SHOW FIELDS changes, more SQL99 INFORMATION_SCHEMA.COLUMNS compatibility:

Character set is not displayed in "Type" column anymore
In "Collation" column NULL instead of BINARY is now displayd for for non-character data types

mysql-test/r/alter_table.result

@@ -51,8 +51,8 @@ KEY NAME (NAME));
 ALTER TABLE t1 CHANGE NAME NAME CHAR(80) not null;
 SHOW FULL COLUMNS FROM t1;
 Field	Type	Collation	Null	Key	Default	Extra	Privileges	Comment
-GROUP_ID	int(10) unsigned	binary		PRI	0		select,insert,update,references	
-LANG_ID	smallint(5) unsigned	binary		PRI	0		select,insert,update,references	
+GROUP_ID	int(10) unsigned	NULL		PRI	0		select,insert,update,references	
+LANG_ID	smallint(5) unsigned	NULL		PRI	0		select,insert,update,references	
 NAME	char(80)	latin1_swedish_ci		MUL			select,insert,update,references	
 DROP TABLE t1;
 create table t1 (n int);
@@ -157,7 +157,7 @@ alter table t1 rename t2;
 alter table t2 rename t1, add c char(10) comment "no comment";
 show columns from t1;
 Field	Type	Collation	Null	Key	Default	Extra
-i	int(10) unsigned	binary		PRI	NULL	auto_increment
+i	int(10) unsigned	NULL		PRI	NULL	auto_increment
 c	char(10)	latin1_swedish_ci	YES		NULL	
 drop table t1;
 create table t1 (a int, b int);

mysql-test/r/create.result

@@ -91,28 +91,28 @@ drop table t2;
 create table t2 select now() as a , curtime() as b, curdate() as c , 1+1 as d , 1.0 + 1 as e , 33333333333333333 + 3 as f;
 describe t2;
 Field	Type	Collation	Null	Key	Default	Extra
-a	datetime	latin1_swedish_ci			0000-00-00 00:00:00	
-b	time	latin1_swedish_ci			00:00:00	
-c	date	latin1_swedish_ci			0000-00-00	
-d	bigint(17)	binary			0	
-e	double(18,1)	binary			0.0	
-f	bigint(17)	binary			0	
+a	datetime	NULL			0000-00-00 00:00:00	
+b	time	NULL			00:00:00	
+c	date	NULL			0000-00-00	
+d	bigint(17)	NULL			0	
+e	double(18,1)	NULL			0.0	
+f	bigint(17)	NULL			0	
 drop table t2;
 create table t2 select CAST("2001-12-29" AS DATE) as d, CAST("20:45:11" AS TIME) as t, CAST("2001-12-29  20:45:11" AS DATETIME) as dt;
 describe t2;
 Field	Type	Collation	Null	Key	Default	Extra
-d	date	latin1_swedish_ci			0000-00-00	
-t	time	latin1_swedish_ci			00:00:00	
-dt	datetime	latin1_swedish_ci			0000-00-00 00:00:00	
+d	date	NULL			0000-00-00	
+t	time	NULL			00:00:00	
+dt	datetime	NULL			0000-00-00 00:00:00	
 drop table t1,t2;
 create table t1 (a tinyint);
 create table t2 (a int) select * from t1;
 describe t1;
 Field	Type	Collation	Null	Key	Default	Extra
-a	tinyint(4)	binary	YES		NULL	
+a	tinyint(4)	NULL	YES		NULL	
 describe t2;
 Field	Type	Collation	Null	Key	Default	Extra
-a	int(11)	binary	YES		NULL	
+a	int(11)	NULL	YES		NULL	
 drop table if exists t2;
 create table t2 (a int, a float) select * from t1;
 Duplicate column name 'a'

mysql-test/r/ctype_collate.result

@@ -500,7 +500,7 @@ t1	CREATE TABLE `t1` (
 ) TYPE=MyISAM CHARSET=latin1
 SHOW FIELDS FROM  t1;
 Field	Type	Collation	Null	Key	Default	Extra
-latin1_f	char(32) character set latin1	latin1_bin	YES		NULL	
+latin1_f	char(32)	latin1_bin	YES		NULL	
 ALTER TABLE t1 CHARACTER SET latin1 COLLATE latin1_bin;
 SHOW CREATE TABLE t1;
 Table	Create Table

