Bug #17849: sql_big_selects not shown in SHOW VARIABLES output

  
  This patch simply adds sql_big_selects to the list of variables
  output by SHOW VARIABLES.

mysql-test/r/variables.result

@@ -584,3 +584,10 @@ set @@global.character_set_filesystem=default;
 select @@global.character_set_filesystem;
 @@global.character_set_filesystem
 binary
+set @old_sql_big_selects = @@sql_big_selects;
+set @@sql_big_selects = 1;
+show variables like 'sql_big_selects';
+Variable_name	Value
+sql_big_selects	ON
+set @@sql_big_selects = @old_sql_big_selects;
+End of 5.0 tests

mysql-test/t/variables.test

@@ -472,4 +472,12 @@ select @@character_set_filesystem;
 set @@global.character_set_filesystem=default;
 select @@global.character_set_filesystem;
 
-# End of 5.0 tests
+#
+# Bug #17849: Show sql_big_selects in SHOW VARIABLES
+#
+set @old_sql_big_selects = @@sql_big_selects;
+set @@sql_big_selects = 1;
+show variables like 'sql_big_selects';
+set @@sql_big_selects = @old_sql_big_selects;
+
+--echo End of 5.0 tests

sql/set_var.cc

@@ -993,7 +993,8 @@ struct show_var_st init_vars[]= {
 #ifdef HAVE_SYS_UN_H
   {"socket",                  (char*) &mysqld_unix_port,             SHOW_CHAR_PTR},
 #endif
-  {sys_sort_buffer.name,      (char*) &sys_sort_buffer, 	    SHOW_SYS},
+  {sys_sort_buffer.name,      (char*) &sys_sort_buffer,             SHOW_SYS},
+  {sys_big_selects.name,      (char*) &sys_big_selects,             SHOW_SYS},
   {sys_sql_mode.name,         (char*) &sys_sql_mode,                SHOW_SYS},
   {"sql_notes",               (char*) &sys_sql_notes,               SHOW_BOOL},
   {"sql_warnings",            (char*) &sys_sql_warnings,            SHOW_BOOL},