SQL: history records became alive on copy [fixes #212]

Author: kevgs

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

@@ -366,7 +366,6 @@ t	CREATE TABLE `t` (
 select * from t;
 a	b
 2	NULL
-1	NULL
 alter table t drop column b, algorithm=copy;
 show create table t;
 Table	Create Table
@@ -393,7 +392,6 @@ t	CREATE TABLE `t` (
 select * from t;
 a	b
 2	NULL
-1	NULL
 alter table t drop column b, algorithm=inplace;
 show create table t;
 Table	Create Table

sql/sql_table.cc

@@ -10052,7 +10052,17 @@ copy_data_between_tables(THD *thd, TABLE *from, TABLE *to,
       error= 1;
       break;
     }
-    error=to->file->ha_write_row(to->record[0]);
+    if (keep_versioned && to->versioned_by_engine() &&
+        !thd->variables.vers_ddl_survival)
+    {
+      to->s->versioned= false;
+    }
+    error= to->file->ha_write_row(to->record[0]);
+    if (keep_versioned && to->versioned_by_engine() &&
+        !thd->variables.vers_ddl_survival)
+    {
+      to->s->versioned= true;
+    }
     to->auto_increment_field_not_null= FALSE;
     if (error)
     {