mysql-test/r/ctype_recoding.result

@@ -14,7 +14,7 @@ Table	Create Table
 ) TYPE=MyISAM CHARSET=latin1
 SHOW FIELDS FROM ;
 Field	Type	Collation	Null	Key	Default	Extra
-	char(32) character set koi8r	koi8r_general_ci				
+	char(32)	koi8r_general_ci				
 SET CHARACTER SET cp1251;
 SHOW TABLES;
 Tables_in_test
@@ -26,7 +26,7 @@ Table	Create Table
 ) TYPE=MyISAM CHARSET=latin1
 SHOW FIELDS FROM ;
 Field	Type	Collation	Null	Key	Default	Extra
-	char(32) character set koi8r	koi8r_general_ci				
+	char(32)	koi8r_general_ci				
 SET CHARACTER SET utf8;
 SHOW TABLES;
 Tables_in_test
@@ -38,7 +38,7 @@ Table	Create Table
 ) TYPE=MyISAM CHARSET=latin1
 SHOW FIELDS FROM таблица;
 Field	Type	Collation	Null	Key	Default	Extra
-поле	char(32) character set koi8r	koi8r_general_ci				
+поле	char(32)	koi8r_general_ci				
 SET CHARACTER SET koi8r;
 DROP TABLE ;
 SET CHARACTER SET default;

mysql-test/r/gis.result

@@ -9,36 +9,36 @@ CREATE TABLE gc  (fid INTEGER NOT NULL PRIMARY KEY, g GEOMETRYCOLLECTION);
 CREATE TABLE geo (fid INTEGER NOT NULL PRIMARY KEY, g GEOMETRY);
 SHOW FIELDS FROM pt;
 Field	Type	Collation	Null	Key	Default	Extra
-fid	int(11)	binary		PRI	0	
-g	point	binary	YES		NULL	
+fid	int(11)	NULL		PRI	0	
+g	point	NULL	YES		NULL	
 SHOW FIELDS FROM ls;
 Field	Type	Collation	Null	Key	Default	Extra
-fid	int(11)	binary		PRI	0	
-g	linestring	binary	YES		NULL	
+fid	int(11)	NULL		PRI	0	
+g	linestring	NULL	YES		NULL	
 SHOW FIELDS FROM p;
 Field	Type	Collation	Null	Key	Default	Extra
-fid	int(11)	binary		PRI	0	
-g	polygon	binary	YES		NULL	
+fid	int(11)	NULL		PRI	0	
+g	polygon	NULL	YES		NULL	
 SHOW FIELDS FROM mpt;
 Field	Type	Collation	Null	Key	Default	Extra
-fid	int(11)	binary		PRI	0	
-g	multipoint	binary	YES		NULL	
+fid	int(11)	NULL		PRI	0	
+g	multipoint	NULL	YES		NULL	
 SHOW FIELDS FROM mls;
 Field	Type	Collation	Null	Key	Default	Extra
-fid	int(11)	binary		PRI	0	
-g	multilinestring	binary	YES		NULL	
+fid	int(11)	NULL		PRI	0	
+g	multilinestring	NULL	YES		NULL	
 SHOW FIELDS FROM mp;
 Field	Type	Collation	Null	Key	Default	Extra
-fid	int(11)	binary		PRI	0	
-g	multipolygon	binary	YES		NULL	
+fid	int(11)	NULL		PRI	0	
+g	multipolygon	NULL	YES		NULL	
 SHOW FIELDS FROM gc;
 Field	Type	Collation	Null	Key	Default	Extra
-fid	int(11)	binary		PRI	0	
-g	geometrycollection	binary	YES		NULL	
+fid	int(11)	NULL		PRI	0	
+g	geometrycollection	NULL	YES		NULL	
 SHOW FIELDS FROM geo;
 Field	Type	Collation	Null	Key	Default	Extra
-fid	int(11)	binary		PRI	0	
-g	geometry	binary	YES		NULL	
+fid	int(11)	NULL		PRI	0	
+g	geometry	NULL	YES		NULL	
 INSERT INTO pt VALUES 
 (101, PointFromText('POINT(10 10)')),
 (102, PointFromText('POINT(20 10)')),
@@ -367,26 +367,26 @@ gm  geometry
 );
 SHOW FIELDS FROM g1;
 Field	Type	Collation	Null	Key	Default	Extra
-pt	point	binary	YES		NULL	
-ln	linestring	binary	YES		NULL	
-pg	polygon	binary	YES		NULL	
-mpt	multipoint	binary	YES		NULL	
-mln	multilinestring	binary	YES		NULL	
-mpg	multipolygon	binary	YES		NULL	
-gc	geometrycollection	binary	YES		NULL	
-gm	geometry	binary	YES		NULL	
+pt	point	NULL	YES		NULL	
+ln	linestring	NULL	YES		NULL	
+pg	polygon	NULL	YES		NULL	
+mpt	multipoint	NULL	YES		NULL	
+mln	multilinestring	NULL	YES		NULL	
+mpg	multipolygon	NULL	YES		NULL	
+gc	geometrycollection	NULL	YES		NULL	
+gm	geometry	NULL	YES		NULL	
 ALTER TABLE g1 ADD fid INT NOT NULL;
 SHOW FIELDS FROM g1;
 Field	Type	Collation	Null	Key	Default	Extra
-pt	point	binary	YES		NULL	
-ln	linestring	binary	YES		NULL	
-pg	polygon	binary	YES		NULL	
-mpt	multipoint	binary	YES		NULL	
-mln	multilinestring	binary	YES		NULL	
-mpg	multipolygon	binary	YES		NULL	
-gc	geometrycollection	binary	YES		NULL	
-gm	geometry	binary	YES		NULL	
-fid	int(11)	binary			0	
+pt	point	NULL	YES		NULL	
+ln	linestring	NULL	YES		NULL	
+pg	polygon	NULL	YES		NULL	
+mpt	multipoint	NULL	YES		NULL	
+mln	multilinestring	NULL	YES		NULL	
+mpg	multipolygon	NULL	YES		NULL	
+gc	geometrycollection	NULL	YES		NULL	
+gm	geometry	NULL	YES		NULL	
+fid	int(11)	NULL			0	
 DROP TABLE g1;
 SELECT AsText(GeometryFromWKB(AsWKB(GeometryFromText('POINT(1 4)'))));
 AsText(GeometryFromWKB(AsWKB(GeometryFromText('POINT(1 4)'))))

