3 files changed, 115 insertions, 11 deletions
diff --git a/mysql-test/suite/innodb/r/alter_candidate_key.result b/mysql-test/suite/innodb/r/alter_candidate_key.result
new file mode 100644
index 00000000000..23989e0da5f
--- /dev/null
+++ b/mysql-test/suite/innodb/r/alter_candidate_key.result
@@ -0,0 +1,114 @@
+CREATE TABLE t1 (f1 INT NOT NULL, f2 INT NOT NULL,
+UNIQUE KEY uidx2(f1,f2),
+UNIQUE KEY uidx1(f2)) ENGINE=InnoDB;
+INSERT INTO t1 VALUES(1, 1);
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `f1` int(11) NOT NULL,
+  `f2` int(11) NOT NULL,
+  UNIQUE KEY `uidx2` (`f1`,`f2`),
+  UNIQUE KEY `uidx1` (`f2`)
+) ENGINE=InnoDB DEFAULT CHARSET=latin1
+SET DEBUG_SYNC = 'innodb_inplace_alter_table_enter
+		  SIGNAL conc_dml WAIT_FOR go_ahead';
+ALTER TABLE t1 CHANGE COLUMN f1 f11 INT, ALGORITHM=INPLACE;
+connect  con1,localhost,root,,;
+SET DEBUG_SYNC = 'now WAIT_FOR conc_dml';
+DELETE FROM t1;
+SET DEBUG_SYNC = 'now SIGNAL go_ahead';
+connection default;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `f11` int(11) DEFAULT NULL,
+  `f2` int(11) NOT NULL,
+  UNIQUE KEY `uidx1` (`f2`),
+  UNIQUE KEY `uidx2` (`f11`,`f2`)
+) ENGINE=InnoDB DEFAULT CHARSET=latin1
+CHECK TABLE t1;
+Table	Op	Msg_type	Msg_text
+test.t1	check	status	OK
+DROP TABLE t1;
+CREATE TABLE t1(f1 INT, f2 INT,
+PRIMARY KEY(f1, f2),
+UNIQUE INDEX uidx2 (f1, f2),
+UNIQUE INDEX uidx1 (f2))ENGINE=InnoDB;
+ALTER TABLE t1 DROP PRIMARY KEY;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `f1` int(11) NOT NULL,
+  `f2` int(11) NOT NULL,
+  UNIQUE KEY `uidx2` (`f1`,`f2`),
+  UNIQUE KEY `uidx1` (`f2`)
+) ENGINE=InnoDB DEFAULT CHARSET=latin1
+SET DEBUG_SYNC = 'innodb_inplace_alter_table_enter
+		  SIGNAL conc_dml WAIT_FOR go_ahead';
+ALTER TABLE t1 CHANGE COLUMN f1 f11 INT, ALGORITHM=INPLACE;
+connection con1;
+SET DEBUG_SYNC = 'now WAIT_FOR conc_dml';
+INSERT INTO t1 VALUES(1, 1), (1, 1);
+ERROR 23000: Duplicate entry '1-1' for key 'uidx2'
+SET DEBUG_SYNC = 'now SIGNAL go_ahead';
+connection default;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `f11` int(11) DEFAULT NULL,
+  `f2` int(11) NOT NULL,
+  UNIQUE KEY `uidx1` (`f2`),
+  UNIQUE KEY `uidx2` (`f11`,`f2`)
+) ENGINE=InnoDB DEFAULT CHARSET=latin1
+CHECK TABLE t1;
+Table	Op	Msg_type	Msg_text
+test.t1	check	status	OK
+DROP TABLE t1;
+SET SQL_MODE= strict_trans_tables;
+CREATE TABLE t1(a INT UNIQUE) ENGINE=InnoDB;
+SET DEBUG_SYNC='row_log_table_apply1_before SIGNAL dml WAIT_FOR dml_done';
+ALTER TABLE t1 MODIFY COLUMN a INT NOT NULL;
+connection con1;
+SET DEBUG_SYNC='now WAIT_FOR dml';
+BEGIN;
+INSERT INTO t1 SET a=NULL;
+ROLLBACK;
+set DEBUG_SYNC='now SIGNAL dml_done';
+connection default;
+ERROR 22004: Invalid use of NULL value
