Merge epotemkin@bk-internal.mysql.com:/home/bk/mysql-5.0

into  moonbone.local:/work/tmp_merge-5.0-opt-mysql

mysql-test/r/func_str.result

@@ -1038,6 +1038,21 @@ select * from t1 where f1='test' and (f2= sha("TEST") or f2= sha("test"));
 f1	f2
 test	a94a8fe5ccb19ba61c4c0873d391e987982fbbd3
 drop table t1;
+CREATE TABLE t1 (a varchar(10));
+INSERT INTO t1 VALUES ('abc'), ('xyz');
+SELECT a, CONCAT(a,' ',a) AS c FROM t1
+HAVING LEFT(c,LENGTH(c)-INSTR(REVERSE(c)," ")) = a;
+a	c
+abc	abc abc
+xyz	xyz xyz
+SELECT a, CONCAT(a,' ',a) AS c FROM t1
+HAVING LEFT(CONCAT(a,' ',a),
+LENGTH(CONCAT(a,' ',a))-
+INSTR(REVERSE(CONCAT(a,' ',a))," ")) = a;
+a	c
+abc	abc abc
+xyz	xyz xyz
+DROP TABLE t1;
 End of 4.1 tests
 create table t1 (d decimal default null);
 insert into t1 values (null);

mysql-test/r/odbc.result

@@ -14,3 +14,14 @@ explain select * from t1 where b is null;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
 drop table t1;
+CREATE TABLE t1 (a INT AUTO_INCREMENT PRIMARY KEY);
+INSERT INTO t1 VALUES (NULL);
+SELECT sql_no_cache a, last_insert_id() FROM t1 WHERE a IS NULL;
+a	last_insert_id()
+1	1
+SELECT sql_no_cache a, last_insert_id() FROM t1 WHERE a IS NULL;
+a	last_insert_id()
+SELECT sql_no_cache a, last_insert_id() FROM t1;
+a	last_insert_id()
+1	1
+DROP TABLE t1;

mysql-test/r/rpl_insert_id.result

@@ -74,6 +74,19 @@ SET FOREIGN_KEY_CHECKS=0;
 INSERT INTO t1 VALUES (1),(1);
 ERROR 23000: Duplicate entry '1' for key 1
 drop table t1;
+create table t1(a int auto_increment, key(a));
+create table t2(a int);
+insert into t1 (a) values (null);
+insert into t2 (a) select a from t1 where a is null;
+insert into t2 (a) select a from t1 where a is null;
+select * from t2;
+a
+1
+select * from t2;
+a
+1
+drop table t1;
+drop table t2;
 drop function if exists bug15728;
 drop function if exists bug15728_insert;
 drop table if exists t1, t2;

mysql-test/r/select.result

@@ -3395,3 +3395,6 @@ a	t1.b + 0	t1.c + 0	a	t2.b + 0	c	d
 1	0	1	1	0	1	NULL
 2	0	1	NULL	NULL	NULL	NULL
 drop table t1,t2;
+SELECT 0.9888889889 * 1.011111411911;
+0.9888889889 * 1.011111411911
+0.9998769417899202067879

mysql-test/r/view.result

@@ -2735,4 +2735,31 @@ m	e
 4	a
 1	b
 DROP VIEW v1;
-DROP TABLE IF EXISTS t1,t2;
+DROP TABLE t1,t2;
+CREATE TABLE t1 (a INT NOT NULL, b INT NULL DEFAULT NULL);
+CREATE VIEW v1 AS SELECT a, b FROM t1;
+INSERT INTO v1 (b) VALUES (2);
+Warnings:
+Warning	1423	Field of view 'test.v1' underlying table doesn't have a default value
+SET SQL_MODE = STRICT_ALL_TABLES;
+INSERT INTO v1 (b) VALUES (4);
+ERROR HY000: Field of view 'test.v1' underlying table doesn't have a default value
+SET SQL_MODE = '';
+SELECT * FROM t1;
+a	b
+0	2
+DROP VIEW v1;
+DROP TABLE t1;
+CREATE TABLE t1 (firstname text, surname text);
+INSERT INTO t1 VALUES
+("Bart","Simpson"),("Milhouse","van Houten"),("Montgomery","Burns");
+CREATE VIEW v1 AS SELECT CONCAT(firstname," ",surname) AS name FROM t1;
+SELECT CONCAT(LEFT(name,LENGTH(name)-INSTR(REVERSE(name)," ")),
+LEFT(name,LENGTH(name)-INSTR(REVERSE(name)," "))) AS f1
+FROM v1;
+f1
+BartBart
+Milhouse vanMilhouse van
+MontgomeryMontgomery
+DROP VIEW v1;
+DROP TABLE t1;

mysql-test/t/func_str.test

@@ -685,6 +685,23 @@ select * from t1 where f1='test' and (f2= sha("test") or f2= sha("TEST"));
 select * from t1 where f1='test' and (f2= sha("TEST") or f2= sha("test"));
 drop table t1;
 
