Merge rkalimullin@bk-internal.mysql.com:/home/bk/mysql-4.1

into mysql.r18.ru:/usr/home/bk/mysql-4.1

mysql-test/r/func_gconcat.result

@@ -154,8 +154,26 @@ Warning	1258	1 line(s) was(were) cut by group_concat()
 show warnings;
 Level	Code	Message
 Warning	1258	1 line(s) was(were) cut by group_concat()
+set group_concat_max_len = 1024;
+drop table if exists T_URL;
+Warnings:
+Note	1051	Unknown table 'T_URL'
+create table T_URL ( URL_ID int(11), URL varchar(80));
+drop table if exists T_REQUEST;
+Warnings:
+Note	1051	Unknown table 'T_REQUEST'
+create table T_REQUEST ( REQ_ID int(11), URL_ID int(11));
+insert into T_URL values (4,'www.host.com'), (5,'www.google.com'),(5,'www.help.com');
+insert into T_REQUEST values (1,4), (5,4), (5,5);
+select REQ_ID, Group_Concat(URL) as URL from T_URL, T_REQUEST where 
+T_REQUEST.URL_ID = T_URL.URL_ID group by REQ_ID;
+REQ_ID	URL
+1	www.host.com
+5	www.host.com,www.google.com,www.help.com
+drop table T_URL;
+drop table T_REQUEST;
 select group_concat(sum(a)) from t1 group by grp;
 ERROR HY000: Invalid use of group function
 select grp,group_concat(c order by 2) from t1 group by grp;
 ERROR 42S22: Unknown column '2' in 'group statement'
-drop table if exists t1;
+drop table t1;

mysql-test/r/func_str.result

@@ -249,6 +249,33 @@ INSERT INTO t1 VALUES (1, 'a545f661efdd1fb66fdee3aab79945bf');
 SELECT 1 FROM t1 WHERE tmp=AES_DECRYPT(tmp,"password");
 1
 DROP TABLE t1;
+select POSITION(_latin1'B' IN _latin1'abcd');
+POSITION(_latin1'B' IN _latin1'abcd')
+2
+select POSITION(_latin1'B' IN _latin1'abcd' COLLATE latin1_bin);
+POSITION(_latin1'B' IN _latin1'abcd' COLLATE latin1_bin)
+0
+select POSITION(_latin1'B' COLLATE latin1_bin IN _latin1'abcd');
+POSITION(_latin1'B' COLLATE latin1_bin IN _latin1'abcd')
+0
+select POSITION(_latin1'B' COLLATE latin1_general_ci IN _latin1'abcd' COLLATE latin1_bin);
+ERROR HY000: Illegal mix of collations (latin1_bin,EXPLICIT) and (latin1_general_ci,EXPLICIT) for operation 'locate'
+select POSITION(_latin1'B' IN _latin2'abcd');
+ERROR HY000: Illegal mix of collations (latin2_general_ci,COERCIBLE) and (latin1_swedish_ci,COERCIBLE) for operation 'locate'
+select FIND_IN_SET(_latin1'B',_latin1'a,b,c,d');
+FIND_IN_SET(_latin1'B',_latin1'a,b,c,d')
+2
+select FIND_IN_SET(_latin1'B' COLLATE latin1_general_ci,_latin1'a,b,c,d' COLLATE latin1_bin);
+ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT) and (latin1_bin,EXPLICIT) for operation 'find_in_set'
+select FIND_IN_SET(_latin1'B',_latin2'a,b,c,d');
+ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation 'find_in_set'
+select SUBSTRING_INDEX(_latin1'abcdabcdabcd',_latin1'd',2);
+SUBSTRING_INDEX(_latin1'abcdabcdabcd',_latin1'd',2)
+abcdabc
+select SUBSTRING_INDEX(_latin1'abcdabcdabcd',_latin2'd',2);
+ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation 'substr_index'
+select SUBSTRING_INDEX(_latin1'abcdabcdabcd' COLLATE latin1_general_ci,_latin1'd' COLLATE latin1_bin,2);
+ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT) and (latin1_bin,EXPLICIT) for operation 'substr_index'
 select collation(bin(130)), coercibility(bin(130));
 collation(bin(130))	coercibility(bin(130))
 latin1_swedish_ci	3

