t5;
 SELECT * FROM t3 ORDER BY c1;
-ERROR 42S02: Table 'test.t2' doesn't exist
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
 RENAME TABLE t5 TO t2;
 SELECT * FROM t3 ORDER BY c1;
 c1
@@ -1233,7 +1235,7 @@ UNLOCK TABLES;
 # 4. Alter table rename.
 ALTER TABLE t2 RENAME TO t5;
 SELECT * FROM t3 ORDER BY c1;
-ERROR 42S02: Table 'test.t2' doesn't exist
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
 ALTER TABLE t5 RENAME TO t2;
 SELECT * FROM t3 ORDER BY c1;
 c1
@@ -1317,7 +1319,7 @@ LOCK TABLES t1 WRITE, t2 WRITE;
 INSERT INTO t1 VALUES (1);
 DROP TABLE t1;
 SELECT * FROM t2;
-ERROR 42S02: Table 'test.t1' doesn't exist
+ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
 SELECT * FROM t1;
 ERROR 42S02: Table 'test.t1' doesn't exist
 UNLOCK TABLES;
@@ -2006,6 +2008,13 @@ test.t1	optimize	status	OK
 FLUSH TABLES m1, t1;
 UNLOCK TABLES;
 DROP TABLE t1, m1;
+CREATE TABLE tm1 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1) INSERT_METHOD=FIRST;
+SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE
+TABLE_SCHEMA = 'test' and TABLE_NAME='tm1';
+TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	TABLE_TYPE	ENGINE	VERSION	ROW_FORMAT	TABLE_ROWS	AVG_ROW_LENGTH	DATA_LENGTH	MAX_DATA_LENGTH	INDEX_LENGTH	DATA_FREE	AUTO_INCREMENT	CREATE_TIME	UPDATE_TIME	CHECK_TIME	TABLE_COLLATION	CHECKSUM	CREATE_OPTIONS	TABLE_COMMENT
+NULL	test	tm1	BASE TABLE	NULL	NULL	NULL	#	#	#	#	#	#	#	#	#	#	NULL	#	#	Unable to open underlying table which is differently defined or of non-MyISAM ty
+DROP TABLE tm1;
+End of 5.1 tests
 CREATE TABLE t1(C1 INT, C2 INT, KEY C1(C1), KEY C2(C2)) ENGINE=MYISAM;
 CREATE TABLE t2(C1 INT, C2 INT, KEY C1(C1), KEY C2(C2)) ENGINE=MYISAM;
 CREATE TABLE t3(C1 INT, C2 INT, KEY C1(C1), KEY C2(C2)) ENGINE=MYISAM;