From c7c45bf28bb76ddce9aa92c4205ab51cde49197f Mon Sep 17 00:00:00 2001
From: unknown <bell@sanja.is.com.ua>
Date: Thu, 30 Jan 2003 22:15:44 +0200
Subject: fixed bug in determinating uncacheable queries new fatal_error
 interface to assign is_fatal_error and ne.report_error commant about Item_row

mysql-test/r/subselect.result:
  test of inheritence of uncacheability
mysql-test/t/subselect.test:
  test of inheritence of uncacheability
sql/item.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/item_func.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/item_row.cc:
  comment about row
sql/item_subselect.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
  (message should be sent by allocate routine
sql/log_event.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/mysqld.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/protocol.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/sql_base.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/sql_class.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/sql_class.h:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/sql_delete.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/sql_insert.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/sql_lex.h:
  fixed bug in determinating uncacheable queries
sql/sql_parse.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/sql_prepare.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/sql_select.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/sql_show.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/sql_union.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/sql_update.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
sql/thr_malloc.cc:
  new fatal_error interface to assign is_fatal_error and ne.report_error
---
 sql/item_row.cc | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'sql/item_row.cc')

diff --git a/sql/item_row.cc b/sql/item_row.cc
index 3cc7e602b15..23cafe7ec31 100644
--- a/sql/item_row.cc
+++ b/sql/item_row.cc
@@ -16,6 +16,15 @@
 
 #include "mysql_priv.h"
 
+/*
+  Row items used for comparing rows and IN operations on rows:
+
+  (a, b, c) > (10, 10, 30)
+  (a, b, c) = (select c, d, e, from t1 where x=12)
+  (a, b, c) IN ((1,2,2), (3,4,5), (6,7,8)
+  (a, b, c) IN (select c, d, e, from t1)
+*/
+
 Item_row::Item_row(List<Item> &arg):
   Item(), used_tables_cache(0), array_holder(1), const_item_cache(1)
 {
-- 
cgit v1.2.1