Added code to flush a bulk_insert index.

This fixes a bug when doing multi-row inserts on table with an auto_increment key that is not in the first key segment.

Docs/manual.texi

@@ -50442,6 +50442,12 @@ each individual 4.0.x release.
 
 @itemize @bullet
 @item
+Fixed bug when doing a multi-line insert on a table with an
+auto_increment key which was not in the first part of the key.
+@item
+Changed @code{LOAD DATA INFILE} to not recreate index if the table had
+rows from before.
+@item
 Fixed overrun bug when calling @code{AES_DECRYPT()} with wrong arguments
 @item
 @code{--skip-ssl} can now be used to disable SSL in the MySQL clients,

include/my_base.h

@@ -107,6 +107,7 @@ enum ha_extra_function {
   HA_EXTRA_NO_IGNORE_DUP_KEY,
   HA_EXTRA_DONT_USE_CURSOR_TO_UPDATE,	/* Cursor will not be used for update */
   HA_EXTRA_BULK_INSERT_BEGIN,
+  HA_EXTRA_BULK_INSERT_FLUSH,		/* Flush one index */
   HA_EXTRA_BULK_INSERT_END,
   HA_EXTRA_PREPARE_FOR_DELETE
 };

myisam/mi_extra.c

@@ -35,6 +35,8 @@
 		HA_EXTRA_CACHE
 		HA_EXTRA_BULK_INSERT_BEGIN
 		  If extra_arg is 0, then the default cache size is used.
+		HA_EXTRA_BULK_INSERT_FLUSH
+		  extra_arg is a a pointer to which index to flush (uint*)
     RETURN VALUES
     0	ok
 */
@@ -356,6 +358,14 @@ int mi_extra(MI_INFO *info, enum ha_extra_function function, void *extra_arg)
     error=_mi_init_bulk_insert(info, (extra_arg ? *(ulong*) extra_arg :
 				      myisam_bulk_insert_tree_size));
     break;
+  case HA_EXTRA_BULK_INSERT_FLUSH:
+    if (info->bulk_insert)
+    {
+      uint index_to_flush= *(uint*) extra_arg;
+      if (is_tree_inited(&info->bulk_insert[index_to_flush]))
+	reset_tree(&info->bulk_insert[index_to_flush]);
+    }
+    break;
   case HA_EXTRA_BULK_INSERT_END:
     if (info->bulk_insert)
     {

mysql-test/r/insert.result

@@ -41,6 +41,14 @@ a	t>0	c	i
 5	0	a	NULL
 6	1	hello	NULL
 drop table t1;
+create table t1 (sid char(20), id int(2) NOT NULL auto_increment, key(sid, id));
+insert into t1 values ('skr',NULL),('skr',NULL),('test',NULL);
+select * from t1;
+sid	id
+skr	1
+skr	2
+test	1
+drop table t1;
 drop database if exists foo;
 create database foo;
 use foo;

mysql-test/t/insert.test

@@ -39,6 +39,15 @@ insert into t1 set a=default,t=default,c=default,i=default;
 select a,t>0,c,i from t1;
 drop table t1;
 
+#
+# Test problem with bulk insert and auto_increment on second part keys
+#
+
+create table t1 (sid char(20), id int(2) NOT NULL auto_increment, key(sid, id));
+insert into t1 values ('skr',NULL),('skr',NULL),('test',NULL);
+select * from t1;
+drop table t1;
+
 #
 # Test of mysqld crash with fully qualified column names
 #

sql/ha_myisam.cc

@@ -657,7 +657,15 @@ int ha_myisam::repair(THD *thd, MI_CHECK &param, bool optimize)
 }
 
