Merge work:/home/bk/mysql-4.0 into hundin.mysql.fi:/my/bk/mysql-4.0

12 files changed, 138 insertions, 116 deletions

diff --git a/sql/Makefile.am b/sql/Makefile.am
index abde8b3a738..0cd070f9ffb 100644
--- a/sql/Makefile.am
+++ b/sql/Makefile.am
@@ -57,7 +57,7 @@ noinst_HEADERS =	item.h item_func.h item_sum.h item_cmpfunc.h \
 			sql_select.h structs.h table.h sql_udf.h hash_filo.h\
 			lex.h lex_symbol.h sql_acl.h sql_crypt.h md5.h \
                         log_event.h mini_client.h sql_repl.h slave.h \
-			stacktrace.h sql_sort.h
+			stacktrace.h sql_sort.h mysql_embed.h
 mysqld_SOURCES =	sql_lex.cc sql_handler.cc \
 			item.cc item_sum.cc item_buff.cc item_func.cc \
 			item_cmpfunc.cc item_strfunc.cc item_timefunc.cc \
diff --git a/sql/item.cc b/sql/item.cc
index d5961fe1733..dbb9c4ec38d 100644
--- a/sql/item.cc
+++ b/sql/item.cc
@@ -298,13 +298,21 @@ bool Item::fix_fields(THD *thd,
 
 bool Item_field::fix_fields(THD *thd,TABLE_LIST *tables)
 {
-  if (!field)
+  if (!field)					// If field is not checked
   {
     Field *tmp;
     if (!(tmp=find_field_in_tables(thd,this,tables)))
       return 1;
     set_field(tmp);
   }
+  else if (thd && thd->set_query_id && field->query_id != thd->query_id)
+  {
+    /* We only come here in unions */
+    TABLE *table=field->table;
+    field->query_id=thd->query_id;
+    table->used_fields++;
+    table->used_keys&=field->part_of_key;
+  }
   return 0;
 }
 
diff --git a/sql/log_event.cc b/sql/log_event.cc
index 83fac4a7706..2627e9a3997 100644
--- a/sql/log_event.cc
+++ b/sql/log_event.cc
@@ -469,7 +469,7 @@ Log_event* Log_event::read_log_event(IO_CACHE* file)
     error = "read error";
     goto err;
   }
-  if((res = read_log_event(buf, data_len)))
+  if ((res = read_log_event(buf, data_len, &error)))
     res->register_temp_buf(buf);
 err:
   UNLOCK_MUTEX;
@@ -481,10 +481,11 @@ err:
   return res;
 }
 
-Log_event* Log_event::read_log_event(const char* buf, int event_len)
+Log_event* Log_event::read_log_event(const char* buf, int event_len,
+				     const char **error)
 {
-  if(event_len < EVENT_LEN_OFFSET ||
-     (uint)event_len != uint4korr(buf+EVENT_LEN_OFFSET))
+  if (event_len < EVENT_LEN_OFFSET ||
+      (uint)event_len != uint4korr(buf+EVENT_LEN_OFFSET))
     return NULL; // general sanity check - will fail on a partial read
   
   Log_event* ev = NULL;
@@ -531,6 +532,7 @@ Log_event* Log_event::read_log_event(const char* buf, int event_len)
   if (!ev) return 0;
   if (!ev->is_valid())
   {
+    *error= "Found invalid event in binary log";
     delete ev;
     return 0;
   }
@@ -812,80 +814,92 @@ int Load_log_event::write_data_body(IO_CACHE* file)
   if (sql_ex.write_data(file)) return 1;
   if (num_fields && fields && field_lens)
   {
-    if(my_b_write(file, (byte*)field_lens, num_fields) ||
-       my_b_write(file, (byte*)fields, field_block_len))
+    if (my_b_write(file, (byte*)field_lens, num_fields) ||
+	my_b_write(file, (byte*)fields, field_block_len))
       return 1;
   }
-  return my_b_write(file, (byte*)table_name, table_name_len + 1) ||
-     my_b_write(file, (byte*)db, db_len + 1) ||
-    my_b_write(file, (byte*)fname, fname_len);
+  return (my_b_write(file, (byte*)table_name, table_name_len + 1) ||
+	  my_b_write(file, (byte*)db, db_len + 1) ||
+	  my_b_write(file, (byte*)fname, fname_len));
 }
 