mysql-test/r/innodb.result

@@ -907,7 +907,7 @@ drop table t1;
 create table t1 (t int not null default 1, key (t)) type=innodb;
 desc t1;
 Field	Type	Collation	Null	Key	Default	Extra
-t	int(11)	binary		MUL	1	
+t	int(11)	NULL		MUL	1	
 drop table t1;
 CREATE TABLE t1 (
 number bigint(20) NOT NULL default '0',

mysql-test/r/select.result

@@ -3218,16 +3218,16 @@ show tables from test like "t?";
 Tables_in_test (t?)
 show full columns from t2;
 Field	Type	Collation	Null	Key	Default	Extra	Privileges	Comment
-auto	int(11)	binary		PRI	NULL	auto_increment	select,insert,update,references	
-fld1	int(6) unsigned zerofill	binary		UNI	000000		select,insert,update,references	
-companynr	tinyint(2) unsigned zerofill	binary			00		select,insert,update,references	
+auto	int(11)	NULL		PRI	NULL	auto_increment	select,insert,update,references	
+fld1	int(6) unsigned zerofill	NULL		UNI	000000		select,insert,update,references	
+companynr	tinyint(2) unsigned zerofill	NULL			00		select,insert,update,references	
 fld3	char(30)	latin1_swedish_ci		MUL			select,insert,update,references	
 fld4	char(35)	latin1_swedish_ci					select,insert,update,references	
 fld5	char(35)	latin1_swedish_ci					select,insert,update,references	
 fld6	char(4)	latin1_swedish_ci					select,insert,update,references	
 show full columns from t2 from test like 'f%';
 Field	Type	Collation	Null	Key	Default	Extra	Privileges	Comment
-fld1	int(6) unsigned zerofill	binary		UNI	000000		select,insert,update,references	
+fld1	int(6) unsigned zerofill	NULL		UNI	000000		select,insert,update,references	
 fld3	char(30)	latin1_swedish_ci		MUL			select,insert,update,references	
 fld4	char(35)	latin1_swedish_ci					select,insert,update,references	
 fld5	char(35)	latin1_swedish_ci					select,insert,update,references	