+#
+# Bug#18243: REVERSE changes its argument
+#
+
+CREATE TABLE t1 (a varchar(10));
+INSERT INTO t1 VALUES ('abc'), ('xyz');
+
+SELECT a, CONCAT(a,' ',a) AS c FROM t1
+  HAVING LEFT(c,LENGTH(c)-INSTR(REVERSE(c)," ")) = a;
+
+SELECT a, CONCAT(a,' ',a) AS c FROM t1
+  HAVING LEFT(CONCAT(a,' ',a),
+              LENGTH(CONCAT(a,' ',a))-
+                     INSTR(REVERSE(CONCAT(a,' ',a))," ")) = a;
+
+DROP TABLE t1;
+ 
 --echo End of 4.1 tests
 
 #

mysql-test/t/odbc.test

@@ -21,4 +21,14 @@ select * from t1 where a is null;
 explain select * from t1 where b is null;
 drop table t1;
 
+#
+# Bug #14553: NULL in WHERE resets LAST_INSERT_ID
+#
+CREATE TABLE t1 (a INT AUTO_INCREMENT PRIMARY KEY);
+INSERT INTO t1 VALUES (NULL);
+SELECT sql_no_cache a, last_insert_id() FROM t1 WHERE a IS NULL;
+SELECT sql_no_cache a, last_insert_id() FROM t1 WHERE a IS NULL;
+SELECT sql_no_cache a, last_insert_id() FROM t1;
+DROP TABLE t1;
+
 # End of 4.1 tests

mysql-test/t/rpl_insert_id.test

@@ -77,6 +77,24 @@ sync_slave_with_master;
 connection master;
 drop table t1;
 sync_slave_with_master;
+ 
+#
+# Bug#14553: NULL in WHERE resets LAST_INSERT_ID
+#
+connection master;
+create table t1(a int auto_increment, key(a));
+create table t2(a int);
+insert into t1 (a) values (null);
+insert into t2 (a) select a from t1 where a is null;
+insert into t2 (a) select a from t1 where a is null;
+select * from t2;
+sync_slave_with_master;
+connection slave;
+select * from t2;
+connection master;
+drop table t1;
+drop table t2;
+sync_slave_with_master;
 # End of 4.1 tests
 
 

mysql-test/t/select.test

@@ -2901,3 +2901,8 @@ from t1 left outer join t2 on t1.a = t2.c and t2.b <> 1
 where t1.b <> 1 order by t1.a;
 
 drop table t1,t2;
+
+#
+# Bug #20569: Garbage in DECIMAL results from some mathematical functions
+#
+SELECT 0.9888889889 * 1.011111411911;

mysql-test/t/view.test

@@ -2595,4 +2595,38 @@ CREATE TABLE t2 SELECT * FROM v1;
 SELECT * FROM t2;
 
 DROP VIEW v1;
-DROP TABLE IF EXISTS t1,t2;
+DROP TABLE t1,t2;
+
+#
+# Bug#16110: insert permitted into view col w/o default value
+#
+CREATE TABLE t1 (a INT NOT NULL, b INT NULL DEFAULT NULL);
+CREATE VIEW v1 AS SELECT a, b FROM t1;
+
+INSERT INTO v1 (b) VALUES (2);
+
+SET SQL_MODE = STRICT_ALL_TABLES;
+--error 1423
+INSERT INTO v1 (b) VALUES (4);
+SET SQL_MODE = '';
+
+SELECT * FROM t1;
+
+DROP VIEW v1;
+DROP TABLE t1;
+
+#
+# Bug #18243: expression over a view column that with the REVERSE function
+#
+
+CREATE TABLE t1 (firstname text, surname text);
+INSERT INTO t1 VALUES
+  ("Bart","Simpson"),("Milhouse","van Houten"),("Montgomery","Burns");
+
+CREATE VIEW v1 AS SELECT CONCAT(firstname," ",surname) AS name FROM t1;
+SELECT CONCAT(LEFT(name,LENGTH(name)-INSTR(REVERSE(name)," ")),
+              LEFT(name,LENGTH(name)-INSTR(REVERSE(name)," "))) AS f1
+ FROM v1;
+
+DROP VIEW v1;
+DROP TABLE t1;

