BUG#6662: Importing mysqldumps should not show any warnings of level "notes".

client/mysqldump.c

@@ -492,6 +492,8 @@ static void write_header(FILE *sql_file, char *db_name)
 	    "/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='%s%s%s' */;\n",
 	    path?"":"NO_AUTO_VALUE_ON_ZERO",compatible_mode_normal_str[0]==0?"":",",
 	    compatible_mode_normal_str);
+    fprintf(sql_file,
+	    "/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;\n");
     check_io(sql_file);
   }
 } /* write_header */
@@ -518,6 +520,8 @@ static void write_footer(FILE *sql_file)
 "/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;\n"
 "/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;\n"
 "/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;\n");
+    fprintf(sql_file,
+	    "/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;");
     fputs("\n", sql_file);
     check_io(sql_file);
   }

sql/mysql_priv.h

@@ -212,6 +212,10 @@ extern CHARSET_INFO *national_charset_info, *table_alias_charset;
 #define OPTION_RELAXED_UNIQUE_CHECKS    (1L << 27)
 #define SELECT_NO_UNLOCK                (1L << 28)
 
+/* If set to 0, then the thread will ignore all warnings with level notes.
+   Set by executing SET SHOW_NOTES=1 */
+#define OPTION_NOTES                    (1L << 31)
+
 /* Bits for different SQL modes modes (including ANSI mode) */
 #define MODE_REAL_AS_FLOAT      	1
 #define MODE_PIPES_AS_CONCAT    	2

sql/mysqld.cc

@@ -5622,7 +5622,8 @@ static void mysql_init_variables(void)
   language_ptr= language;
   mysql_data_home= mysql_real_data_home;
   thd_startup_options= (OPTION_UPDATE_LOG | OPTION_AUTO_IS_NULL |
-			OPTION_BIN_LOG | OPTION_QUOTE_SHOW_CREATE);
+			OPTION_BIN_LOG | OPTION_QUOTE_SHOW_CREATE |
+			OPTION_NOTES);
   protocol_version= PROTOCOL_VERSION;
   what_to_log= ~ (1L << (uint) COM_TIME);
   refresh_version= flush_version= 1L;	/* Increments on each reload */

sql/set_var.cc

@@ -423,6 +423,9 @@ static sys_var_thd_bit	sys_log_binlog("sql_log_bin",
 static sys_var_thd_bit	sys_sql_warnings("sql_warnings", 0,
 					 set_option_bit,
 					 OPTION_WARNINGS);
+static sys_var_thd_bit	sys_sql_notes("sql_notes", 0,
+					 set_option_bit,
+					 OPTION_NOTES);
 static sys_var_thd_bit	sys_auto_is_null("sql_auto_is_null", 0,
 					 set_option_bit,
 					 OPTION_AUTO_IS_NULL);
@@ -610,6 +613,7 @@ sys_var *sys_variables[]=
   &sys_sql_max_join_size,
   &sys_sql_mode,
   &sys_sql_warnings,
+  &sys_sql_notes,
   &sys_storage_engine,
 #ifdef HAVE_REPLICATION
   &sys_sync_binlog_period,

sql/sql_error.cc

@@ -104,6 +104,10 @@ MYSQL_ERROR *push_warning(THD *thd, MYSQL_ERROR::enum_warning_level level,
 {
   MYSQL_ERROR *err= 0;
   DBUG_ENTER("push_warning");
+
+  if (level == MYSQL_ERROR::WARN_LEVEL_NOTE && !(thd->options & OPTION_NOTES))
+    return(0);
+
   if (thd->query_id != thd->warn_id)
     mysql_reset_errors(thd);