MDEV-8948 ALTER ... INPLACE does work for BINARY, BLOB

mysql-test/r/alter_table_online.result

@@ -65,3 +65,117 @@ create table t3 (a int not null primary key, b int, c varchar(80)) engine=merge
 alter online table t3 union=(t1,t2);
 ERROR 0A000: LOCK=NONE/SHARED is not supported for this operation. Try LOCK=EXCLUSIVE.
 drop table t1,t2,t3;
+#
+# MDEV-8948 ALTER ... INPLACE does work for BINARY, BLOB
+#
+CREATE TABLE t1 (a BINARY(10));
+ALTER TABLE t1 MODIFY a BINARY(10), ALGORITHM=INPLACE;
+DROP TABLE t1;
+CREATE TABLE t1 (a VARBINARY(10));
+ALTER TABLE t1 MODIFY a VARBINARY(10), ALGORITHM=INPLACE;
+DROP TABLE t1;
+CREATE TABLE t1 (a TINYBLOB);
+ALTER TABLE t1 MODIFY a TINYBLOB, ALGORITHM=INPLACE;
+DROP TABLE t1;
+CREATE TABLE t1 (a MEDIUMBLOB);
+ALTER TABLE t1 MODIFY a MEDIUMBLOB, ALGORITHM=INPLACE;
+DROP TABLE t1;
+CREATE TABLE t1 (a BLOB);
+ALTER TABLE t1 MODIFY a BLOB, ALGORITHM=INPLACE;
+DROP TABLE t1;
+CREATE TABLE t1 (a LONGBLOB);
+ALTER TABLE t1 MODIFY a LONGBLOB, ALGORITHM=INPLACE;
+DROP TABLE t1;
+CREATE TABLE t1 (a CHAR(10));
+ALTER TABLE t1 MODIFY a CHAR(10), ALGORITHM=INPLACE;
+DROP TABLE t1;
+CREATE TABLE t1 (a VARCHAR(10));
+ALTER TABLE t1 MODIFY a VARCHAR(10), ALGORITHM=INPLACE;
+DROP TABLE t1;
+CREATE TABLE t1 (a TINYTEXT);
+ALTER TABLE t1 MODIFY a TINYTEXT, ALGORITHM=INPLACE;
+DROP TABLE t1;
+CREATE TABLE t1 (a MEDIUMTEXT);
+ALTER TABLE t1 MODIFY a MEDIUMTEXT, ALGORITHM=INPLACE;
+DROP TABLE t1;
+CREATE TABLE t1 (a TEXT);
+ALTER TABLE t1 MODIFY a TEXT, ALGORITHM=INPLACE;
+DROP TABLE t1;
+CREATE TABLE t1 (a LONGTEXT);
+ALTER TABLE t1 MODIFY a LONGTEXT, ALGORITHM=INPLACE;
+DROP TABLE t1;
+CREATE TABLE t1 (a CHAR(10));
+ALTER TABLE t1 MODIFY a CHAR(10) COLLATE latin1_bin, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a VARCHAR(10));
+ALTER TABLE t1 MODIFY a VARCHAR(10) COLLATE latin1_bin, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a TINYTEXT);
+ALTER TABLE t1 MODIFY a TINYTEXT COLLATE latin1_bin, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a MEDIUMTEXT);
+ALTER TABLE t1 MODIFY a MEDIUMTEXT COLLATE latin1_bin, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a TEXT);
+ALTER TABLE t1 MODIFY a TEXT COLLATE latin1_bin, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a LONGTEXT);
+ALTER TABLE t1 MODIFY a LONGTEXT COLLATE latin1_bin, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a CHAR(10) COLLATE latin1_bin);
+ALTER TABLE t1 MODIFY a CHAR(10) COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a VARCHAR(10) COLLATE latin1_bin);
+ALTER TABLE t1 MODIFY a VARCHAR(10) COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a TINYTEXT COLLATE latin1_bin);
+ALTER TABLE t1 MODIFY a TINYTEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a MEDIUMTEXT COLLATE latin1_bin);
+ALTER TABLE t1 MODIFY a MEDIUMTEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a TEXT COLLATE latin1_bin);
+ALTER TABLE t1 MODIFY a TEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a LONGTEXT COLLATE latin1_bin);
+ALTER TABLE t1 MODIFY a LONGTEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a CHAR(10) COLLATE latin1_general_ci);
+ALTER TABLE t1 MODIFY a CHAR(10) COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a VARCHAR(10) COLLATE latin1_general_ci);
+ALTER TABLE t1 MODIFY a VARCHAR(10) COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a TINYTEXT COLLATE latin1_general_ci);
+ALTER TABLE t1 MODIFY a TINYTEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a MEDIUMTEXT COLLATE latin1_general_ci);
+ALTER TABLE t1 MODIFY a MEDIUMTEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a TEXT COLLATE latin1_general_ci);
+ALTER TABLE t1 MODIFY a TEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a LONGTEXT COLLATE latin1_general_ci);
+ALTER TABLE t1 MODIFY a LONGTEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+#
+# End of MDEV-8948 ALTER ... INPLACE does work for BINARY, BLOB
+#