mysql-test/t/func_gconcat.test

@@ -68,6 +68,20 @@ select grp,group_concat(c order by c) from t1 group by grp;
 set group_concat_max_len = 5;
 select grp,group_concat(c) from t1 group by grp;
 show warnings;
+set group_concat_max_len = 1024;
+
+# Test variable length
+
+drop table if exists T_URL;
+create table T_URL ( URL_ID int(11), URL varchar(80));
+drop table if exists T_REQUEST;
+create table T_REQUEST ( REQ_ID int(11), URL_ID int(11));
+insert into T_URL values (4,'www.host.com'), (5,'www.google.com'),(5,'www.help.com');
+insert into T_REQUEST values (1,4), (5,4), (5,5);
+select REQ_ID, Group_Concat(URL) as URL from T_URL, T_REQUEST where 
+T_REQUEST.URL_ID = T_URL.URL_ID group by REQ_ID;
+drop table T_URL;
+drop table T_REQUEST;
 
 # Test errors
 
@@ -76,4 +90,4 @@ select group_concat(sum(a)) from t1 group by grp;
 --error 1054
 select grp,group_concat(c order by 2) from t1 group by grp;
 
-drop table if exists t1;
+drop table t1;

mysql-test/t/func_str.test

@@ -136,6 +136,33 @@ DROP TABLE t1;
 #
 # Test collation and coercibility
 #
+select POSITION(_latin1'B' IN _latin1'abcd');
+select POSITION(_latin1'B' IN _latin1'abcd' COLLATE latin1_bin);
+select POSITION(_latin1'B' COLLATE latin1_bin IN _latin1'abcd');
+--error 1265
+select POSITION(_latin1'B' COLLATE latin1_general_ci IN _latin1'abcd' COLLATE latin1_bin);
+--error 1265
+select POSITION(_latin1'B' IN _latin2'abcd');
+
+select FIND_IN_SET(_latin1'B',_latin1'a,b,c,d');
+--fix this:
+--select FIND_IN_SET(_latin1'B',_latin1'a,b,c,d' COLLATE latin1_bin);
+--select FIND_IN_SET(_latin1'B' COLLATE latin1_bin,_latin1'a,b,c,d');
+--error 1265
+select FIND_IN_SET(_latin1'B' COLLATE latin1_general_ci,_latin1'a,b,c,d' COLLATE latin1_bin);
+--error 1265
+select FIND_IN_SET(_latin1'B',_latin2'a,b,c,d');
+
+select SUBSTRING_INDEX(_latin1'abcdabcdabcd',_latin1'd',2);
+--fix this:
+--select SUBSTRING_INDEX(_latin1'abcdabcdabcd' COLLATE latin1_bin,_latin1'd',2);
+--select SUBSTRING_INDEX(_latin1'abcdabcdabcd',_latin1'd' COLLATE latin1_bin,2);
+--error 1265
+select SUBSTRING_INDEX(_latin1'abcdabcdabcd',_latin2'd',2);
+--error 1265
+select SUBSTRING_INDEX(_latin1'abcdabcdabcd' COLLATE latin1_general_ci,_latin1'd' COLLATE latin1_bin,2);
+
+
 select collation(bin(130)), coercibility(bin(130));
 select collation(oct(130)), coercibility(oct(130));
 select collation(conv(130,16,10)), coercibility(conv(130,16,10));

sql/field.cc

@@ -183,7 +183,7 @@ Field::Field(char *ptr_arg,uint32 length_arg,uchar *null_ptr_arg,
    field_name(field_name_arg),
    query_id(0),key_start(0),part_of_key(0),part_of_sortkey(0),
    unireg_check(unireg_check_arg),
-   field_length(length_arg),null_bit(null_bit_arg)
+   field_length(length_arg),null_bit(null_bit_arg),abs_offset(0)
 {
   flags=null_ptr ? 0: NOT_NULL_FLAG;
   comment.str= (char*) "";

sql/field.h

@@ -66,6 +66,7 @@ class Field
   uint32	field_length;		// Length of field
   uint16	flags;
   uchar		null_bit;		// Bit used to test null bit
+  uint          abs_offset;             // use only in group_concat
 