-#define WRITE_STR(name) my_b_write(file,(byte*)&name ## _len, 1) || \
-   my_b_write(file,(byte*)name,name ## _len)
-#define OLD_EX_INIT(name) old_ex.##name = *name
+
+static bool write_str(IO_CACHE *file, char *str, byte length)
+{
+  return (my_b_write(file, &length, 1) ||
+	  my_b_write(file, (byte*) str, (int) length));
+}
 
 int sql_ex_info::write_data(IO_CACHE* file)
 {
   if (new_format())
   {
-    return WRITE_STR(field_term) || WRITE_STR(enclosed) ||
-      WRITE_STR(line_term) || WRITE_STR(line_start) ||
-      WRITE_STR(escaped) || my_b_write(file,(byte*)&opt_flags,1);
+    return (write_str(file, field_term, field_term_len) ||
+	    write_str(file, enclosed,   enclosed_len) ||
+	    write_str(file, line_term,  line_term_len) ||
+	    write_str(file, line_start, line_start_len) ||
+	    write_str(file, escaped,    escaped_len) ||
+	    my_b_write(file,(byte*) &opt_flags,1));
   }
   else
   {
     old_sql_ex old_ex;
-    OLD_EX_INIT(field_term);
-    OLD_EX_INIT(enclosed);
-    OLD_EX_INIT(line_term);
-    OLD_EX_INIT(line_start);
-    OLD_EX_INIT(escaped);
-    old_ex.opt_flags = opt_flags;
-    old_ex.empty_flags = empty_flags;
-    return my_b_write(file,(byte*)&old_ex,sizeof(old_ex));
+    old_ex.field_term= *field_term;
+    old_ex.enclosed=   *enclosed;
+    old_ex.line_term=  *line_term;
+    old_ex.line_start= *line_start;
+    old_ex.escaped=    *escaped;
+    old_ex.opt_flags=  opt_flags;
+    old_ex.empty_flags=empty_flags;
+    return my_b_write(file, (byte*) &old_ex, sizeof(old_ex));
   }
 }
 
-#define READ_STR(name) name ## _len = *buf++;\
- if (buf >= buf_end) return 0;\
- name = buf; \
- buf += name ## _len; \
- if (buf >= buf_end) return 0;
-
-#define READ_OLD_STR(name) name ## _len = 1; \
-  name = buf++; \
-  if (buf >= buf_end) return 0; 
-
-#define FIX_OLD_LEN(name,NAME) if (empty_flags & NAME ## _EMPTY) \
-  name ## _len = 0
+static inline int read_str(char * &buf, char *buf_end, char * &str,
+			   uint8 &len)
+{
+  if (buf + (uint) (uchar) *buf >= buf_end)
+    return 1;
+  len = (uint8) *buf;
+  str= buf+1;
+  buf+= (uint) len+1;
+  return 0;
+}
 