mysql-test/r/gis-alter_table_online.result

+#
+# Start of 10.1 tests
+#
+#
+# MDEV-8948 ALTER ... INPLACE does work for BINARY, BLOB
+#
+CREATE TABLE t1 (a TINYBLOB);
+ALTER TABLE t1 MODIFY a GEOMETRY, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a MEDIUMBLOB);
+ALTER TABLE t1 MODIFY a GEOMETRY, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a BLOB);
+ALTER TABLE t1 MODIFY a GEOMETRY, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a LONGBLOB);
+ALTER TABLE t1 MODIFY a GEOMETRY, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a GEOMETRY);
+ALTER TABLE t1 MODIFY a TINYBLOB, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a GEOMETRY);
+ALTER TABLE t1 MODIFY a MEDIUMBLOB, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a GEOMETRY);
+ALTER TABLE t1 MODIFY a BLOB, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a GEOMETRY);
+ALTER TABLE t1 MODIFY a LONGBLOB, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a GEOMETRY);
+ALTER TABLE t1 MODIFY a POLYGON, ALGORITHM=INPLACE;
+ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY.
+DROP TABLE t1;
+CREATE TABLE t1 (a POLYGON);
+ALTER TABLE t1 MODIFY a GEOMETRY, ALGORITHM=INPLACE;
+DROP TABLE t1;
+CREATE TABLE t1 (a POLYGON);
+ALTER TABLE t1 MODIFY a POLYGON, ALGORITHM=INPLACE;
+DROP TABLE t1;
+#
+# End of 10.1 tests
+#