   Field(char *ptr_arg,uint32 length_arg,uchar *null_ptr_arg,uchar null_bit_arg,
 	utype unireg_check_arg, const char *field_name_arg,

sql/item_func.cc

@@ -1045,10 +1045,18 @@ longlong Item_func_coercibility::val_int()
   return (longlong) args[0]->derivation();
 }
 
+void Item_func_locate::fix_length_and_dec()
+{
+  maybe_null=0; max_length=11;
+  if (cmp_collation.set(args[0]->collation, args[1]->collation))
+    my_coll_agg_error(args[0]->collation, args[1]->collation, func_name());
+}
+
 longlong Item_func_locate::val_int()
 {
   String *a=args[0]->val_str(&value1);
   String *b=args[1]->val_str(&value2);
+  bool binary_cmp= (cmp_collation.collation->state & MY_CS_BINSORT) ? 1 : 0;
   if (!a || !b)
   {
     null_value=1;
@@ -1063,7 +1071,7 @@ longlong Item_func_locate::val_int()
   {
     start=(uint) args[2]->val_int()-1;
 #ifdef USE_MB
-    if (use_mb(a->charset()))
+    if (use_mb(cmp_collation.collation))
     {
       start0=start;
       if (!binary_cmp)
@@ -1076,7 +1084,7 @@ longlong Item_func_locate::val_int()
   if (!b->length())				// Found empty string at start
     return (longlong) (start+1);
 #ifdef USE_MB
-  if (use_mb(a->charset()) && !binary_cmp)
+  if (use_mb(cmp_collation.collation) && !binary_cmp)
   {
     const char *ptr=a->ptr()+start;
     const char *search=b->ptr();
@@ -1095,7 +1103,7 @@ longlong Item_func_locate::val_int()
         return (longlong) start0+1;
       }
   skipp:
-      if ((l=my_ismbchar(a->charset(),ptr,strend)))
+      if ((l=my_ismbchar(cmp_collation.collation,ptr,strend)))
 	ptr+=l;
       else ++ptr;
       ++start0;
@@ -1201,6 +1209,8 @@ void Item_func_find_in_set::fix_length_and_dec()
       }
     }
   }
+  if (cmp_collation.set(args[0]->collation, args[1]->collation))
+    my_coll_agg_error(args[0]->collation, args[1]->collation, func_name());
 }
 
 static const char separator=',';
@@ -1228,7 +1238,6 @@ longlong Item_func_find_in_set::val_int()
   null_value=0;
 
   int diff;
-  CHARSET_INFO *charset= find->charset();
   if ((diff=buffer->length() - find->length()) >= 0)
   {
     const char *f_pos=find->ptr();
@@ -1242,7 +1251,8 @@ longlong Item_func_find_in_set::val_int()
       const char *pos= f_pos;
       while (pos != f_end)
       {
-	if (my_toupper(charset,*str) != my_toupper(charset,*pos))
+	if (my_toupper(cmp_collation.collation,*str) != 
+	    my_toupper(cmp_collation.collation,*pos))
 	  goto not_found;
 	str++;
 	pos++;
@@ -2013,7 +2023,7 @@ void Item_func_set_user_var::update_hash(void *ptr, uint length,
       my_free(entry->value,MYF(0));
     entry->value=0;
     entry->length=0;
-    collation.set(cs, dv);
+    entry->collation.set(cs, dv);
   }
   else
   {

sql/item_func.h

@@ -610,17 +610,13 @@ class Item_func_coercibility :public Item_int_func
 class Item_func_locate :public Item_int_func
 {
   String value1,value2;
-  bool binary_cmp;
+  DTCollation cmp_collation;
 public:
   Item_func_locate(Item *a,Item *b) :Item_int_func(a,b) {}
   Item_func_locate(Item *a,Item *b,Item *c) :Item_int_func(a,b,c) {}
   const char *func_name() const { return "locate"; }
   longlong val_int();
-  void fix_length_and_dec()
-  {
-    maybe_null=0; max_length=11;
-    binary_cmp = args[0]->binary() || args[1]->binary();
-  }
+  void fix_length_and_dec();
 };
 