 char* sql_ex_info::init(char* buf,char* buf_end,bool use_new_format)
 {
   cached_new_format = use_new_format;
   if (use_new_format)
   {
-    READ_STR(field_term);
-    READ_STR(enclosed);
-    READ_STR(line_term);
-    READ_STR(line_start);
-    READ_STR(escaped);
+    empty_flags=0;
+    if (read_str(buf, buf_end, field_term, field_term_len) ||
+	read_str(buf, buf_end, enclosed,   enclosed_len) ||
+	read_str(buf, buf_end, line_term,  line_term_len) ||
+	read_str(buf, buf_end, line_start, line_start_len) ||
+	read_str(buf, buf_end, escaped,	   escaped_len))
+      return 0;
     opt_flags = *buf++;
   }
   else
   {
-    READ_OLD_STR(field_term);
-    READ_OLD_STR(enclosed);
-    READ_OLD_STR(line_term);
-    READ_OLD_STR(line_start);
-    READ_OLD_STR(escaped);
+    field_term_len= enclosed_len= line_term_len= line_start_len= escaped_len=1;
+    *field_term=*buf++;
+    *enclosed=	*buf++;
+    *line_term= *buf++;
+    *line_start=*buf++;
+    *escaped=	*buf++;
     opt_flags = *buf++;
-    empty_flags = *buf++;
-    FIX_OLD_LEN(field_term,FIELD_TERM);
-    FIX_OLD_LEN(enclosed,ENCLOSED);
-    FIX_OLD_LEN(line_term,LINE_TERM);
-    FIX_OLD_LEN(line_start,LINE_START);
-    FIX_OLD_LEN(escaped,ESCAPED);
+    empty_flags=*buf++;
+    if (empty_flags & FIELD_TERM_EMPTY)
+      field_term_len=0;
+    if (empty_flags & ENCLOSED_EMPTY)
+      enclosed_len=0;
+    if (empty_flags & LINE_TERM_EMPTY)
+      line_term_len=0;
+    if (empty_flags & LINE_START_EMPTY)
+      line_start_len=0;
+    if (empty_flags & ESCAPED_EMPTY)
+      escaped_len=0;
   }
   return buf;
 }
@@ -1271,6 +1285,8 @@ Create_file_log_event::Create_file_log_event(const char* buf, int len):
   block = (char*)buf + block_offset;
   block_len = len - block_offset;
 }
+
+
 #ifdef MYSQL_CLIENT
 void Create_file_log_event::print(FILE* file, bool short_form,
 				  char* last_db)
@@ -1553,20 +1569,16 @@ int Load_log_event::exec_event(NET* net, struct st_master_info* mi)
 	handle_dup = DUP_REPLACE;
       sql_exchange ex((char*)fname, sql_ex.opt_flags &&
 		      DUMPFILE_FLAG );
-      
-#define SET_EX(name) String name(sql_ex.name,sql_ex.name ## _len);\
- ex.name = &name;
-
-      SET_EX(field_term);
-      SET_EX(enclosed);
-      SET_EX(line_term);
-      SET_EX(line_start);
-      SET_EX(escaped);
+      String field_term(sql_ex.field_term,sql_ex.field_term_len);
+      String enclosed(sql_ex.enclosed,sql_ex.enclosed_len);
+      String line_term(sql_ex.line_term,sql_ex.line_term_len);
+      String line_start(sql_ex.line_start,sql_ex.line_start_len);
+      String escaped(sql_ex.escaped,sql_ex.escaped_len);
 	    
       ex.opt_enclosed = (sql_ex.opt_flags & OPT_ENCLOSED_FLAG);
-      if(sql_ex.empty_flags & FIELD_TERM_EMPTY)
+      if (sql_ex.empty_flags & FIELD_TERM_EMPTY)
 	ex.field_term->length(0);
-	    
+
       ex.skip_lines = skip_lines;
       List<Item> fields;
       set_fields(fields);
@@ -1862,10 +1874,3 @@ err:
 
 
 #endif
-
-
-
-
-
-
-
diff --git a/sql/log_event.h b/sql/log_event.h
index d938bced742..71f0f2a8575 100644
--- a/sql/log_event.h
+++ b/sql/log_event.h
@@ -272,7 +272,8 @@ public:
 #else // avoid having to link mysqlbinlog against libpthread
   static Log_event* read_log_event(IO_CACHE* file);
 #endif  
-  static Log_event* read_log_event(const char* buf, int event_len);
+  static Log_event* read_log_event(const char* buf, int event_len,
+				   const char **error);
   const char* get_type_str();
 
 #ifndef MYSQL_CLIENT
@@ -567,9 +568,10 @@ public:
   uint file_id;
 #ifndef MYSQL_CLIENT
   Create_file_log_event(THD* thd, sql_exchange* ex, const char* db_arg,
-			       const char* table_name_arg,
-		 List<Item>& fields_arg, enum enum_duplicates handle_dup,
-		       char* block_arg, uint block_len_arg);
+			const char* table_name_arg,
+			List<Item>& fields_arg,
+			enum enum_duplicates handle_dup,
+			char* block_arg, uint block_len_arg);
 #endif  
   
   Create_file_log_event(const char* buf, int event_len);
diff --git a/sql/mysql_embed.h b/sql/mysql_embed.h
new file mode 100644
index 00000000000..4bfaca547a8
--- /dev/null
+++ b/sql/mysql_embed.h
@@ -0,0 +1,26 @@
+/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+/* Defines that are unique to the embedded version of MySQL */
+
+#ifdef EMBEDDED_LIBRARY
+
+/* Things we don't need in the embedded version of MySQL */
+
+#undef HAVE_PSTACK				/* No stacktrace */
+#undef HAVE_DLOPEN				/* No udf functions */
+
+#endif /* EMBEDDED_LIBRARY */
diff --git a/sql/mysql_priv.h b/sql/mysql_priv.h
index 7151f43904f..34fae62ad56 100644
--- a/sql/mysql_priv.h
+++ b/sql/mysql_priv.h
@@ -18,9 +18,10 @@
 #define _MYSQL_PRIV_H
 