mysql-test/r/show_check.result

@@ -101,7 +101,7 @@ show full columns from t1;
 Field	Type	Collation	Null	Key	Default	Extra	Privileges	Comment
 test_set	set('val1','val2','val3')	latin1_swedish_ci					select,insert,update,references	
 name	char(20)	latin1_swedish_ci	YES		O'Brien		select,insert,update,references	O'Brien as default
-c	int(11)	binary			0		select,insert,update,references	int column
+c	int(11)	NULL			0		select,insert,update,references	int column
 drop table t1;
 create table t1 (a int not null, unique aa (a));
 show create table t1;
@@ -156,20 +156,20 @@ drop table t1;
 create table t1 (a decimal(9,2), b decimal (9,0), e double(9,2), f double(5,0), h float(3,2), i float(3,0));
 show columns from t1;
 Field	Type	Collation	Null	Key	Default	Extra
-a	decimal(9,2)	binary	YES		NULL	
-b	decimal(9,0)	binary	YES		NULL	
-e	double(9,2)	binary	YES		NULL	
-f	double(5,0)	binary	YES		NULL	
-h	float(3,2)	binary	YES		NULL	
-i	float(3,0)	binary	YES		NULL	
+a	decimal(9,2)	NULL	YES		NULL	
+b	decimal(9,0)	NULL	YES		NULL	
+e	double(9,2)	NULL	YES		NULL	
+f	double(5,0)	NULL	YES		NULL	
+h	float(3,2)	NULL	YES		NULL	
+i	float(3,0)	NULL	YES		NULL	
 show full columns from t1;
 Field	Type	Collation	Null	Key	Default	Extra	Privileges	Comment
-a	decimal(9,2)	binary	YES		NULL		select,insert,update,references	
-b	decimal(9,0)	binary	YES		NULL		select,insert,update,references	
-e	double(9,2)	binary	YES		NULL		select,insert,update,references	
-f	double(5,0)	binary	YES		NULL		select,insert,update,references	
-h	float(3,2)	binary	YES		NULL		select,insert,update,references	
-i	float(3,0)	binary	YES		NULL		select,insert,update,references	
+a	decimal(9,2)	NULL	YES		NULL		select,insert,update,references	
+b	decimal(9,0)	NULL	YES		NULL		select,insert,update,references	
+e	double(9,2)	NULL	YES		NULL		select,insert,update,references	
+f	double(5,0)	NULL	YES		NULL		select,insert,update,references	
+h	float(3,2)	NULL	YES		NULL		select,insert,update,references	
+i	float(3,0)	NULL	YES		NULL		select,insert,update,references	
 drop table t1;
 create table t1 (
 type_bool bool not null,
@@ -230,15 +230,15 @@ drop table t1;
 create table t1 (c decimal, d double, f float, r real);
 show columns from t1;
 Field	Type	Collation	Null	Key	Default	Extra
-c	decimal(10,0)	binary	YES		NULL	
-d	double	binary	YES		NULL	
-f	float	binary	YES		NULL	
-r	double	binary	YES		NULL	
+c	decimal(10,0)	NULL	YES		NULL	
+d	double	NULL	YES		NULL	
+f	float	NULL	YES		NULL	
+r	double	NULL	YES		NULL	
 drop table t1;
 create table t1 (c decimal(3,3), d double(3,3), f float(3,3));
 show columns from t1;
 Field	Type	Collation	Null	Key	Default	Extra
-c	decimal(4,3)	binary	YES		NULL	
-d	double(4,3)	binary	YES		NULL	
-f	float(4,3)	binary	YES		NULL	
+c	decimal(4,3)	NULL	YES		NULL	
+d	double(4,3)	NULL	YES		NULL	
+f	float(4,3)	NULL	YES		NULL	
 drop table t1;

