MDEV-19236 Improve error message for ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_COLUMN_TYPE

remove a sometimes misleading word INPLACE from error message

mysql-test/main/alter_table_errors.result

 create table t (a int, v int as (a)) engine=innodb;
 alter table t change column a b tinyint, algorithm=inplace;
-ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type INPLACE. Try ALGORITHM=COPY
+ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
 show create table t;
 Table	Create Table
 t	CREATE TABLE `t` (

mysql-test/main/check_constraint_innodb.result

@@ -2,7 +2,7 @@ create table t1 (a int, b smallint) engine=innodb;
 connect con1,localhost,root,,test;
 alter table t1 add constraint check (b < 8);
 alter table t1 modify column b int, algorithm=inplace;
-ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type INPLACE. Try ALGORITHM=COPY
+ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
 connection default;
 alter table t1 add primary key (a);
 drop table t1;

mysql-test/suite/innodb/r/innodb-alter-timestamp.result

@@ -8,7 +8,7 @@ ALGORITHM=COPY;
 ERROR 01000: Data truncated for column 'i1' at row 1
 ALTER TABLE t1 CHANGE i1 id INT UNSIGNED NOT NULL AUTO_INCREMENT,
 ADD PRIMARY KEY(id), ALGORITHM=INPLACE;
-ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type INPLACE. Try ALGORITHM=COPY
+ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
 ALTER IGNORE TABLE t1 ADD PRIMARY KEY(i1), ALGORITHM=INPLACE;
 ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Creating unique indexes with IGNORE requires COPY algorithm to remove duplicate rows. Try ALGORITHM=COPY
 SET @old_sql_mode = @@sql_mode;

mysql-test/suite/innodb/r/innodb-alter.result

@@ -513,7 +513,7 @@ ERROR 42000: Incorrect column name 'FTS_DOC_ID'
 ALTER TABLE t1o ADD FULLTEXT INDEX(ct),
 CHANGE c1 FTS_DOC_ID BIGINT UNSIGNED NOT NULL,
 ALGORITHM=INPLACE;
-ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type INPLACE. Try ALGORITHM=COPY
+ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
 CREATE TABLE t1n LIKE t1o;
 ALTER TABLE t1n ADD FULLTEXT INDEX(ct);
 ALTER TABLE t1n CHANGE c1 Fts_DOC_ID INT, ALGORITHM=INPLACE;
@@ -586,7 +586,7 @@ t1n	CREATE TABLE `t1n` (
 DROP TABLE t1n;
 ALTER TABLE t1o MODIFY c1 BIGINT UNSIGNED NOT NULL, DROP INDEX ct,
 ALGORITHM=INPLACE;
-ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type INPLACE. Try ALGORITHM=COPY
+ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
 ALTER TABLE t1o MODIFY c1 BIGINT UNSIGNED NOT NULL, DROP INDEX ct;
 ALTER TABLE t1o CHANGE c1 FTS_DOC_ID BIGINT UNSIGNED NOT NULL,
 ALGORITHM=INPLACE;

mysql-test/suite/innodb/r/innodb-wl5980-alter.result

@@ -781,7 +781,7 @@ ERROR 42000: Incorrect column name 'FTS_Doc_ID'
 ALTER TABLE t1o ADD FULLTEXT INDEX(ct),
 CHANGE c1 FTS_DOC_ID BIGINT UNSIGNED NOT NULL,
 ALGORITHM=INPLACE;
-ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type INPLACE. Try ALGORITHM=COPY
+ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
 CREATE TABLE t1n LIKE t1o;
 ALTER TABLE t1n ADD FULLTEXT INDEX(ct);
 ### files in MYSQL_DATA_DIR/test

mysql-test/suite/storage_engine/alter_table_online.result

@@ -24,7 +24,7 @@ CREATE TABLE t1 (a <INT_COLUMN>, b <INT_COLUMN>, c <CHAR_COLUMN>) ENGINE=<STORAG
 INSERT INTO t1 (a,b,c) VALUES (1,100,'a'),(2,200,'b'),(3,300,'c');
 ALTER ONLINE TABLE t1 DROP COLUMN b, ADD b <INT_COLUMN>;
 ALTER ONLINE TABLE t1 MODIFY b BIGINT <CUSTOM_COL_OPTIONS>;
-ERROR 0A000: LOCK=NONE is not supported. Reason: Cannot change column type INPLACE. Try LOCK=SHARED.
+ERROR 0A000: LOCK=NONE is not supported. Reason: Cannot change column type. Try LOCK=SHARED.
 ALTER ONLINE TABLE t1 ENGINE=MEMORY;
 ERROR 0A000: LOCK=NONE is not supported. Reason: COPY algorithm requires a lock. Try LOCK=SHARED.
 DROP TABLE t1;

sql/share/errmsg-utf8.txt

@@ -7011,7 +7011,7 @@ ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_FK_RENAME
   eng "Columns participating in a foreign key are renamed"
 
 ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_COLUMN_TYPE
-  eng "Cannot change column type INPLACE"
+  eng "Cannot change column type"
 
 ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_FK_CHECK
   eng "Adding foreign keys needs foreign_key_checks=OFF"

storage/myisam/mysql-test/storage_engine/alter_table_online.rdiff

@@ -14,7 +14,7 @@
 +# Also, this problem may cause a chain effect (more errors of different kinds in the test).
 +# -------------------------------------------
  ALTER ONLINE TABLE t1 MODIFY b BIGINT <CUSTOM_COL_OPTIONS>;
--ERROR 0A000: LOCK=NONE is not supported. Reason: Cannot change column type INPLACE. Try LOCK=SHARED.
+-ERROR 0A000: LOCK=NONE is not supported. Reason: Cannot change column type. Try LOCK=SHARED.
 +ERROR 0A000: LOCK=NONE is not supported for this operation. Try LOCK=SHARED.
 +# ERROR: Statement ended with errno 1845, errname ER_ALTER_OPERATION_NOT_SUPPORTED (expected results: ER_ALTER_OPERATION_NOT_SUPPORTED_REASON)
  ALTER ONLINE TABLE t1 ENGINE=MEMORY;

storage/myisammrg/mysql-test/storage_engine/alter_table_online.rdiff

@@ -61,7 +61,7 @@
 +# Also, this problem may cause a chain effect (more errors of different kinds in the test).
 +# -------------------------------------------
  ALTER ONLINE TABLE t1 MODIFY b BIGINT <CUSTOM_COL_OPTIONS>;
--ERROR 0A000: LOCK=NONE is not supported. Reason: Cannot change column type INPLACE. Try LOCK=SHARED.
+-ERROR 0A000: LOCK=NONE is not supported. Reason: Cannot change column type. Try LOCK=SHARED.
 +ERROR 0A000: LOCK=NONE/SHARED is not supported for this operation. Try LOCK=EXCLUSIVE.
 +# ERROR: Statement ended with errno 1845, errname ER_ALTER_OPERATION_NOT_SUPPORTED (expected results: ER_ALTER_OPERATION_NOT_SUPPORTED_REASON)
  ALTER ONLINE TABLE t1 ENGINE=MEMORY;