Merge

BitKeeper/etc/logging_ok:
  auto-union
innobase/trx/trx0trx.c:
  Auto merged
mysql-test/r/ctype_collate.result:
  Auto merged
mysql-test/r/func_system.result:
  Auto merged
mysql-test/r/type_blob.result:
  Auto merged
sql/ha_innodb.cc:
  Auto merged
sql/item.cc:
  Auto merged
sql/item.h:
  Auto merged
sql/item_create.cc:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/item_strfunc.cc:
  Auto merged
sql/item_strfunc.h:
  Auto merged
sql/opt_sum.cc:
  Auto merged
innobase/ut/ut0mem.c:
  e
  merge from 4.1
mysql-test/r/func_group.result:
  merge from 4.1
mysql-test/r/func_str.result:
  merge from 4.1
mysql-test/t/func_group.test:
  merge from 4.1

BitKeeper/etc/logging_ok

@@ -71,6 +71,7 @@ hf@deer.(none)
 hf@deer.mysql.r18.ru
 hf@genie.(none)
 igor@hundin.mysql.fi
+igor@linux.local
 igor@rurik.mysql.com
 ingo@mysql.com
 jan@hundin.mysql.fi

innobase/trx/trx0trx.c

@@ -262,6 +262,20 @@ trx_free(
 		putc('\n', stderr);
 	}
 
+	if (trx->n_mysql_tables_in_use != 0
+	    || trx->mysql_n_tables_locked != 0) {
+
+		ut_print_timestamp(stderr);
+		fprintf(stderr,
+"  InnoDB: Error: MySQL is freeing a thd\n"
+"InnoDB: though trx->n_mysql_tables_in_use is %lu\n"
+"InnoDB: and trx->mysql_n_tables_locked is %lu.\n",
+			(ulong)trx->n_mysql_tables_in_use,
+			(ulong)trx->mysql_n_tables_locked);
+
+		trx_print(stderr, trx);		
+	}
+
 	ut_a(trx->magic_n == TRX_MAGIC_N);
 
 	trx->magic_n = 11112222;
@@ -273,9 +287,6 @@ trx_free(
 	ut_a(trx->insert_undo == NULL); 
 	ut_a(trx->update_undo == NULL); 
 	
-	ut_a(trx->n_mysql_tables_in_use == 0);
-	ut_a(trx->mysql_n_tables_locked == 0);
-	
 	if (trx->undo_no_arr) {
 		trx_undo_arr_free(trx->undo_no_arr);
 	}

innobase/ut/ut0mem.c

@@ -14,6 +14,7 @@ Created 5/11/1994 Heikki Tuuri
 
 #include "mem0mem.h"
 #include "os0sync.h"
+#include "os0thread.h"
 
 /* This struct is placed first in every allocated memory block */
 typedef struct ut_mem_block_struct ut_mem_block_t;
@@ -66,6 +67,7 @@ ut_malloc_low(
 	ibool	assert_on_error) /* in: if TRUE, we crash mysqld if the memory
 				cannot be allocated */
 {
+	ulint	retry_count	= 0;
 	void*	ret;
 
 	ut_ad((sizeof(ut_mem_block_t) % 8) == 0); /* check alignment ok */
@@ -73,24 +75,26 @@ ut_malloc_low(
 	if (!ut_mem_block_list_inited) {
 	        ut_mem_block_list_init();
 	}
-
+retry:
 	os_fast_mutex_lock(&ut_list_mutex);
 
 	ret = malloc(n + sizeof(ut_mem_block_t));
 
-	if (ret == NULL) {
+	if (ret == NULL && retry_count < 60) {
+		if (retry_count == 0) {
 			ut_print_timestamp(stderr);
+
 			fprintf(stderr,
-		"  InnoDB: Fatal error: cannot allocate %lu bytes of\n"
+		"  InnoDB: Error: cannot allocate %lu bytes of\n"
 		"InnoDB: memory with malloc! Total allocated memory\n"
 		"InnoDB: by InnoDB %lu bytes. Operating system errno: %lu\n"
-		"InnoDB: Cannot continue operation!\n"
 		"InnoDB: Check if you should increase the swap file or\n"
 		"InnoDB: ulimits of your operating system.\n"
 		"InnoDB: On FreeBSD check you have compiled the OS with\n"
 		"InnoDB: a big enough maximum process size.\n"
 		"InnoDB: Note that in most 32-bit computers the process\n"
 		"InnoDB: memory space is limited to 2 GB or 4 GB.\n",
+		"InnoDB: We keep retrying the allocation for 60 seconds...\n",
 		                  (ulong) n, (ulong) ut_total_allocated_memory,
 #ifdef __WIN__
 			(ulong) GetLastError()
@@ -98,7 +102,21 @@ ut_malloc_low(
 			(ulong) errno
 #endif
 			);
+		}
+
+		os_fast_mutex_unlock(&ut_list_mutex);
+
+		/* Sleep for a second and retry the allocation; maybe this is
+		just a temporary shortage of memory */
 