mysql-test/r/type_blob.result

@@ -2,9 +2,9 @@ drop table if exists t1,t2,t3,t4,t5,t6,t7;
 CREATE TABLE t1 (a blob, b text, c blob(250), d text(70000), e text(70000000));
 show columns from t1;
 Field	Type	Collation	Null	Key	Default	Extra
-a	blob	binary	YES		NULL	
+a	blob	NULL	YES		NULL	
 b	text	latin1_swedish_ci	YES		NULL	
-c	blob	binary	YES		NULL	
+c	blob	NULL	YES		NULL	
 d	mediumtext	latin1_swedish_ci	YES		NULL	
 e	longtext	latin1_swedish_ci	YES		NULL	
 CREATE TABLE t2 (a char(257), b varchar(70000) binary, c varchar(70000000));
@@ -15,7 +15,7 @@ Warning	1244	Converting column 'c' from CHAR to TEXT
 show columns from t2;
 Field	Type	Collation	Null	Key	Default	Extra
 a	text	latin1_swedish_ci	YES		NULL	
-b	mediumblob	binary	YES		NULL	
+b	mediumblob	NULL	YES		NULL	
 c	longtext	latin1_swedish_ci	YES		NULL	
 create table t3 (a long, b long byte);
 show create TABLE t3;
@@ -72,15 +72,15 @@ show full fields from t1;
 Field	Type	Collation	Null	Key	Default	Extra	Privileges	Comment
 t	text	latin1_swedish_ci	YES		NULL		select,insert,update,references	
 c	varchar(10)	latin1_swedish_ci	YES		NULL		select,insert,update,references	
-b	blob	binary	YES		NULL		select,insert,update,references	
-d	varchar(10) binary	binary	YES		NULL		select,insert,update,references	
+b	blob	NULL	YES		NULL		select,insert,update,references	
+d	varchar(10)	binary	YES		NULL		select,insert,update,references	
 lock tables t1 WRITE;
 show full fields from t1;
 Field	Type	Collation	Null	Key	Default	Extra	Privileges	Comment
 t	text	latin1_swedish_ci	YES		NULL		select,insert,update,references	
 c	varchar(10)	latin1_swedish_ci	YES		NULL		select,insert,update,references	
-b	blob	binary	YES		NULL		select,insert,update,references	
-d	varchar(10) binary	binary	YES		NULL		select,insert,update,references	
+b	blob	NULL	YES		NULL		select,insert,update,references	
+d	varchar(10)	binary	YES		NULL		select,insert,update,references	
 unlock tables;
 select t from t1 where t like "hello";
 t

mysql-test/r/type_float.result

@@ -11,8 +11,8 @@ SELECT 1e1,1.e1,1.0e1,1e+1,1.e+1,1.0e+1,1e-1,1.e-1,1.0e-1;
 create table t1 (f1 float(24),f2 float(52));
 show full columns from t1;
 Field	Type	Collation	Null	Key	Default	Extra	Privileges	Comment
-f1	float	binary	YES		NULL		select,insert,update,references	
-f2	double	binary	YES		NULL		select,insert,update,references	
+f1	float	NULL	YES		NULL		select,insert,update,references	
+f2	double	NULL	YES		NULL		select,insert,update,references	
 insert into t1 values(10,10),(1e+5,1e+5),(1234567890,1234567890),(1e+10,1e+10),(1e+15,1e+15),(1e+20,1e+20),(1e+50,1e+50),(1e+150,1e+150);
 Warnings:
 Warning	1262	Data truncated, out of range for column 'f1' at row 7
@@ -73,18 +73,18 @@ drop table t1;
 create table t1 (f float, f2 float(24), f3 float(6,2), d double, d2 float(53), d3 double(10,3), de decimal, de2 decimal(6), de3 decimal(5,2), n numeric, n2 numeric(8), n3 numeric(5,6));
 show full columns from t1;
 Field	Type	Collation	Null	Key	Default	Extra	Privileges	Comment
-f	float	binary	YES		NULL		select,insert,update,references	
-f2	float	binary	YES		NULL		select,insert,update,references	
-f3	float(6,2)	binary	YES		NULL		select,insert,update,references	
-d	double	binary	YES		NULL		select,insert,update,references	
-d2	double	binary	YES		NULL		select,insert,update,references	
-d3	double(10,3)	binary	YES		NULL		select,insert,update,references	
-de	decimal(10,0)	binary	YES		NULL		select,insert,update,references	
-de2	decimal(6,0)	binary	YES		NULL		select,insert,update,references	
-de3	decimal(5,2)	binary	YES		NULL		select,insert,update,references	
-n	decimal(10,0)	binary	YES		NULL		select,insert,update,references	
-n2	decimal(8,0)	binary	YES		NULL		select,insert,update,references	
-n3	decimal(7,6)	binary	YES		NULL		select,insert,update,references	
+f	float	NULL	YES		NULL		select,insert,update,references	
+f2	float	NULL	YES		NULL		select,insert,update,references	
+f3	float(6,2)	NULL	YES		NULL		select,insert,update,references	
+d	double	NULL	YES		NULL		select,insert,update,references	
+d2	double	NULL	YES		NULL		select,insert,update,references	
+d3	double(10,3)	NULL	YES		NULL		select,insert,update,references	
+de	decimal(10,0)	NULL	YES		NULL		select,insert,update,references	
+de2	decimal(6,0)	NULL	YES		NULL		select,insert,update,references	
+de3	decimal(5,2)	NULL	YES		NULL		select,insert,update,references	
+n	decimal(10,0)	NULL	YES		NULL		select,insert,update,references	
+n2	decimal(8,0)	NULL	YES		NULL		select,insert,update,references	
+n3	decimal(7,6)	NULL	YES		NULL		select,insert,update,references	
 drop table t1;
 create table t1 (a  decimal(7,3) not null, key (a));
 insert into t1 values ("0"),("-0.00"),("-0.01"),("-0.002"),("1");

