Better fix for CREATE TABLE IF NOT EXISTS ... SELECT

Fixed chsize() problem on windows
Extend default timeout on windows clients to 1 year (to avoid timeout problems)


include/mysql.h:
  Added client timeouts (for TCP/IP)
libmysql/libmysql.c:
  Added client timeouts (for TCP/IP)
mysql-test/r/create.result:
  More tests for CREATE TABLE IF NOT EXISTS ... SELECT
mysql-test/t/create.test:
  More tests for CREATE TABLE IF NOT EXISTS ... SELECT
mysys/my_chsize.c:
  Fix for windows
sql/handler.h:
  Remove not used field 'if_not_exists'
  Ordered fields to be more optimized for new CPU's
  Added field 'table_existed'
sql/slave.cc:
  Cleanup temporary tables when slave ends
sql/sql_class.h:
  Remove not used 'do_not_drop' field
sql/sql_insert.cc:
  Better fix for CREATE TABLE IF NOT EXISTS ... SELECT
sql/sql_table.cc:
  Better fix for CREATE TABLE IF NOT EXISTS ... SELECT

include/mysql.h

@@ -60,6 +60,9 @@ typedef int my_socket;
 extern unsigned int mysql_port;
 extern char *mysql_unix_port;
 
+#define CLIENT_NET_READ_TIMEOUT		365*24*3600	/* Timeout on read */
+#define CLIENT_NET_WRITE_TIMEOUT	365*24*3600	/* Timeout on write */
+
 #ifdef __NETWARE__
 #pragma pack(push, 8)		/* 8 byte alignment */
 #endif

libmysql/libmysql.c

@@ -64,8 +64,8 @@ uint		mysql_port=0;
 my_string	mysql_unix_port=0;
 ulong 		net_buffer_length=8192;
 ulong		max_allowed_packet= 1024L*1024L*1024L;
-ulong		net_read_timeout=  NET_READ_TIMEOUT;
-ulong		net_write_timeout= NET_WRITE_TIMEOUT;
+ulong		net_read_timeout=  CLIENT_NET_READ_TIMEOUT;
+ulong		net_write_timeout= CLIENT_NET_WRITE_TIMEOUT;
 
 #define CLIENT_CAPABILITIES	(CLIENT_LONG_PASSWORD | CLIENT_LONG_FLAG | CLIENT_TRANSACTIONS)
 

mysql-test/r/create.result

@@ -200,3 +200,19 @@ select * from t1;
 0	1	2
 0	0	1
 drop table t1;
+create table t1 (a int not null, b int, primary key (a));
+insert into t1 values (1,1);
+create table if not exists t1 select 2;
+select * from t1;
+a	b
+1	1
+0	2
+create table if not exists t1 select 3 as 'a',4 as 'b';
+create table if not exists t1 select 3 as 'a',3 as 'b';
+Duplicate entry '3' for key 1
+select * from t1;
+a	b
+1	1
+0	2
+3	4
+drop table t1;

mysql-test/t/create.test

@@ -18,21 +18,30 @@ drop table if exists t1;
 # Test of some CREATE TABLE'S that should fail
 #
 
-!$1146 create table t2 type=heap select * from t1;
-!$1146 create table t2 select auto+1 from t1;
+--error 1146
+create table t2 type=heap select * from t1;
+--error 1146
+create table t2 select auto+1 from t1;
 drop table if exists t1,t2;
-!$1167 create table t1 (b char(0) not null, index(b));
-!$1164 create table t1 (a int not null auto_increment,primary key (a)) type=heap;
-!$1163 create table t1 (a int not null,b text) type=heap;
+--error 1167
+create table t1 (b char(0) not null, index(b));
+--error 1164
+create table t1 (a int not null auto_increment,primary key (a)) type=heap;
+--error 1163
+create table t1 (a int not null,b text) type=heap;
 drop table if exists t1;
 
-!$1164 create table t1 (ordid int(8) not null auto_increment, ord  varchar(50) not null, primary key (ord,ordid)) type=heap;
+--error 1164
+create table t1 (ordid int(8) not null auto_increment, ord  varchar(50) not null, primary key (ord,ordid)) type=heap;
 
 -- error 1044,1
 create table not_existing_database.test (a int);
-!$1103 create table `a/a` (a int);
-!$1103 create table `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa` (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa int);
-!$1059 create table a (`aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa` int);
+--error 1103
+create table `a/a` (a int);
+--error 1103
+create table `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa` (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa int);
+--error 1059
+create table a (`aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa` int);
 
 #
 # test of dummy table names
@@ -123,9 +132,12 @@ drop table t1;
 #
 create table t1 ( k1 varchar(2), k2 int, primary key(k1,k2));
 insert into t1 values ("a", 1), ("b", 2);
-!$1048 insert into t1 values ("c", NULL);
-!$1048 insert into t1 values (NULL, 3);
-!$1048 insert into t1 values (NULL, NULL);
+--error 1048
+insert into t1 values ("c", NULL);
+--error 1048
+insert into t1 values (NULL, 3);
+--error 1048
+insert into t1 values (NULL, NULL);
 drop table t1;
 