 
@@ -684,6 +680,7 @@ class Item_func_find_in_set :public Item_int_func
   String value,value2;
   uint enum_value;
   ulonglong enum_bit;
+  DTCollation cmp_collation;
 public:
   Item_func_find_in_set(Item *a,Item *b) :Item_int_func(a,b),enum_value(0) {}
   longlong val_int();

sql/item_strfunc.cc

@@ -1037,6 +1037,15 @@ void Item_func_substr::fix_length_and_dec()
 }
 
 
+void Item_func_substr_index::fix_length_and_dec()
+{ 
+  max_length= args[0]->max_length;
+  if (collation.set(args[0]->collation, args[1]->collation) ||
+      (collation.derivation == DERIVATION_NONE))
+    my_coll_agg_error(args[0]->collation, args[1]->collation, func_name());
+}
+
+
 String *Item_func_substr_index::val_str(String *str)
 {
   String *res =args[0]->val_str(str);
@@ -1054,6 +1063,8 @@ String *Item_func_substr_index::val_str(String *str)
   if (!res->length() || !delimeter_length || !count)
     return &empty_string;		// Wrong parameters
 
+  res->set_charset(collation.collation);
+
 #ifdef USE_MB
   if (use_mb(res->charset()))
   {

sql/item_strfunc.h

@@ -215,7 +215,7 @@ class Item_func_substr_index :public Item_str_func
 public:
   Item_func_substr_index(Item *a,Item *b,Item *c) :Item_str_func(a,b,c) {}
   String *val_str(String *);
-  void fix_length_and_dec() { max_length= args[0]->max_length; }
+  void fix_length_and_dec();
   const char *func_name() const { return "substr_index"; }
 };
 

sql/item_sum.cc

@@ -1453,27 +1453,28 @@ String *Item_sum_udf_str::val_str(String *str)
   GROUP_CONCAT(DISTINCT expr,...)
 */
 
-static int group_concat_key_cmp_with_distinct(void* arg, byte* key1,
-					      byte* key2)
+int group_concat_key_cmp_with_distinct(void* arg, byte* key1,
+				       byte* key2)
 {
   Item_func_group_concat* item= (Item_func_group_concat*)arg;
+
   for (uint i= 0; i < item->arg_count_field; i++)
   {
-    Item *field_item= item->expr[i];
+    Item *field_item= item->args[i];
     Field *field= field_item->tmp_table_field();
     if (field)
     {
-      uint offset= field->offset();
+      uint offset= field->abs_offset;
 
       int res= field->key_cmp(key1 + offset, key2 + offset);
       /*
         if key1 and key2 is not equal than field->key_cmp return offset. This
-	function must return value 1 for this case.
+        function must return value 1 for this case.
       */
       if (res)
         return 1;
     }
-  }
+  } 
   return 0;
 }
 
@@ -1483,9 +1484,10 @@ static int group_concat_key_cmp_with_distinct(void* arg, byte* key1,
   GROUP_CONCAT(expr,... ORDER BY col,... )
 */
 