sql/field.cc

@@ -254,26 +254,6 @@ void Field_str::make_field(Send_field *field)
 }
 
 
-void Field_str::add_binary_or_charset(String &res) const
-{
-  if (charset() == &my_charset_bin)
-    res.append(" binary");
-  else  if (field_charset != table->table_charset &&
-	    !(current_thd->variables.sql_mode & MODE_NO_FIELD_OPTIONS) &&
-	    !(current_thd->variables.sql_mode & MODE_MYSQL323) &&
-	    !(current_thd->variables.sql_mode & MODE_MYSQL40) &&
-	    !(current_thd->variables.sql_mode & MODE_POSTGRESQL) &&
-	    !(current_thd->variables.sql_mode & MODE_ORACLE) &&
-	    !(current_thd->variables.sql_mode & MODE_MSSQL) &&
-	    !(current_thd->variables.sql_mode & MODE_DB2) &&
-	    !(current_thd->variables.sql_mode & MODE_SAPDB))
-  {
-    res.append(" character set ");
-    res.append(field_charset->csname);
-  }
-}
-
-
 uint Field::fill_cache_field(CACHE_FIELD *copy)
 {
   copy->str=ptr;
@@ -4027,7 +4007,6 @@ void Field_string::sql_type(String &res) const
 			     "varchar" : "char"),
 			    (int) field_length);
   res.length(length);
-  add_binary_or_charset(res);
 }
 
 
@@ -4194,7 +4173,6 @@ void Field_varstring::sql_type(String &res) const
 			     res.alloced_length(),"varchar(%u)",
 			     field_length);
   res.length(length);
-  add_binary_or_charset(res);
 }
 
 char *Field_varstring::pack(char *to, const char *from, uint max_length)
@@ -4640,11 +4618,6 @@ void Field_blob::sql_type(String &res) const
   else
   {
     res.append("text");
-    if (field_charset != table->table_charset)
-    {
-      res.append(" character set ");
-      res.append(field_charset->csname);
-    }
   }
 }
 
@@ -5098,7 +5071,6 @@ void Field_enum::sql_type(String &res) const
     flag=1;
   }
   res.append(')');
-  add_binary_or_charset(res);
 }
 
 
@@ -5243,7 +5215,6 @@ void Field_set::sql_type(String &res) const
     flag=1;
   }
   res.append(')');
-  add_binary_or_charset(res);
 }
 