+		os_thread_sleep(1000000);
+		
+		retry_count++;
+
+		goto retry;
+	}
+
+	if (ret == NULL) {
 		/* Flush stderr to make more probable that the error
 		message gets in the error file before we generate a seg
 		fault */
@@ -113,8 +131,10 @@ ut_malloc_low(
 		by graceful exit handling in ut_a(). */
 #if (!defined __NETWARE__) 
 		if (assert_on_error) {
+			ut_print_timestamp(stderr);
+
 			fprintf(stderr,
-		"InnoDB: We now intentionally generate a seg fault so that\n"
+		"  InnoDB: We now intentionally generate a seg fault so that\n"
 		"InnoDB: on Linux we get a stack trace.\n");
 
 			if (*ut_mem_null_ptr) ut_mem_null_ptr = 0;

mysql-test/r/ctype_collate.result

@@ -514,7 +514,7 @@ Variable_name	Value
 character_set_client	latin1
 SELECT charset('a'),collation('a'),coercibility('a'),'a'='A';
 charset('a')	collation('a')	coercibility('a')	'a'='A'
-latin1	latin1_swedish_ci	3	1
+latin1	latin1_swedish_ci	4	1
 explain extended SELECT charset('a'),collation('a'),coercibility('a'),'a'='A';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
@@ -525,7 +525,7 @@ SHOW VARIABLES LIKE 'collation_client';
 Variable_name	Value
 SELECT charset('a'),collation('a'),coercibility('a'),'a'='A';
 charset('a')	collation('a')	coercibility('a')	'a'='A'
-latin1	latin1_swedish_ci	3	1
+latin1	latin1_swedish_ci	4	1
 SET CHARACTER SET 'DEFAULT';
 ERROR 42000: Unknown character set: 'DEFAULT'
 DROP TABLE t1;

mysql-test/r/func_group.result

@@ -831,4 +831,29 @@ select id, stddev_pop(value1), var_pop(value1), stddev_samp(value1), var_samp(va
 id	stddev_pop(value1)	var_pop(value1)	stddev_samp(value1)	var_samp(value1)
 1	0.816497	0.666667	1.000000	1.000000
 2	1.118034	1.250000	1.290994	1.666667
+CREATE TABLE t1(
+id int PRIMARY KEY,
+a  int,
+b  int,
+INDEX i_b_id(a,b,id),
+INDEX i_id(a,id)
+);
+INSERT INTO t1 VALUES 
+(1,1,4), (2,2,1), (3,1,3), (4,2,1), (5,1,1);
+SELECT MAX(id) FROM t1 WHERE id < 3 AND a=2 AND b=6;
+MAX(id)
+NULL
+DROP TABLE t1;
+CREATE TABLE t1(
+id int PRIMARY KEY,
+a  int,
+b  int,
+INDEX i_id(a,id),
+INDEX i_b_id(a,b,id)
+);
+INSERT INTO t1 VALUES 
+(1,1,4), (2,2,1), (3,1,3), (4,2,1), (5,1,1);
+SELECT MAX(id) FROM t1 WHERE id < 3 AND a=2 AND b=6;
+MAX(id)
+NULL
 DROP TABLE t1;

mysql-test/r/func_system.result

@@ -68,3 +68,11 @@ drop table t1;
 select TRUE,FALSE,NULL;
 TRUE	FALSE	NULL
 1	0	NULL
+create table t1 (a char(10)) character set latin1;
+select * from t1 where a=version();
+a
+select * from t1 where a=database();
+a
+select * from t1 where a=user();
+a
+drop table t1;

mysql-test/r/type_blob.result

@@ -509,7 +509,7 @@ charset(load_file('../../std_data/words.dat')),
 collation(load_file('../../std_data/words.dat')),
 coercibility(load_file('../../std_data/words.dat'));
 charset(load_file('../../std_data/words.dat'))	collation(load_file('../../std_data/words.dat'))	coercibility(load_file('../../std_data/words.dat'))
-binary	binary	3
+binary	binary	4
 explain extended select 
 charset(load_file('../../std_data/words.dat')),
 collation(load_file('../../std_data/words.dat')),