 #include <my_global.h>
+#include "mysql_embed.h"
 #include <my_sys.h>
 #include <m_string.h>
-#include "mysql_version.h"
+#include <mysql_version.h>
 #include <hash.h>
 #include <signal.h>
 #include <thr_lock.h>
diff --git a/sql/opt_sum.cc b/sql/opt_sum.cc
index c16c0d919d4..182fb6cf362 100644
--- a/sql/opt_sum.cc
+++ b/sql/opt_sum.cc
@@ -305,7 +305,7 @@ static bool find_range_key(TABLE_REF *ref, Field* field, COND *cond)
       key>>=1;
     ref->key_length=0;
     ref->key=idx;
-    if (field->part_of_key & ((table_map) 1 << idx))
+    if (field->part_of_key & ((key_map) 1 << idx))
     {
       table->key_read=1;
       table->file->extra(HA_EXTRA_KEYREAD);
@@ -350,7 +350,7 @@ static bool find_range_key(TABLE_REF *ref, Field* field, COND *cond)
       {
 	ref->key_length= (uint) (key_ptr-ref->key_buff);
 	ref->key=idx;
-	if (field->part_of_key & ((table_map) 1 << idx))
+	if (field->part_of_key & ((key_map) 1 << idx))
 	{
 	  table->key_read=1;
 	  table->file->extra(HA_EXTRA_KEYREAD);
diff --git a/sql/slave.cc b/sql/slave.cc
index 1a6a0910f54..a1b5045efd4 100644
--- a/sql/slave.cc
+++ b/sql/slave.cc
@@ -934,8 +934,9 @@ point. If you are sure that your master is ok, run this query manually on the\
 
 static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
 {
+  const char *error_msg;
   Log_event * ev = Log_event::read_log_event((const char*)net->read_pos + 1,
-					     event_len);
+					     event_len, &error_msg);
   if (ev)
   {
     int type_code = ev->get_type_code();
diff --git a/sql/sql_base.cc b/sql/sql_base.cc
index 41093452984..89910d3745e 100644
--- a/sql/sql_base.cc
+++ b/sql/sql_base.cc
@@ -160,7 +160,7 @@ OPEN_TABLE_LIST *list_open_tables(THD *thd, const char *wild)
     if (table)
       continue;
     if (!(*start_list = (OPEN_TABLE_LIST *)
-	  sql_alloc(sizeof(OPEN_TABLE_LIST)+entry->key_length)))
+	  sql_alloc(sizeof(*start_list)+entry->key_length)))
     {
       open_list=0;				// Out of memory
       break;
@@ -172,6 +172,7 @@ OPEN_TABLE_LIST *list_open_tables(THD *thd, const char *wild)
     (*start_list)->locked= entry->locked_by_name ? 1 : 0;
     start_list= &(*start_list)->next;
   }
+  *start_list=0;
   VOID(pthread_mutex_unlock(&LOCK_open));
   DBUG_RETURN(open_list);
 }
@@ -1579,13 +1580,7 @@ Field *find_field_in_table(THD *thd,TABLE *table,const char *name,uint length,
     {
       field->query_id=thd->query_id;
       table->used_fields++;
-      if (field->part_of_key)
-      {
-	if (!(field->part_of_key & table->ref_primary_key))
-	  table->used_keys&=field->part_of_key;
-      }
-      else
-	table->used_keys=0;
+      table->used_keys&=field->part_of_key;
     }
     else
       thd->dupp_field=field;
@@ -1655,7 +1650,8 @@ find_field_in_tables(THD *thd,Item_field *item,TABLE_LIST *tables)
   for (; tables ; tables=tables->next)
   {
     Field *field=find_field_in_table(thd,tables->table,name,length,
-				     grant_option && !thd->master_access, allow_rowid);
+				     grant_option &&
+				     !thd->master_access, allow_rowid);
     if (field)
     {
       if (field == WRONG_GRANT)
@@ -1879,14 +1875,7 @@ insert_fields(THD *thd,TABLE_LIST *tables, const char *db_name,
 	if (field->query_id == thd->query_id)
 	  thd->dupp_field=field;
 	field->query_id=thd->query_id;
-
-	if (field->part_of_key)
-	{
-	  if (!(field->part_of_key & table->ref_primary_key))
-	    table->used_keys&=field->part_of_key;
-	}
-	else
-	  table->used_keys=0;
+	table->used_keys&=field->part_of_key;
       }
       /* All fields are used */
       table->used_fields=table->fields;
@@ -1967,20 +1956,8 @@ int setup_conds(THD *thd,TABLE_LIST *tables,COND **conds)
 	    /* Mark field used for table cache */
 	    t1->field[i]->query_id=t2->field[j]->query_id=thd->query_id;
 	    cond_and->list.push_back(tmp);
-	    if ((tmp_map=t1->field[i]->part_of_key))
-	    {
-	      if (!(tmp_map & t1->ref_primary_key))
-		t1->used_keys&=tmp_map;
-	    }
-	    else
-	      t1->used_keys=0;
-	    if ((tmp_map=t2->field[j]->part_of_key))
-	    {
-	      if (!(tmp_map & t2->ref_primary_key))
-		t2->used_keys&=tmp_map;
-	    }
-	    else
-	      t2->used_keys=0;
+	    t1->used_keys&= t1->field[i]->part_of_key;
+	    t2->used_keys&= t2->field[j]->part_of_key;
 	    break;
 	  }
 	}
diff --git a/sql/sql_union.cc b/sql/sql_union.cc
index 5dd897ee826..c0ec6c81575 100644
--- a/sql/sql_union.cc
+++ b/sql/sql_union.cc
@@ -31,7 +31,7 @@ int mysql_union(THD *thd, LEX *lex,select_result *result)
   ORDER *order;
   List<Item> item_list;
   TABLE *table;
-  TABLE_LIST *first_table, result_table_list;
+  TABLE_LIST result_table_list;
   TMP_TABLE_PARAM tmp_table_param;
   select_union *union_result;
   int res;
@@ -75,9 +75,9 @@ int mysql_union(THD *thd, LEX *lex,select_result *result)
   {
     Item *item;
     List_iterator<Item> it(lex->select_lex.item_list);
+    TABLE_LIST *first_table= (TABLE_LIST*) lex->select_lex.table_list.first;
 