 /* returns 1 if the fields are equally defined */

sql/field.h

@@ -211,6 +211,7 @@ public:
   virtual bool get_date(TIME *ltime,bool fuzzydate);
   virtual bool get_time(TIME *ltime);
   virtual CHARSET_INFO *charset(void) const { return &my_charset_bin; }
+  virtual bool has_charset(void) const { return FALSE; }
   virtual void set_charset(CHARSET_INFO *charset) { }
   virtual void set_warning(const unsigned int level, 
                            const unsigned int code);
@@ -277,12 +278,10 @@ public:
         flags|=BINARY_FLAG;
     }
   Item_result result_type () const { return STRING_RESULT; }
-  void add_binary_or_charset(String &res) const;
   uint decimals() const { return NOT_FIXED_DEC; }
   void make_field(Send_field *);
   uint size_of() const { return sizeof(*this); }
   CHARSET_INFO *charset(void) const { return field_charset; }
-
   void set_charset(CHARSET_INFO *charset) { field_charset=charset; }
   bool binary() const { return field_charset->state & MY_CS_BINSORT ? 1 : 0; }
   friend class create_field;
@@ -807,6 +806,7 @@ public:
   uint max_packed_col_length(uint max_length);
   uint size_of() const { return sizeof(*this); }
   enum_field_types real_type() const { return FIELD_TYPE_STRING; }
+  bool has_charset(void) const { return TRUE; }
 };
 
 
@@ -849,6 +849,7 @@ public:
   uint max_packed_col_length(uint max_length);
   uint size_of() const { return sizeof(*this); }
   enum_field_types real_type() const { return FIELD_TYPE_VAR_STRING; }
+  bool has_charset(void) const { return TRUE; }
 };
 
 
@@ -936,6 +937,8 @@ public:
   inline void clear_temporary() { bzero((char*) &value,sizeof(value)); }
   friend void field_conv(Field *to,Field *from);
   uint size_of() const { return sizeof(*this); }
+  bool has_charset(void) const 
+  { return charset() == &my_charset_bin ? FALSE : TRUE; }
 };
 
 
@@ -1004,6 +1007,7 @@ public:
   virtual bool zero_pack() const { return 0; }
   bool optimize_range(uint idx) { return 0; }
   bool eq_def(Field *field);
+  bool has_charset(void) const { return TRUE; }
 };
 
 
@@ -1028,6 +1032,7 @@ public:
   String *val_str(String*,String *);
   void sql_type(String &str) const;
   enum_field_types real_type() const { return FIELD_TYPE_SET; }
+  bool has_charset(void) const { return TRUE; }
 };
 
 

sql/sql_show.cc

@@ -719,8 +719,8 @@ mysqld_show_fields(THD *thd, TABLE_LIST *table_list,const char *wild,
         protocol->store(field->field_name, system_charset_info);
         field->sql_type(type);
         protocol->store(type.ptr(), type.length(), system_charset_info);
-	protocol->store(field->charset()->name, system_charset_info);
-
+	protocol->store(field->has_charset() ? field->charset()->name : "NULL",
+			system_charset_info);
         pos=(byte*) ((flags & NOT_NULL_FLAG) &&
                      field->type() != FIELD_TYPE_TIMESTAMP ?
                      "" : "YES");
@@ -1073,23 +1073,36 @@ store_create_info(THD *thd, TABLE *table, String *packet)
     field->sql_type(type);
     packet->append(type.ptr(),type.length());
 
-    bool has_default = (field->type() != FIELD_TYPE_BLOB &&
-			field->type() != FIELD_TYPE_TIMESTAMP &&
-			field->unireg_check != Field::NEXT_NUMBER);
-    
-    /* 
-      For string types dump collation name only if 
-      collation is not primary for the given charset
-    */
-    if (!(field->charset()->state & MY_CS_PRIMARY) &&
-	!limited_mysql_mode && !foreign_db_mode)
+    if (field->has_charset())
     {
-      packet->append(" collate ", 9);
-      packet->append(field->charset()->name);
+      if (field->charset() == &my_charset_bin)
+        packet->append(" binary");
+      else if (!limited_mysql_mode && !foreign_db_mode)
+      {
+	if (field->charset() != table->table_charset)
+	{
+	  packet->append(" character set ");
+	  packet->append(field->charset()->csname);
+	}
+	/* 
+	  For string types dump collation name only if 
+	  collation is not primary for the given charset
+	*/
+	if (!(field->charset()->state & MY_CS_PRIMARY))
+	{
+	  packet->append(" collate ", 9);
+	  packet->append(field->charset()->name);
+	}
+      }
     }
+
     if (flags & NOT_NULL_FLAG)
       packet->append(" NOT NULL", 9);
 
+    bool has_default = (field->type() != FIELD_TYPE_BLOB &&
+			field->type() != FIELD_TYPE_TIMESTAMP &&
+			field->unireg_check != Field::NEXT_NUMBER);
+
     if (has_default)
     {
       packet->append(" default ", 9);