mysql-test/t/func_group.test

@@ -536,4 +536,32 @@ drop table t1, t2, t3;
 CREATE TABLE t1 (id int(11),value1 float(10,2));
 INSERT INTO t1 VALUES (1,0.00),(1,1.00), (1,2.00), (2,10.00), (2,11.00), (2,12.00), (2,13.00);
 select id, stddev_pop(value1), var_pop(value1), stddev_samp(value1), var_samp(value1) from t1 group by id;
+#
+# Bug 8893: wrong result for min/max optimization with 2 indexes
+#
+
+CREATE TABLE t1(
+  id int PRIMARY KEY,
+  a  int,
+  b  int,
+  INDEX i_b_id(a,b,id),
+  INDEX i_id(a,id)
+);
+INSERT INTO t1 VALUES 
+  (1,1,4), (2,2,1), (3,1,3), (4,2,1), (5,1,1);
+SELECT MAX(id) FROM t1 WHERE id < 3 AND a=2 AND b=6;
+DROP TABLE t1;
+
+# change the order of the last two index definitions
+
+CREATE TABLE t1(
+  id int PRIMARY KEY,
+  a  int,
+  b  int,
+  INDEX i_id(a,id),
+  INDEX i_b_id(a,b,id)
+);
+INSERT INTO t1 VALUES 
+  (1,1,4), (2,2,1), (3,1,3), (4,2,1), (5,1,1);
+SELECT MAX(id) FROM t1 WHERE id < 3 AND a=2 AND b=6;
 DROP TABLE t1;

mysql-test/t/func_system.test

@@ -30,3 +30,12 @@ show create table t1;
 drop table t1;
 
 select TRUE,FALSE,NULL;
+
+#
+# Bug#8291 Illegal collation mix with USER() function
+#
+create table t1 (a char(10)) character set latin1;
+select * from t1 where a=version();
+select * from t1 where a=database();
+select * from t1 where a=user();
+drop table t1;

sql/ha_innodb.cc

@@ -2632,6 +2632,7 @@ ha_innobase::write_row(
                 table->timestamp_field->set_time();
 
 	if ((user_thd->lex->sql_command == SQLCOM_ALTER_TABLE
+	    || user_thd->lex->sql_command == SQLCOM_OPTIMIZE
 	    || user_thd->lex->sql_command == SQLCOM_CREATE_INDEX
 	    || user_thd->lex->sql_command == SQLCOM_DROP_INDEX)
 	    && num_write_row >= 10000) {

sql/item.cc

@@ -724,7 +724,6 @@ void Item::split_sum_func2(THD *thd, Item **ref_pointer_array,
 */
 bool DTCollation::aggregate(DTCollation &dt, uint flags)
 {
-  nagg++;
   if (!my_charset_same(collation, dt.collation))
   {
     /* 
@@ -740,7 +739,6 @@ bool DTCollation::aggregate(DTCollation &dt, uint flags)
       else
       {
 	set(dt); 
-        strong= nagg;
       }
     }
     else if (dt.collation == &my_charset_bin)
@@ -748,7 +746,6 @@ bool DTCollation::aggregate(DTCollation &dt, uint flags)
       if (dt.derivation <= derivation)
       {
         set(dt);
-        strong= nagg;
       }
       else
        ; // Do nothing
@@ -764,20 +761,18 @@ bool DTCollation::aggregate(DTCollation &dt, uint flags)
              dt.collation->state & MY_CS_UNICODE)
     {
       set(dt);
-      strong= nagg;
     }
     else if ((flags & MY_COLL_ALLOW_COERCIBLE_CONV) &&
              derivation < dt.derivation &&
-             dt.derivation >= DERIVATION_COERCIBLE)
+             dt.derivation >= DERIVATION_SYSCONST)
     {
       // Do nothing;
     }
     else if ((flags & MY_COLL_ALLOW_COERCIBLE_CONV) &&
              dt.derivation < derivation &&
-             derivation >= DERIVATION_COERCIBLE)
+             derivation >= DERIVATION_SYSCONST)
     {
       set(dt);
-      strong= nagg;
     }
     else
     {
@@ -793,7 +788,6 @@ bool DTCollation::aggregate(DTCollation &dt, uint flags)
   else if (dt.derivation < derivation)
   {
     set(dt);
-    strong= nagg;
   }
   else
   { 

sql/item.h

@@ -32,8 +32,9 @@ class Item_field;
 
 enum Derivation
 {
-  DERIVATION_IGNORABLE= 4,
-  DERIVATION_COERCIBLE= 3,
+  DERIVATION_IGNORABLE= 5,
+  DERIVATION_COERCIBLE= 4,
+  DERIVATION_SYSCONST= 3,
   DERIVATION_IMPLICIT= 2,
   DERIVATION_NONE= 1,
   DERIVATION_EXPLICIT= 0
@@ -62,22 +63,16 @@ class DTCollation {
 public:
   CHARSET_INFO     *collation;
   enum Derivation derivation;
-  uint nagg;    // Total number of aggregated collations.
-  uint strong;  // Number of the strongest collation.
   
