Merge from mysql-next-mr.

1 files changed, 9 insertions, 0 deletions

diff --git a/sql/handler.h b/sql/handler.h
index f055af218b3..050a19f37d9 100644
--- a/sql/handler.h
+++ b/sql/handler.h
@@ -913,6 +913,15 @@ typedef struct st_ha_create_information
   ulong key_block_size;
   SQL_LIST merge_list;
   handlerton *db_type;
+  /**
+    Row type of the table definition.
+
+    Defaults to ROW_TYPE_DEFAULT for all non-ALTER statements.
+    For ALTER TABLE defaults to ROW_TYPE_NOT_USED (means "keep the current").
+
+    Can be changed either explicitly by the parser.
+    If nothing speficied inherits the value of the original table (if present).
+  */
   enum row_type row_type;
   uint null_bits;                       /* NULL bits at start of record */
   uint options;				/* OR of HA_CREATE_ options */