 #
@@ -154,3 +166,16 @@ create table if not exists t1 select 1;
 select * from t1;
 drop table t1;
 
+#
+# Test create table if not exists with duplicate key error
+#
+
+create table t1 (a int not null, b int, primary key (a));
+insert into t1 values (1,1);
+create table if not exists t1 select 2;
+select * from t1;
+create table if not exists t1 select 3 as 'a',4 as 'b';
+--error 1062
+create table if not exists t1 select 3 as 'a',3 as 'b';
+select * from t1;
+drop table t1;

mysys/my_chsize.c

@@ -51,16 +51,17 @@ int my_chsize(File fd, my_off_t newlength, int filler, myf MyFlags)
 #if defined(HAVE_SETFILEPOINTER)
   /* This is for the moment only true on windows */
   {
+    long is_success;
     HANDLE win_file= (HANDLE) _get_osfhandle(fd);
     long length_low, length_high;
     length_low= (long) (ulong) newlength;
     length_high= (long) ((ulonglong) newlength >> 32);
-    if (SetFilePointer(win_file, length_low, &length_high, FILE_BEGIN))
-    {
-      if (SetEndOfFile(win_file))
-	DBUG_RETURN(0);
-    }
-    my_errno= errno;
+    is_success= SetFilePointer(win_file, length_low, &length_high, FILE_BEGIN);
+    if (is_success == -1 && (my_errno= GetLastError()) != NO_ERROR)
+      goto err;
+    if (SetEndOfFile(win_file))
+      DBUG_RETURN(0);
+    my_errno= GetLastError();
     goto err;
   }
 #elif defined(HAVE_FTRUNCATE)

sql/handler.h

@@ -149,21 +149,21 @@ enum enum_tx_isolation { ISO_READ_UNCOMMITTED, ISO_READ_COMMITTED,
 
 typedef struct st_ha_create_information
 {
-  ulong table_options;
-  enum db_type db_type;
-  enum row_type row_type;
-  ulong avg_row_length;
-  ulonglong max_rows,min_rows;
-  ulonglong auto_increment_value;
   char *comment,*password;
   char *data_file_name, *index_file_name;
-  uint options;					/* OR of HA_CREATE_ options */
-  uint raid_type,raid_chunks;
+  ulonglong max_rows,min_rows;
+  ulonglong auto_increment_value;
+  ulong table_options;
+  ulong avg_row_length;
   ulong raid_chunksize;
-  bool if_not_exists;
   ulong used_fields;
   SQL_LIST merge_list;
+  enum db_type db_type;
+  enum row_type row_type;
+  uint options;				/* OR of HA_CREATE_ options */
+  uint raid_type,raid_chunks;
   uint merge_insert_method;
+  bool table_existed;			/* 1 in create if table existed */
 } HA_CREATE_INFO;
 
 

sql/slave.cc

@@ -2719,6 +2719,8 @@ the slave SQL thread with \"SLAVE START\". We stopped at log \
 		  RPL_LOG_NAME, llstr(rli->master_log_pos,llbuff));
 
  err:
+  /* Free temporary tables etc */
+  thd->cleanup();
   VOID(pthread_mutex_lock(&LOCK_thread_count));
   thd->query = thd->db = 0; // extra safety
   VOID(pthread_mutex_unlock(&LOCK_thread_count));

sql/sql_class.h

@@ -708,7 +708,6 @@ class select_create: public select_insert {
   HA_CREATE_INFO *create_info;
   MYSQL_LOCK *lock;
   Field **field;
-  my_bool do_not_drop;
 public:
   select_create (const char *db_name, const char *table_name,
 		 HA_CREATE_INFO *create_info_par,
@@ -717,7 +716,7 @@ class select_create: public select_insert {
 		 List<Item> &select_fields,enum_duplicates duplic)
     :select_insert (NULL, &select_fields, duplic), db(db_name),
     name(table_name), extra_fields(&fields_par),keys(&keys_par),
-    create_info(create_info_par), lock(0), do_not_drop(0)
+    create_info(create_info_par), lock(0)
     {}
   int prepare(List<Item> &list);
   bool send_data(List<Item> &values);
@@ -725,6 +724,7 @@ class select_create: public select_insert {
   void abort();
 };
 
+
 class select_union :public select_result {
  public:
   TABLE *table;

sql/sql_insert.cc

@@ -1440,7 +1440,6 @@ select_create::prepare(List<Item> &values)
 
   if (table->fields < values.elements)
   {
-    do_not_drop=1;
     my_printf_error(ER_WRONG_VALUE_COUNT_ON_ROW,
                     ER(ER_WRONG_VALUE_COUNT_ON_ROW),
 		    MYF(0),1);
@@ -1528,7 +1527,7 @@ void select_create::abort()
     enum db_type table_type=table->db_type;
     if (!table->tmp_table)
       hash_delete(&open_cache,(byte*) table);
-    if (!do_not_drop)
+    if (!create_info->table_existed)
       quick_rm_table(table_type,db,name);
     table=0;
   }

sql/sql_table.cc

@@ -728,7 +728,10 @@ int mysql_create_table(THD *thd,const char *db, const char *table_name,
       && find_temporary_table(thd,db,table_name))
   {
     if (create_info->options & HA_LEX_CREATE_IF_NOT_EXISTS)
+    {
+      create_info->table_existed= 1;		// Mark that table existed
       DBUG_RETURN(0);
+    }
     my_error(ER_TABLE_EXISTS_ERROR,MYF(0),table_name);
     DBUG_RETURN(-1);
   }
@@ -739,13 +742,17 @@ int mysql_create_table(THD *thd,const char *db, const char *table_name,
     {
       VOID(pthread_mutex_unlock(&LOCK_open));
       if (create_info->options & HA_LEX_CREATE_IF_NOT_EXISTS)
+      {
+	create_info->table_existed= 1;		// Mark that table existed
 	DBUG_RETURN(0);
+      }
       my_error(ER_TABLE_EXISTS_ERROR,MYF(0),table_name);
       DBUG_RETURN(-1);
     }
   }
 
   thd->proc_info="creating table";
+  create_info->table_existed= 0;		// Mark that table is created
 
   if (thd->sql_mode & MODE_NO_DIR_IN_CREATE)
     create_info->data_file_name= create_info->index_file_name= 0;