mysql-test/t/alter_table_online.test

@@ -104,3 +104,170 @@ create table t3 (a int not null primary key, b int, c varchar(80)) engine=merge
 --error ER_ALTER_OPERATION_NOT_SUPPORTED
 alter online table t3 union=(t1,t2);
 drop table t1,t2,t3;
+
+--echo #
+--echo # MDEV-8948 ALTER ... INPLACE does work for BINARY, BLOB
+--echo #
+#
+# ALTER to the same [VAR]BINARY type
+#
+CREATE TABLE t1 (a BINARY(10));
+ALTER TABLE t1 MODIFY a BINARY(10), ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a VARBINARY(10));
+ALTER TABLE t1 MODIFY a VARBINARY(10), ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+#
+# ALTER to the same BLOB variant
+#
+CREATE TABLE t1 (a TINYBLOB);
+ALTER TABLE t1 MODIFY a TINYBLOB, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a MEDIUMBLOB);
+ALTER TABLE t1 MODIFY a MEDIUMBLOB, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a BLOB);
+ALTER TABLE t1 MODIFY a BLOB, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a LONGBLOB);
+ALTER TABLE t1 MODIFY a LONGBLOB, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+#
+# ALTER to the same [VAR]CHAR type
+#
+CREATE TABLE t1 (a CHAR(10));
+ALTER TABLE t1 MODIFY a CHAR(10), ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a VARCHAR(10));
+ALTER TABLE t1 MODIFY a VARCHAR(10), ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+
+#
+# ALTER to the same TEXT variant
+#
+CREATE TABLE t1 (a TINYTEXT);
+ALTER TABLE t1 MODIFY a TINYTEXT, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a MEDIUMTEXT);
+ALTER TABLE t1 MODIFY a MEDIUMTEXT, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a TEXT);
+ALTER TABLE t1 MODIFY a TEXT, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a LONGTEXT);
+ALTER TABLE t1 MODIFY a LONGTEXT, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+#
+# ALTER from a non-binary to a binary collation
+#
+CREATE TABLE t1 (a CHAR(10));
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a CHAR(10) COLLATE latin1_bin, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a VARCHAR(10));
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a VARCHAR(10) COLLATE latin1_bin, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a TINYTEXT);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a TINYTEXT COLLATE latin1_bin, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a MEDIUMTEXT);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a MEDIUMTEXT COLLATE latin1_bin, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a TEXT);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a TEXT COLLATE latin1_bin, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a LONGTEXT);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a LONGTEXT COLLATE latin1_bin, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+#
+# ALTER from a binary to a non-binary collation
+#
+CREATE TABLE t1 (a CHAR(10) COLLATE latin1_bin);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a CHAR(10) COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a VARCHAR(10) COLLATE latin1_bin);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a VARCHAR(10) COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a TINYTEXT COLLATE latin1_bin);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a TINYTEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a MEDIUMTEXT COLLATE latin1_bin);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a MEDIUMTEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a TEXT COLLATE latin1_bin);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a TEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a LONGTEXT COLLATE latin1_bin);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a LONGTEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+#
+# ALTER from a non-binary collation to another non-binary collation
+#
+CREATE TABLE t1 (a CHAR(10) COLLATE latin1_general_ci);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a CHAR(10) COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a VARCHAR(10) COLLATE latin1_general_ci);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a VARCHAR(10) COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a TINYTEXT COLLATE latin1_general_ci);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a TINYTEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a MEDIUMTEXT COLLATE latin1_general_ci);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a MEDIUMTEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a TEXT COLLATE latin1_general_ci);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a TEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a LONGTEXT COLLATE latin1_general_ci);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a LONGTEXT COLLATE latin1_swedish_ci, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+--echo #
+--echo # End of MDEV-8948 ALTER ... INPLACE does work for BINARY, BLOB
+--echo #

mysql-test/t/gis-alter_table_online.test

+--source include/have_innodb.inc
+--source include/have_geometry.inc
+
+--echo #
+--echo # Start of 10.1 tests
+--echo #
+
+--echo #
+--echo # MDEV-8948 ALTER ... INPLACE does work for BINARY, BLOB
+--echo #
+
+#
+# Blob variants to GEOMETRY
+#
+CREATE TABLE t1 (a TINYBLOB);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a GEOMETRY, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a MEDIUMBLOB);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a GEOMETRY, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a BLOB);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a GEOMETRY, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a LONGBLOB);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a GEOMETRY, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+#
+# GEOMETRY to BLOB variants
+#
+
+CREATE TABLE t1 (a GEOMETRY);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a TINYBLOB, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a GEOMETRY);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a MEDIUMBLOB, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a GEOMETRY);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a BLOB, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a GEOMETRY);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a LONGBLOB, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+#
+# Different GEOMETRY types
+#
+
+# Can't do INPLACE from a supertype to a subtype
+CREATE TABLE t1 (a GEOMETRY);
+--error ER_ALTER_OPERATION_NOT_SUPPORTED
+ALTER TABLE t1 MODIFY a POLYGON, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+# Ok to do INPLACE from a subtype to a supertype
+CREATE TABLE t1 (a POLYGON);
+ALTER TABLE t1 MODIFY a GEOMETRY, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+# Ok to do INPLACE for two equal geometry subtypes
+CREATE TABLE t1 (a POLYGON);
+ALTER TABLE t1 MODIFY a POLYGON, ALGORITHM=INPLACE;
+DROP TABLE t1;
+
+
+--echo #
+--echo # End of 10.1 tests
+--echo #