-static int group_concat_key_cmp_with_order(void* arg, byte* key1, byte* key2)
+int group_concat_key_cmp_with_order(void* arg, byte* key1, byte* key2)
 {
   Item_func_group_concat* item= (Item_func_group_concat*)arg;
+
   for (uint i=0; i < item->arg_count_order; i++)
   {
     ORDER *order_item= item->order[i];
@@ -1493,14 +1495,14 @@ static int group_concat_key_cmp_with_order(void* arg, byte* key1, byte* key2)
     Field *field= item->tmp_table_field();
     if (field)
     {
-      uint offset= field->offset();
+      uint offset= field->abs_offset;
 
       bool dir= order_item->asc;
       int res= field->key_cmp(key1 + offset, key2 + offset);
       if (res)
         return dir ? res : -res;
     }
-  }
+  } 
   /*
     We can't return 0 because tree class remove this item as double value. 
   */   
@@ -1513,9 +1515,8 @@ static int group_concat_key_cmp_with_order(void* arg, byte* key1, byte* key2)
   GROUP_CONCAT(DISTINCT expr,... ORDER BY col,... )
 */
 
-static int group_concat_key_cmp_with_distinct_and_order(void* arg,
-							byte* key1,
-							byte* key2)
+int group_concat_key_cmp_with_distinct_and_order(void* arg,byte* key1,
+						 byte* key2)
 {
   if (!group_concat_key_cmp_with_distinct(arg,key1,key2))
     return 0;
@@ -1528,24 +1529,23 @@ static int group_concat_key_cmp_with_distinct_and_order(void* arg,
   item is pointer to Item_func_group_concat
 */
 
-static int dump_leaf_key(byte* key, uint32 count __attribute__((unused)),
+int dump_leaf_key(byte* key, uint32 count __attribute__((unused)),
                   Item_func_group_concat *group_concat_item)
 {
   char buff[MAX_FIELD_WIDTH];
   String tmp((char *)&buff,sizeof(buff),default_charset_info);
   String tmp2((char *)&buff,sizeof(buff),default_charset_info);
-
+  
   tmp.length(0);
   
   for (uint i= 0; i < group_concat_item->arg_show_fields; i++)
   {
-    Item *show_item= group_concat_item->expr[i];
+    Item *show_item= group_concat_item->args[i];
     if (!show_item->const_item())
     {
       Field *f= show_item->tmp_table_field();
-      uint offset= f->offset();
       char *sv= f->ptr;
-      f->ptr= (char *)key + offset;
+      f->ptr= (char *)key + f->abs_offset;
       String *res= f->val_str(&tmp,&tmp2);
       group_concat_item->result.append(*res);
       f->ptr= sv;
@@ -1595,9 +1595,14 @@ Item_func_group_concat::Item_func_group_concat(bool is_distinct,
 					       List<Item> *is_select,
 					       SQL_LIST *is_order,
 					       String *is_separator)
-  :Item_sum(), tmp_table_param(0), warning_available(false),
-   separator(is_separator), tree(&tree_base), table(0), 
-   count_cut_values(0), tree_mode(0), distinct(is_distinct)
+  :Item_sum(), tmp_table_param(0), max_elements_in_tree(0), warning(0),
+   warning_available(0), key_length(0), rec_offset(0),
+   tree_mode(0), distinct(is_distinct), warning_for_row(0),
+   separator(is_separator), tree(&tree_base), table(0),
+   order(0), tables_list(0), group_concat_max_len(0),
+   show_elements(0), arg_count_order(0), arg_count_field(0),
+   arg_show_fields(0), count_cut_values(0)
+   
 {
   original= 0;
   quick_group= 0;
@@ -1613,16 +1618,12 @@ Item_func_group_concat::Item_func_group_concat(bool is_distinct,
     We need to allocate:
     args - arg_count+arg_count_order (for possible order items in temporare 
            tables)
-    expr - arg_count_field
     order - arg_count_order
   */
-  args= (Item**) sql_alloc(sizeof(Item*)*(arg_count+arg_count_order+
-					  arg_count_field)+
+  args= (Item**) sql_alloc(sizeof(Item*)*(arg_count+arg_count_order)+
 			   sizeof(ORDER*)*arg_count_order);
   if (!args)
-    return;					// thd->fatal is set
-  expr= args;
-  expr+= arg_count+arg_count_order;
+    return;
 