sql/item.h

@@ -697,9 +697,16 @@ public:
     Any new item which can be NULL must implement this call.
   */
   virtual bool is_null() { return 0; }
+
   /*
-    it is "top level" item of WHERE clause and we do not need correct NULL
+    Inform the item that there will be no distinction between its result
-    handling
+    being FALSE or NULL.
+
+    NOTE
+      This function will be called for eg. Items that are top-level AND-parts
+      of the WHERE clause. Items implementing this function (currently
+      Item_cond_and and subquery-related item) enable special optimizations
+      when they are "top level".
   */
   virtual void top_level_item() {}
   /*

sql/item_strfunc.cc

@@ -752,44 +752,47 @@ String *Item_func_reverse::val_str(String *str)
 {
   DBUG_ASSERT(fixed == 1);
   String *res = args[0]->val_str(str);
-  char *ptr,*end;
+  char *ptr, *end, *tmp;
 
   if ((null_value=args[0]->null_value))
     return 0;
   /* An empty string is a special case as the string pointer may be null */
   if (!res->length())
     return &my_empty_string;
-  res=copy_if_not_alloced(str,res,res->length());
+  if (tmp_value.alloced_length() < res->length() &&
-  ptr = (char *) res->ptr();
+      tmp_value.realloc(res->length()))
-  end=ptr+res->length();
+  {
+    null_value= 1;
+    return 0;
+  }
+  tmp_value.length(res->length());
+  tmp_value.set_charset(res->charset());
+  ptr= (char *) res->ptr();
+  end= ptr + res->length();
+  tmp= (char *) tmp_value.ptr() + tmp_value.length();
 #ifdef USE_MB
   if (use_mb(res->charset()))
   {
-    String tmpstr;
-    tmpstr.copy(*res);
-    char *tmp = (char *) tmpstr.ptr() + tmpstr.length();
     register uint32 l;
     while (ptr < end)
     {
-      if ((l=my_ismbchar(res->charset(), ptr,end)))
+      if ((l= my_ismbchar(res->charset(),ptr,end)))
-        tmp-=l, memcpy(tmp,ptr,l), ptr+=l;
+      {
+        tmp-= l;
+        memcpy(tmp,ptr,l);
+        ptr+= l;
+      }
       else
-        *--tmp=*ptr++;
+        *--tmp= *ptr++;
     }
-    memcpy((char *) res->ptr(),(char *) tmpstr.ptr(), res->length());
   }
   else
 #endif /* USE_MB */
   {
-    char tmp;
     while (ptr < end)
-    {
+      *--tmp= *ptr++;
-      tmp=*ptr;
-      *ptr++=*--end;
-      *end=tmp;
-    }
   }
-  return res;
+  return &tmp_value;
 }
 
 

sql/item_strfunc.h

@@ -102,6 +102,7 @@ public:
 
 class Item_func_reverse :public Item_str_func
 {
+  String tmp_value;
 public:
   Item_func_reverse(Item *a) :Item_str_func(a) {}
   String *val_str(String *);

sql/sql_class.cc

@@ -269,6 +269,7 @@ THD::THD()
   tablespace_op=FALSE;
   ulong tmp=sql_rnd_with_mutex();
   randominit(&rand, tmp + (ulong) &rand, tmp + (ulong) ::query_id);
+  substitute_null_with_insert_id = FALSE;
   thr_lock_info_init(&lock_info); /* safety: will be reset after start */
   thr_lock_owner_init(&main_lock_id, &lock_info);
 }

sql/sql_class.h

@@ -1324,6 +1324,8 @@ public:
   bool	     no_errors, password, is_fatal_error;
   bool	     query_start_used, rand_used, time_zone_used;
   bool	     last_insert_id_used,insert_id_used, clear_next_insert_id;
+  /* for IS NULL => = last_insert_id() fix in remove_eq_conds() */
+  bool       substitute_null_with_insert_id;
   bool	     in_lock_tables;
   bool       query_error, bootstrap, cleanup_done;
   bool	     tmp_table_used;
@@ -1455,6 +1457,7 @@ public:
   {
     last_insert_id= id_arg;
     insert_id_used=1;
+    substitute_null_with_insert_id= TRUE;
   }
   inline ulonglong insert_id(void)
   {

sql/sql_insert.cc

@@ -755,6 +755,7 @@ static bool check_view_insertability(THD * thd, TABLE_LIST *view)
   uint used_fields_buff_size= (table->s->fields + 7) / 8;
   uchar *used_fields_buff= (uchar*)thd->alloc(used_fields_buff_size);
   MY_BITMAP used_fields;
+  bool save_set_query_id= thd->set_query_id;
   DBUG_ENTER("check_key_in_view");
 
