Added testing of LOAD DATA ... STARTING BY

Added read_only variable


mysql-test/r/loaddata.result:
  Added testing of STARTING BY
mysql-test/t/loaddata.test:
  Added testing of STARTING BY
sql/log_event.cc:
  Code cleanup
sql/set_var.cc:
  Added read_only variable
sql/sql_update.cc:
  Remove not used variable

mysql-test/r/loaddata.result

@@ -8,4 +8,11 @@ a	b	c	d
 0000-00-00	0000-00-00	0000-00-00	0000-00-00
 2003-03-03	2003-03-03	2003-03-03	NULL
 2003-03-03	2003-03-03	2003-03-03	NULL
+truncate table t1;
+load data infile '../../std_data/loaddata1.dat' into table t1 fields terminated by ',' LINES STARTING BY ',' (b,c,d);
+SELECT * from t1;
+a	b	c	d
+NULL	NULL	0000-00-00	0000-00-00
+NULL	0000-00-00	0000-00-00	0000-00-00
+NULL	2003-03-03	2003-03-03	NULL
 drop table t1;

mysql-test/t/loaddata.test

@@ -8,4 +8,12 @@ create table t1 (a date, b date, c date not null, d date);
 load data infile '../../std_data/loaddata1.dat' into table t1 fields terminated by ',';
 load data infile '../../std_data/loaddata1.dat' into table t1 fields terminated by ',' IGNORE 2 LINES;
 SELECT * from t1;
+truncate table t1;
+
+load data infile '../../std_data/loaddata1.dat' into table t1 fields terminated by ',' LINES STARTING BY ',' (b,c,d);
+SELECT * from t1;
 drop table t1;
+
+
+
+

sql/log_event.cc

@@ -1946,8 +1946,7 @@ int Load_log_event::exec_event(NET* net, struct st_relay_log_info* rli,
       sql_error= ER_UNKNOWN_ERROR;
     slave_print_error(rli,sql_error,
 		      "Error '%s' running load data infile",
-		      sql_error ? thd->net.last_error :
-		      ER_SAFE(ER_UNKNOWN_ERROR));
+		      ER_SAFE(sql_error));
     free_root(&thd->mem_root,0);
     return 1;
   }

sql/set_var.cc

@@ -185,6 +185,7 @@ sys_var_thd_ulong	sys_net_retry_count("net_retry_count",
 sys_var_thd_bool	sys_new_mode("new", &SV::new_mode);
 sys_var_thd_ulong	sys_read_buff_size("read_buffer_size",
 					   &SV::read_buff_size);
+sys_var_bool_ptr	sys_readonly("read_only", &opt_readonly);
 sys_var_thd_ulong	sys_read_rnd_buff_size("read_rnd_buffer_size",
 					       &SV::read_rnd_buff_size);
 sys_var_long_ptr	sys_rpl_recovery_rank("rpl_recovery_rank",
@@ -204,8 +205,6 @@ sys_var_bool_ptr	sys_slave_compressed_protocol("slave_compressed_protocol",
 						      &opt_slave_compressed_protocol);
 sys_var_long_ptr	sys_slave_net_timeout("slave_net_timeout",
 					      &slave_net_timeout);
-sys_var_bool_ptr	sys_readonly("read_only",
-				     &opt_readonly);
 sys_var_long_ptr	sys_slow_launch_time("slow_launch_time",
 					     &slow_launch_time);
 sys_var_thd_ulong	sys_sort_buffer("sort_buffer_size",
@@ -516,6 +515,7 @@ struct show_var_st init_vars[]= {
   {"port",                    (char*) &mysql_port,                  SHOW_INT},
   {"protocol_version",        (char*) &protocol_version,            SHOW_INT},
   {sys_read_buff_size.name,   (char*) &sys_read_buff_size,	    SHOW_SYS},
+  {sys_readonly.name,         (char*) &sys_readonly,                SHOW_SYS},
   {sys_read_rnd_buff_size.name,(char*) &sys_read_rnd_buff_size,	    SHOW_SYS},
   {sys_rpl_recovery_rank.name,(char*) &sys_rpl_recovery_rank,       SHOW_SYS},
 #ifdef HAVE_QUERY_CACHE
@@ -525,7 +525,6 @@ struct show_var_st init_vars[]= {
 #endif /* HAVE_QUERY_CACHE */
   {sys_server_id.name,	      (char*) &sys_server_id,		    SHOW_SYS},
   {sys_slave_net_timeout.name,(char*) &sys_slave_net_timeout,	    SHOW_SYS},
-  {sys_readonly.name,         (char*) &sys_readonly,                SHOW_SYS},
   {"skip_external_locking",   (char*) &my_disable_locking,          SHOW_MY_BOOL},
   {"skip_networking",         (char*) &opt_disable_networking,      SHOW_BOOL},
   {"skip_show_database",      (char*) &opt_skip_show_db,            SHOW_BOOL},

sql/sql_update.cc

@@ -182,7 +182,6 @@ int mysql_update(THD *thd,
       */
       uint         length;
       SORT_FIELD  *sortorder;
-      List<Item>   fields;
       ha_rows examined_rows;
 
       table->io_cache = (IO_CACHE *) my_malloc(sizeof(IO_CACHE),