   DTCollation()
   {
     collation= &my_charset_bin;
     derivation= DERIVATION_NONE;
-    nagg= 0;
-    strong= 0;
   }
   DTCollation(CHARSET_INFO *collation_arg, Derivation derivation_arg)
   {
     collation= collation_arg;
     derivation= derivation_arg;
-    nagg= 0;
-    strong= 0;
   }
   void set(DTCollation &dt)
   { 
@@ -103,6 +98,7 @@ public:
       case DERIVATION_IGNORABLE: return "IGNORABLE";
       case DERIVATION_COERCIBLE: return "COERCIBLE";
       case DERIVATION_IMPLICIT:  return "IMPLICIT";
+      case DERIVATION_SYSCONST:  return "SYSCONST";
       case DERIVATION_EXPLICIT:  return "EXPLICIT";
       case DERIVATION_NONE:      return "NONE";
       default: return "UNKNOWN";

sql/item_create.cc

@@ -434,7 +434,7 @@ Item *create_func_version(void)
 {
   return new Item_static_string_func("version()", server_version,
 			 (uint) strlen(server_version),
-			 system_charset_info, DERIVATION_IMPLICIT);
+			 system_charset_info, DERIVATION_SYSCONST);
 }
 
 Item *create_func_weekday(Item* a)

sql/item_func.cc

@@ -82,8 +82,6 @@ bool Item_func::agg_arg_collations(DTCollation &c, Item **av, uint count,
                                    uint flags)
 {
   uint i;
-  c.nagg= 0;
-  c.strong= 0;
   c.set(av[0]->collation);
   for (i= 1; i < count; i++)
   {

sql/item_strfunc.cc

@@ -1515,6 +1515,23 @@ String *Item_func_decode::val_str(String *str)
 }
 
 
+Item *Item_func_sysconst::safe_charset_converter(CHARSET_INFO *tocs)
+{
+  Item_string *conv;
+  uint conv_errors;
+  String tmp, cstr, *ostr= val_str(&tmp);
+  cstr.copy(ostr->ptr(), ostr->length(), ostr->charset(), tocs, &conv_errors);
+  if (conv_errors || !(conv= new Item_string(cstr.ptr(), cstr.length(),
+                                             cstr.charset(),
+                                             collation.derivation)))
+  {
+    return NULL;
+  }
+  conv->str_value.copy();
+  return conv;
+}
+
+
 String *Item_func_database::val_str(String *str)
 {
   DBUG_ASSERT(fixed == 1);

sql/item_strfunc.h

@@ -337,10 +337,18 @@ public:
 };
 
 
-class Item_func_database :public Item_str_func
+class Item_func_sysconst :public Item_str_func
 {
 public:
-  Item_func_database() { collation.set(system_charset_info,DERIVATION_IMPLICIT); }
+  Item_func_sysconst()
+  { collation.set(system_charset_info,DERIVATION_SYSCONST); }
+  Item *safe_charset_converter(CHARSET_INFO *tocs);
+};
+
+class Item_func_database :public Item_func_sysconst
+{
+public:
+  Item_func_database() :Item_func_sysconst() {}
   String *val_str(String *);
   void fix_length_and_dec()
   {
@@ -350,10 +358,10 @@ public:
   const char *func_name() const { return "database"; }
 };
 
-class Item_func_user :public Item_str_func
+class Item_func_user :public Item_func_sysconst
 {
 public:
-  Item_func_user() { collation.set(system_charset_info, DERIVATION_IMPLICIT); }
+  Item_func_user() :Item_func_sysconst() {}
   String *val_str(String *);
   void fix_length_and_dec() 
   { 

sql/opt_sum.cc

@@ -638,7 +638,6 @@ static bool find_key_for_maxmin(bool max_fl, TABLE_REF *ref,
 {
   if (!(field->flags & PART_KEY_FLAG))
     return 0;                                        // Not key field
-  *prefix_len= 0;
 
   TABLE *table= field->table;
   uint idx= 0;
@@ -651,6 +650,7 @@ static bool find_key_for_maxmin(bool max_fl, TABLE_REF *ref,
     KEY_PART_INFO *part,*part_end;
     key_part_map key_part_to_use= 0;
     uint jdx= 0;
+    *prefix_len= 0;
     for (part= keyinfo->key_part, part_end= part+keyinfo->key_parts ;
          part != part_end ;
          part++, jdx++, key_part_to_use= (key_part_to_use << 1) | 1)