+DROP TABLE t1;
+disconnect con1;
+SET DEBUG_SYNC="RESET";
+SET SQL_MODE=DEFAULT;
+CREATE TABLE t1(f1 INT NOT NULL, f2 INT NOT NULL, PRIMARY KEY(f1, f2),
+UNIQUE KEY(f2))ENGINE=InnoDB;
+ALTER TABLE t1 DROP PRIMARY KEY;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `f1` int(11) NOT NULL,
+  `f2` int(11) NOT NULL,
+  UNIQUE KEY `f2` (`f2`)
+) ENGINE=InnoDB DEFAULT CHARSET=latin1
+DROP TABLE t1;
+CREATE TABLE t1(f1 INT NOT NULL, f2 INT NOT NULL,
+UNIQUE KEY(f2), UNIQUE KEY(f2))ENGINE=InnoDB;
+Warnings:
+Note	1831	Duplicate index `f2_2`. This is deprecated and will be disallowed in a future release
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `f1` int(11) NOT NULL,
+  `f2` int(11) NOT NULL,
+  UNIQUE KEY `f2` (`f2`),
+  UNIQUE KEY `f2_2` (`f2`)
+) ENGINE=InnoDB DEFAULT CHARSET=latin1
+ALTER TABLE t1 DROP INDEX f2, ALGORITHM=INPLACE;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `f1` int(11) NOT NULL,
+  `f2` int(11) NOT NULL,
+  UNIQUE KEY `f2_2` (`f2`)
+) ENGINE=InnoDB DEFAULT CHARSET=latin1
+DROP TABLE t1;
diff --git a/mysql-test/suite/innodb/r/innodb-index.result b/mysql-test/suite/innodb/r/innodb-index.result
index 734cc41a8ea..5f4efbfe6f5 100644
--- a/mysql-test/suite/innodb/r/innodb-index.result
+++ b/mysql-test/suite/innodb/r/innodb-index.result
@@ -1567,6 +1567,7 @@ create table t1(f1 int not null, f2 int not null,
 primary key (f1), unique key(f1, f2))engine=innodb;
 insert into t1 values(1,3), (2,2);
 alter table t1 drop primary key, lock=none;
+alter table t1 drop index f1, lock=none;
 ERROR 0A000: LOCK=NONE is not supported. Reason: Dropping a primary key is not allowed without also adding a new primary key. Try LOCK=SHARED
 drop table t1;
 #
diff --git a/mysql-test/suite/innodb/r/innodb-table-online.result b/mysql-test/suite/innodb/r/innodb-table-online.result
index 09ec3bbc252..0b36913dbb1 100644
--- a/mysql-test/suite/innodb/r/innodb-table-online.result
+++ b/mysql-test/suite/innodb/r/innodb-table-online.result
@@ -99,17 +99,6 @@ t1	CREATE TABLE `t1` (
   UNIQUE KEY `c2` (`c2`),
   UNIQUE KEY `c2_2` (`c2`)
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=COMPACT
-ALTER TABLE t1 DROP INDEX c2, ALGORITHM = INPLACE;
-ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Dropping a primary key is not allowed without also adding a new primary key. Try ALGORITHM=COPY
-SHOW CREATE TABLE t1;
-Table	Create Table
-t1	CREATE TABLE `t1` (
-  `c1` int(11) NOT NULL,
-  `c2` int(11) NOT NULL,
-  `c3` char(255) NOT NULL,
-  UNIQUE KEY `c2` (`c2`),
-  UNIQUE KEY `c2_2` (`c2`)
-) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=COMPACT
 ALTER TABLE t1 DROP INDEX c2, ADD PRIMARY KEY(c1);
 # session default
 connection default;