     /* Create a list of items that will be in the result set */
-    first_table= (TABLE_LIST*) lex->select_lex.table_list.first;
     while ((item= it++))
       if (item_list.push_back(item))
 	DBUG_RETURN(-1);
diff --git a/sql/table.cc b/sql/table.cc
index eed4170c14a..6c2f0e27c95 100644
--- a/sql/table.cc
+++ b/sql/table.cc
@@ -455,8 +455,12 @@ int openfrm(const char *name, const char *alias, uint db_stat, uint prgflag,
 	  if (key == primary_key)
 	  {
 	    field->flags|= PRI_KEY_FLAG;
+	    /*
+	      If this field is part of the primary key and all keys contains
+	      the primary key, then we can use any key to find this column
+	    */
 	    if (ha_option & HA_PRIMARY_KEY_IN_READ_INDEX)
-	      field->part_of_key|= ((key_map) 1 << primary_key);
+	      field->part_of_key= outparam->keys_in_use;
 	  }
 	  if (field->key_length() != key_part->length)
 	  {
@@ -480,8 +484,6 @@ int openfrm(const char *name, const char *alias, uint db_stat, uint prgflag,
 	(outparam->keys_in_use & ((key_map) 1 << primary_key)))
     {
       outparam->primary_key=primary_key;
-      if (outparam->file->option_flag() & HA_PRIMARY_KEY_IN_READ_INDEX)
-	outparam->ref_primary_key= (key_map) 1 << primary_key;
       /*
 	If we are using an integer as the primary key then allow the user to
 	refer to it as '_rowid'
diff --git a/sql/table.h b/sql/table.h
index 5d50851259d..1eead0decb1 100644
--- a/sql/table.h
+++ b/sql/table.h
@@ -117,7 +117,7 @@ struct st_table {
   byte		*record_pointers;		/* If sorted in memory */
   ha_rows	found_records;			/* How many records in sort */
   ORDER		*group;
-  key_map	quick_keys, used_keys, ref_primary_key;
+  key_map	quick_keys, used_keys;
   ha_rows	quick_rows[MAX_KEY];
   uint		quick_key_parts[MAX_KEY];
   key_part_map  const_key_parts[MAX_KEY];