   /* fill args items of show and sort */
   int i= 0;
@@ -1630,12 +1631,12 @@ Item_func_group_concat::Item_func_group_concat(bool is_distinct,
   Item *item_select;
 
   for ( ; (item_select= li++) ; i++)
-    args[i]= expr[i]= item_select;
+    args[i]= item_select;
 
   if (arg_count_order) 
   {
     i= 0;
-    order= (ORDER**)(expr + arg_count_field);
+    order= (ORDER**)(args + arg_count + arg_count_order);
     for (ORDER *order_item= (ORDER*) is_order->first;
                 order_item != NULL;
                 order_item= order_item->next)
@@ -1696,13 +1697,15 @@ bool Item_func_group_concat::reset()
 
 bool Item_func_group_concat::add()
 {
+  if (always_null)
+    return 0;
   copy_fields(tmp_table_param);
   copy_funcs(tmp_table_param->items_to_copy);
 
   bool record_is_null= TRUE;
   for (uint i= 0; i < arg_show_fields; i++)
   {
-    Item *show_item= expr[i];
+    Item *show_item= args[i];
     if (!show_item->const_item())
     {
       Field *f= show_item->tmp_table_field();
@@ -1718,13 +1721,13 @@ bool Item_func_group_concat::add()
   null_value= FALSE;
   if (tree_mode)
   {
-    if (!tree_insert(tree, table->record[0], 0,tree->custom_arg))
+    if (!tree_insert(tree, table->record[0] + rec_offset, 0, tree->custom_arg))
       return 1;
   }
   else
   {
     if (result.length() <= group_concat_max_len && !warning_for_row)
-      dump_leaf_key(table->record[0],1,
+      dump_leaf_key(table->record[0] + rec_offset, 1,
                     (Item_func_group_concat*)this);
   }
   return 0;
@@ -1757,12 +1760,6 @@ Item_func_group_concat::fix_fields(THD *thd, TABLE_LIST *tables, Item **ref)
       return 1;
     maybe_null |= args[i]->maybe_null;
   }
-  for (i= 0 ; i < arg_count_field ; i++)
-  {
-    if (expr[i]->fix_fields(thd, tables, expr + i) || expr[i]->check_cols(1))
-      return 1;
-    maybe_null |= expr[i]->maybe_null;
-  }
   /*
     Fix fields for order clause in function:
     GROUP_CONCAT(expr,... ORDER BY col,... )
@@ -1796,6 +1793,7 @@ bool Item_func_group_concat::setup(THD *thd)
   /*
     all not constant fields are push to list and create temp table
   */ 
+  always_null= 0;
   for (uint i= 0; i < arg_count; i++)
   {
     Item *item= args[i];
@@ -1808,6 +1806,8 @@ bool Item_func_group_concat::setup(THD *thd)
 	always_null= 1;
     }
   }
+  if (always_null)
+    return 0;
         
   List<Item> all_fields(list);
   if (arg_count_order) 
@@ -1827,12 +1827,25 @@ bool Item_func_group_concat::setup(THD *thd)
     return 1;
   table->file->extra(HA_EXTRA_NO_ROWS);
   table->no_rows= 1;
-  qsort_cmp2 compare_key;
-  
-  tree_mode= distinct || arg_count_order;
+
+
+  Field** field, **field_end;
+  field_end = (field = table->field) + table->fields;
+  uint offset = 0;
+  for (key_length = 0; field < field_end; ++field)
+  {
+    uint32 length= (*field)->pack_length();
+    (*field)->abs_offset= offset;
+    offset+= length;
+    key_length += length;
+  } 
+  rec_offset = table->reclength - key_length;
+
   /*
     choise function of sort
   */  
+  tree_mode= distinct || arg_count_order; 
+  qsort_cmp2 compare_key;
   if (tree_mode)
   {
     if (arg_count_order)
@@ -1856,9 +1869,9 @@ bool Item_func_group_concat::setup(THD *thd)
     */
     init_tree(tree, min(thd->variables.max_heap_table_size,
               thd->variables.sortbuff_size/16), 0,
-              table->reclength, compare_key, 0, NULL, (void*) this);
-    max_elements_in_tree= ((table->reclength) ? 
-           thd->variables.max_heap_table_size/table->reclength : 1);
+              key_length, compare_key, 0, NULL, (void*) this);
+    max_elements_in_tree= ((key_length) ? 
+           thd->variables.max_heap_table_size/key_length : 1);
   };
   item_thd= thd;
 