 
-/* Deactive all not unique index that can be recreated fast */
+/*
+  Deactive all not unique index that can be recreated fast
+
+  SYNOPSIS
+    deactivate_non_unique_index()
+    rows		Rows to be inserted
+			0 if we don't know
+			HA_POS_ERROR if we want to disable all keys
+*/
 
 void ha_myisam::deactivate_non_unique_index(ha_rows rows)
 {
@@ -670,9 +678,12 @@ void ha_myisam::deactivate_non_unique_index(ha_rows rows)
         mi_extra(file, HA_EXTRA_NO_KEYS, 0);
       else
       {
+	/* Only disable old index if the table was empty */
+	if (file->state->records == 0)
 	  mi_disable_non_unique_index(file,rows);
         ha_myisam::extra_opt(HA_EXTRA_BULK_INSERT_BEGIN,
 			     current_thd->variables.bulk_insert_buff_size);
+	table->bulk_insert= 1;
       }
     }
     enable_activate_all_index=1;
@@ -690,6 +701,7 @@ bool ha_myisam::activate_all_index(THD *thd)
   DBUG_ENTER("activate_all_index");
 
   mi_extra(file, HA_EXTRA_BULK_INSERT_END, 0);
+  table->bulk_insert= 0;
   if (enable_activate_all_index &&
      share->state.key_map != set_bits(ulonglong, share->base.keys))
   {
@@ -1194,6 +1206,10 @@ longlong ha_myisam::get_auto_increment()
     return auto_increment_value;
   }
 
+  if (table->bulk_insert)
+    mi_extra(file, HA_EXTRA_BULK_INSERT_FLUSH,
+	     (void*) &table->next_number_index);
+
   longlong nr;
   int error;
   byte key[MI_MAX_KEY_LENGTH];

sql/sql_insert.cc

@@ -202,6 +202,7 @@ int mysql_insert(THD *thd,TABLE_LIST *table_list, List<Item> &fields,
 			   thd->variables.read_buff_size);
     table->file->extra_opt(HA_EXTRA_BULK_INSERT_BEGIN,
 			   thd->variables.bulk_insert_buff_size);
+    table->bulk_insert= 1;
   }
 
   while ((values= its++))
@@ -290,6 +291,7 @@ int mysql_insert(THD *thd,TABLE_LIST *table_list, List<Item> &fields,
 	  error=1;
 	}
       }
+      table->bulk_insert= 0;
     }
     if (id && values_list.elements != 1)
       thd->insert_id(id);			// For update log

sql/sql_load.cc

@@ -248,8 +248,7 @@ int mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
     table->next_number_field=table->found_next_number_field;
     VOID(table->file->extra_opt(HA_EXTRA_WRITE_CACHE,
 			    thd->variables.read_buff_size));
-    VOID(table->file->extra_opt(HA_EXTRA_BULK_INSERT_BEGIN,
-				thd->variables.bulk_insert_buff_size));
+    table->bulk_insert= 1;
     if (handle_duplicates == DUP_IGNORE ||
 	handle_duplicates == DUP_REPLACE)
       table->file->extra(HA_EXTRA_IGNORE_DUP_KEY);

sql/table.h

@@ -91,7 +91,7 @@ struct st_table {
   my_bool null_row;			/* All columns are null */
   my_bool maybe_null,outer_join;	/* Used with OUTER JOIN */
   my_bool distinct,const_table,no_rows;
-  my_bool key_read;
+  my_bool key_read, bulk_insert;
   my_bool crypted;
   my_bool db_low_byte_first;		/* Portable row format */
   my_bool locked_by_flush;

vio/viosslfactories.c

@@ -71,9 +71,11 @@ report_errors()
 
   while ((l=ERR_get_error_line_data(&file,&line,&data,&flags)) != 0)
   {
+#ifndef DBUG_OFF				/* Avoid warning */
     char buf[200];
     DBUG_PRINT("error", ("OpenSSL: %s:%s:%d:%s\n", ERR_error_string(l,buf),
 			 file,line,(flags & ERR_TXT_STRING) ? data : "")) ;
+#endif
   }
   DBUG_VOID_RETURN;
 }