sql/field.cc

@@ -6887,9 +6887,6 @@ uint Field::is_equal(Create_field *new_field)
 
 uint Field_str::is_equal(Create_field *new_field)
 {
-  if (field_flags_are_binary() != new_field->field_flags_are_binary())
-    return 0;
-
   return ((new_field->sql_type == real_type()) &&
 	  new_field->charset == field_charset &&
 	  new_field->length == max_display_length());
@@ -8263,9 +8260,6 @@ uint Field_blob::max_packed_col_length(uint max_length)
 
 uint Field_blob::is_equal(Create_field *new_field)
 {
-  if (field_flags_are_binary() != new_field->field_flags_are_binary())
-    return 0;
-
   return ((new_field->sql_type == get_blob_type_from_length(max_data_length()))
           && new_field->charset == field_charset &&
           new_field->pack_length == pack_length());
@@ -8485,6 +8479,19 @@ Field::geometry_type Field_geom::geometry_type_merge(geometry_type a,
 }
 
 
+uint Field_geom::is_equal(Create_field *new_field)
+{
+  return new_field->sql_type == MYSQL_TYPE_GEOMETRY &&
+         /*
+           - Allow ALTER..INPLACE to supertype (GEOMETRY),
+             e.g. POINT to GEOMETRY or POLYGON to GEOMETRY.
+           - Allow ALTER..INPLACE to the same geometry type: POINT -> POINT
+         */
+         (new_field->geom_type == geom_type ||
+          new_field->geom_type == GEOM_GEOMETRY);
+}
+
+
 bool Field_geom::can_optimize_range(const Item_bool_func *cond,
                                     const Item *item,
                                     bool is_eq_func) const
@@ -8896,8 +8903,7 @@ uint Field_enum::is_equal(Create_field *new_field)
     The fields are compatible if they have the same flags,
     type, charset and have the same underlying length.
   */
-  if (new_field->field_flags_are_binary() != field_flags_are_binary() ||
-      new_field->sql_type != real_type() ||
+  if (new_field->sql_type != real_type() ||
       new_field->charset != field_charset ||
       new_field->pack_length != pack_length())
     return IS_EQUAL_NO;

sql/field.h

@@ -1448,10 +1448,6 @@ protected:
   const uchar *unpack_int64(uchar* to, const uchar *from,  const uchar *from_end)
   { return unpack_int(to, from, from_end, 8); }
 
-  bool field_flags_are_binary()
-  {
-    return (flags & (BINCMP_FLAG | BINARY_FLAG)) != 0;
-  }
   double pos_in_interval_val_real(Field *min, Field *max);
   double pos_in_interval_val_str(Field *min, Field *max, uint data_offset);
 };
@@ -3130,6 +3126,7 @@ public:
                                   const Item *item,
                                   bool is_eq_func) const;
   void sql_type(String &str) const;
+  uint is_equal(Create_field *new_field);
   int  store(const char *to, uint length, CHARSET_INFO *charset);
   int  store(double nr);
   int  store(longlong nr, bool unsigned_val);
@@ -3503,11 +3500,6 @@ public:
 
   bool check(THD *thd);
 
-  bool field_flags_are_binary()
-  {
-    return (flags & (BINCMP_FLAG | BINARY_FLAG)) != 0;
-  }
-
   ha_storage_media field_storage_type() const
   {
     return (ha_storage_media)