   if (!used_fields_buff)
@@ -767,15 +768,26 @@ static bool check_view_insertability(THD * thd, TABLE_LIST *view)
   bitmap_clear_all(&used_fields);
 
   view->contain_auto_increment= 0;
+  /* 
+    we must not set query_id for fields as they're not 
+    really used in this context
+  */
+  thd->set_query_id= 0;
   /* check simplicity and prepare unique test of view */
   for (trans= trans_start; trans != trans_end; trans++)
   {
     if (!trans->item->fixed && trans->item->fix_fields(thd, &trans->item))
-      return TRUE;
+    {
+      thd->set_query_id= save_set_query_id;
+      DBUG_RETURN(TRUE);
+    }
     Item_field *field;
     /* simple SELECT list entry (field without expression) */
     if (!(field= trans->item->filed_for_view_update()))
+    {
+      thd->set_query_id= save_set_query_id;
       DBUG_RETURN(TRUE);
+    }
     if (field->field->unireg_check == Field::NEXT_NUMBER)
       view->contain_auto_increment= 1;
     /* prepare unique test */
@@ -785,6 +797,7 @@ static bool check_view_insertability(THD * thd, TABLE_LIST *view)
     */
     trans->item= field;
   }
+  thd->set_query_id= save_set_query_id;
   /* unique test */
   for (trans= trans_start; trans != trans_end; trans++)
   {

sql/sql_select.cc

@@ -7854,7 +7854,7 @@ remove_eq_conds(THD *thd, COND *cond, Item::cond_result *cond_value)
       Field *field=((Item_field*) args[0])->field;
       if (field->flags & AUTO_INCREMENT_FLAG && !field->table->maybe_null &&
 	  (thd->options & OPTION_AUTO_IS_NULL) &&
-	  thd->insert_id())
+	  thd->insert_id() && thd->substitute_null_with_insert_id)
       {
 #ifdef HAVE_QUERY_CACHE
 	query_cache_abort(&thd->net);
@@ -7873,7 +7873,7 @@ remove_eq_conds(THD *thd, COND *cond, Item::cond_result *cond_value)
           */
 	  cond->fix_fields(thd, &cond);
 	}
-	thd->insert_id(0);		// Clear for next request
+	thd->substitute_null_with_insert_id= FALSE;   // Clear for next request
       }
       /* fix to replace 'NULL' dates with '0' (shreeve@uci.edu) */
       else if (((field->type() == FIELD_TYPE_DATE) ||

strings/decimal.c

@@ -171,6 +171,7 @@ static const dec1 frac_max[DIG_PER_DEC1-1]={
         do                                                              \
         {                                                               \
           dec1 a=(from1)+(from2)+(carry);                               \
+          DBUG_ASSERT((carry) <= 1);                                    \
           if (((carry)= a >= DIG_BASE)) /* no division here! */         \
             a-=DIG_BASE;                                                \
           (to)=a;                                                       \
@@ -179,7 +180,7 @@ static const dec1 frac_max[DIG_PER_DEC1-1]={
 #define ADD2(to, from1, from2, carry)                                   \
         do                                                              \
         {                                                               \
-          dec1 a=(from1)+(from2)+(carry);                               \
+          dec2 a=((dec2)(from1))+(from2)+(carry);                       \
           if (((carry)= a >= DIG_BASE))                                 \
             a-=DIG_BASE;                                                \
           if (unlikely(a >= DIG_BASE))                                  \
@@ -187,7 +188,7 @@ static const dec1 frac_max[DIG_PER_DEC1-1]={
             a-=DIG_BASE;                                                \
             carry++;                                                    \
           }                                                             \
-          (to)=a;                                                       \
+          (to)=(dec1) a;                                                \
         } while(0)
 
 #define SUB(to, from1, from2, carry) /* to=from1-from2 */               \
@@ -1998,7 +1999,13 @@ int decimal_mul(decimal_t *from1, decimal_t *from2, decimal_t *to)
       ADD2(*buf0, *buf0, lo, carry);
       carry+=hi;
     }
-    for (; carry; buf0--)
+    if (carry)
+    {
+      if (buf0 < to->buf)
+        return E_DEC_OVERFLOW;
+      ADD2(*buf0, *buf0, 0, carry);
+    }
+    for (buf0--; carry; buf0--)
     {
       if (buf0 < to->buf)
         return E_DEC_OVERFLOW;