MDEV-36777 create vector table failed with VECTOR INDEX when innodb_force_primary_key=on

mark creating an index as an SQLCOM_CREATE_INDEX operation.

currently the only effect of this is to tell InnoDB that it's not
a "CREATE TABLE" as such, so not affected by innodb_force_primary_key

Author: vuvova

mysql-test/main/vector_innodb.result

@@ -270,10 +270,25 @@ set global innodb_force_primary_key=1;
 insert into t values (0x31313131);
 insert into t values (0x32323232);
 drop table t;
-create table t (v vector (1) not null,vector index (v)) engine=innodb;
-ERROR 42000: This table type requires a primary key
 set global innodb_force_primary_key=0;
 #
+# MDEV-36777 create vector table failed with VECTOR INDEX when innodb_force_primary_key=on
+#
+set global innodb_force_primary_key=on;
+create table t1 (v vector(5) not null, vector index (v)) engine=innodb;
+ERROR 42000: This table type requires a primary key
+create table t1 (id int primary key, v vector(5) not null, vector index (v)) engine=innodb;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `id` int(11) NOT NULL,
+  `v` vector(5) NOT NULL,
+  PRIMARY KEY (`id`),
+  VECTOR KEY `v` (`v`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
+drop table t1;
+set global innodb_force_primary_key=default;
+#
 # MDEV-35922 Server crashes in mhnsw_read_first upon using vector key with views
 #
 create table t (pk int primary key, v vector(1) not null, vector(v)) engine=innodb;

mysql-test/main/vector_innodb.test

@@ -269,11 +269,18 @@ set global innodb_force_primary_key=1;
 insert into t values (0x31313131);
 insert into t values (0x32323232);
 drop table t;
+set global innodb_force_primary_key=0;
 
-# vector index table has no PK, so cannot be created:
+--echo #
+--echo # MDEV-36777 create vector table failed with VECTOR INDEX when innodb_force_primary_key=on
+--echo #
+set global innodb_force_primary_key=on;
 --error ER_REQUIRES_PRIMARY_KEY
-create table t (v vector (1) not null,vector index (v)) engine=innodb;
-set global innodb_force_primary_key=0;
+create table t1 (v vector(5) not null, vector index (v)) engine=innodb;
+create table t1 (id int primary key, v vector(5) not null, vector index (v)) engine=innodb;
+show create table t1;
+drop table t1;
+set global innodb_force_primary_key=default;
 
 --echo #
 --echo # MDEV-35922 Server crashes in mhnsw_read_first upon using vector key with views

sql/handler.cc

@@ -6523,8 +6523,10 @@ int ha_create_table(THD *thd, const char *path, const char *db,
     if ((error= share.path.length > sizeof(file_name) - HLINDEX_BUF_LEN))
       goto err;
 
+    enum_sql_command old_sql_command= thd->lex->sql_command;
     for (uint i= share.keys; i < share.total_keys; i++)
     {
+      thd->lex->sql_command= SQLCOM_CREATE_INDEX;
       my_snprintf(path_end, HLINDEX_BUF_LEN, HLINDEX_TEMPLATE, i);
       if (create_info->index_file_name)
         my_snprintf(index_file_name_end, HLINDEX_BUF_LEN, HLINDEX_TEMPLATE, i);
@@ -6544,6 +6546,7 @@ int ha_create_table(THD *thd, const char *path, const char *db,
                                              &unused)))
         break;
     }
+    thd->lex->sql_command= old_sql_command;
     free_table_share(&index_share);
   }