@@ -1909,3 +1922,6 @@ String* Item_func_group_concat::val_str(String* str)
   }
   return &result;
 }
+
+
+

sql/item_sum.h

@@ -644,13 +644,28 @@ class Item_func_group_concat : public Item_sum
   uint max_elements_in_tree;
   MYSQL_ERROR *warning;
   bool warning_available;
+  uint key_length;
+  int rec_offset;
+  bool tree_mode;
+  bool distinct;
+  bool warning_for_row;
+  bool always_null;
+
+  friend int group_concat_key_cmp_with_distinct(void* arg, byte* key1,
+					      byte* key2);
+  friend int group_concat_key_cmp_with_order(void* arg, byte* key1, byte* key2);
+  friend int group_concat_key_cmp_with_distinct_and_order(void* arg,
+							byte* key1,
+							byte* key2);
+  friend int dump_leaf_key(byte* key, uint32 count __attribute__((unused)),
+                  Item_func_group_concat *group_concat_item);
+
  public:
   String result;
   String *separator;
   TREE tree_base;
   TREE *tree;
   TABLE *table;
-  Item **expr;
   ORDER **order;
   TABLE_LIST *tables_list;
   ulong group_concat_max_len;
@@ -659,9 +674,6 @@ class Item_func_group_concat : public Item_sum
   uint arg_count_field;
   uint arg_show_fields;
   uint count_cut_values;
-  bool tree_mode, distinct;
-  bool warning_for_row;
-  bool always_null;
   /*
     Following is 0 normal object and pointer to original one for copy 
     (to correctly free resources)
@@ -677,10 +689,14 @@ class Item_func_group_concat : public Item_sum
      max_elements_in_tree(item.max_elements_in_tree),
      warning(item.warning),
      warning_available(item.warning_available),
+     key_length(item.key_length), 
+     rec_offset(item.rec_offset), 
+     tree_mode(0),
+     distinct(item.distinct),
+     warning_for_row(item.warning_for_row),
      separator(item.separator),
      tree(item.tree),
      table(item.table),
-     expr(item.expr),
      order(item.order),
      tables_list(item.tables_list),
      group_concat_max_len(item.group_concat_max_len),
@@ -689,9 +705,6 @@ class Item_func_group_concat : public Item_sum
      arg_count_field(item.arg_count_field),
      arg_show_fields(item.arg_show_fields),
      count_cut_values(item.count_cut_values),
-     tree_mode(0),
-     distinct(item.distinct),
-     warning_for_row(item.warning_for_row),
      original(&item)
     {
      quick_group = 0;

sql/sql_select.cc

@@ -1227,7 +1227,7 @@ JOIN::exec()
     {
       // Some tables may have been const
       curr_join->tmp_having->update_used_tables();
-      JOIN_TAB *table= &curr_join->join_tab[const_tables];
+      JOIN_TAB *table= &curr_join->join_tab[curr_join->const_tables];
       table_map used_tables= curr_join->const_table_map | table->table->map;
 
       Item* sort_table_cond= make_cond_for_table(curr_join->tmp_having,
@@ -1263,7 +1263,7 @@ JOIN::exec()
 	  We can abort sorting after thd->select_limit rows if we there is no
 	  WHERE clause for any tables after the sorted one.
 	*/
-	JOIN_TAB *table= &curr_join->join_tab[const_tables+1];
+	JOIN_TAB *table= &curr_join->join_tab[curr_join->const_tables+1];
 	JOIN_TAB *end_table= &curr_join->join_tab[tables];
 	for (; table < end_table ; table++)
 	{