Merge mysql.com:/home/jimw/my/mysql-4.1-clean

into  mysql.com:/home/jimw/my/mysql-5.0-clean

mysql-test/r/loaddata.result

@@ -77,6 +77,14 @@ id
 0
 SET @@SQL_MODE=@OLD_SQL_MODE;
 drop table t1;
+create table t1 (a varchar(20), b varchar(20));
+load data infile '../../std_data/loaddata_dq.dat' into table t1 fields terminated by ',' enclosed by '"' escaped by '"' (a,b);
+select * from t1;
+a	b
+field1	field2
+a"b	cd"ef
+a"b	c"d"e
+drop table t1;
 create table t1 (a int default 100, b int, c varchar(60));
 load data infile '../../std_data/rpl_loaddata.dat' into table t1 (a, @b) set b=@b+10, c=concat("b=",@b);
 select * from t1;

mysql-test/std_data/loaddata_dq.dat

+"field1","field2"
+"a""b","cd""ef"
+"a"b",c"d"e

mysql-test/t/loaddata.test

@@ -31,7 +31,6 @@ load data infile '../../std_data/loaddata4.dat' into table t1 fields terminated
 select * from t1;
 drop table t1;
 
-
 #
 # Bug #12053 LOAD DATA INFILE ignores NO_AUTO_VALUE_ON_ZERO setting
 #
@@ -59,6 +58,15 @@ select * from t1;
 SET @@SQL_MODE=@OLD_SQL_MODE;
 drop table t1;
 
+#
+# Bug #11203: LOAD DATA does not accept same characters for ESCAPED and
+# ENCLOSED
+#
+create table t1 (a varchar(20), b varchar(20));
+load data infile '../../std_data/loaddata_dq.dat' into table t1 fields terminated by ',' enclosed by '"' escaped by '"' (a,b);
+select * from t1;
+drop table t1;
+
 # End of 4.1 tests
 
 #
@@ -104,3 +112,5 @@ select * from t1;
 
 # cleanup
 drop table t1, t2;
+
+# End of 5.0 tests

sql/item.cc

@@ -3248,7 +3248,7 @@ bool Item_field::fix_fields(THD *thd, Item **reference)
         Item** res= find_item_in_list(this, thd->lex->current_select->item_list,
                                       &counter, REPORT_EXCEPT_NOT_FOUND,
                                       &not_used);
-        if (res != not_found_item && (*res)->type() == Item::FIELD_ITEM)
+        if (res != (Item **)not_found_item && (*res)->type() == Item::FIELD_ITEM)
         {
           set_field((*((Item_field**)res))->field);
           return 0;

sql/sql_load.cc

@@ -1014,8 +1014,23 @@ int READ_INFO::read_field()
 	  *to++= (byte) escape_char;
 	  goto found_eof;
 	}
-	*to++ = (byte) unescape((char) chr);
-	continue;
+        /*
+          When escape_char == enclosed_char, we treat it like we do for
+          handling quotes in SQL parsing -- you can double-up the
+          escape_char to include it literally, but it doesn't do escapes
+          like \n. This allows: LOAD DATA ... ENCLOSED BY '"' ESCAPED BY '"'
+          with data like: "fie""ld1", "field2"
+         */
+        if (escape_char != enclosed_char || chr == escape_char)
+        {
+          *to++ = (byte) unescape((char) chr);
+          continue;
+        }
+        else
+        {
+          PUSH(chr);
+          chr= escape_char;
+        }
       }
 #ifdef ALLOW_LINESEPARATOR_IN_STRINGS
       if (chr == line_term_char)