From 4779af2921ca1a6e1c722e62a3dceab819231ce1 Mon Sep 17 00:00:00 2001 From: Sergey Petrunya Date: Wed, 2 Sep 2009 12:40:18 +0400 Subject: [PATCH] More comments --- sql/opt_range.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sql/opt_range.h b/sql/opt_range.h index 225af276e55..6a0234e62fe 100644 --- a/sql/opt_range.h +++ b/sql/opt_range.h @@ -38,6 +38,12 @@ typedef struct st_key_part { } KEY_PART; +/* + A "MIN_TUPLE < tbl.key_tuple < MAX_TUPLE" interval. + + One of endpoints may be absent. 'flags' member has flags which tell whether + the endpoints are '<' or '<='. +*/ class QUICK_RANGE :public Sql_alloc { public: uchar *min_key,*max_key;