Added new ANSI functions LOCALTIME, LOCALTIMESTAMP and CURRENT_USER

Added CEIL as an alias for CEILING
Cleaned up CHECK constraint handling.
(We don't anymore require braces after CHECK)
Added casting to CHAR.


mysql-test/r/bigint.result:
  Moved casting test to cast.test
mysql-test/r/func_time.result:
  Test of new functions
mysql-test/t/bigint.test:
  Moved casting test to cast.test
mysql-test/t/func_time.test:
  Test of new functions
sql/item_create.cc:
  Added casting to CHAR
sql/item_func.h:
  Added casting to CHAR
sql/item_timefunc.h:
  Added casting to CHAR
sql/lex.h:
  Added new ANSI functions LOCALTIME, LOCALTIMESTAMP and CURRENT_USER
  Added CEIL as an alias for CEILING
sql/sql_yacc.yy:
  Cleaned up CHECK constraint handling.

mysql-test/r/bigint.result

@@ -52,24 +52,3 @@ select min(big),max(big),max(big)-1 from t1 group by a;
 min(big)	max(big)	max(big)-1
 -1	9223372036854775807	9223372036854775806
 drop table t1;
-select CAST(1-2 AS UNSIGNED);
-CAST(1-2 AS UNSIGNED)
-18446744073709551615
-select CAST(CAST(1-2 AS UNSIGNED) AS SIGNED INTEGER);
-CAST(CAST(1-2 AS UNSIGNED) AS SIGNED INTEGER)
--1
-select CONVERT('-1',UNSIGNED);
-CONVERT('-1',UNSIGNED)
-18446744073709551615
-select cast(-5 as unsigned) | 1, cast(-5 as unsigned) & -1;
-cast(-5 as unsigned) | 1	cast(-5 as unsigned) & -1
-18446744073709551611	18446744073709551611
-select cast(-5 as unsigned) -1, cast(-5 as unsigned) + 1;
-cast(-5 as unsigned) -1	cast(-5 as unsigned) + 1
-18446744073709551610	18446744073709551612
-select ~5, cast(~5 as signed);
-~5	cast(~5 as signed)
-18446744073709551610	-6
-select cast(5 as unsigned) -6.0;
-cast(5 as unsigned) -6.0
--1.0

mysql-test/r/cast.result

+select CAST(1-2 AS UNSIGNED);
+CAST(1-2 AS UNSIGNED)
+18446744073709551615
+select CAST(CAST(1-2 AS UNSIGNED) AS SIGNED INTEGER);
+CAST(CAST(1-2 AS UNSIGNED) AS SIGNED INTEGER)
+-1
+select CONVERT('-1',UNSIGNED);
+CONVERT('-1',UNSIGNED)
+18446744073709551615
+select cast(-5 as unsigned) | 1, cast(-5 as unsigned) & -1;
+cast(-5 as unsigned) | 1	cast(-5 as unsigned) & -1
+18446744073709551611	18446744073709551611
+select cast(-5 as unsigned) -1, cast(-5 as unsigned) + 1;
+cast(-5 as unsigned) -1	cast(-5 as unsigned) + 1
+18446744073709551610	18446744073709551612
+select ~5, cast(~5 as signed);
+~5	cast(~5 as signed)
+18446744073709551610	-6
+select cast(5 as unsigned) -6.0;
+cast(5 as unsigned) -6.0
+-1.0
+select cast("A" as binary) = "a", cast(BINARY "a" as CHAR) = "A";
+cast("A" as binary) = "a"	cast(BINARY "a" as CHAR) = "A"
+0	1
+select cast("2001-1-1" as DATE), cast("2001-1-1" as DATETIME);
+cast("2001-1-1" as DATE)	cast("2001-1-1" as DATETIME)
+2001-1-1	2001-1-1
+select cast("1:2:3" as TIME);
+cast("1:2:3" as TIME)
+1:2:3
+select cast("2001-1-1" as date) = "2001-01-01";
+cast("2001-1-1" as date) = "2001-01-01"
+0
+select cast("2001-1-1" as datetime) = "2001-01-01 00:00:00";
+cast("2001-1-1" as datetime) = "2001-01-01 00:00:00"
+0
+select cast("1:2:3" as TIME) = "1:02:03";
+cast("1:2:3" as TIME) = "1:02:03"
+0

mysql-test/r/constraints.result

+drop table if exists t1;
+create table t1 (a int check (a>0));
+insert into t1 values (1);
+insert into t1 values (0);
+drop table t1;
+create table t1 (a int ,b int, check a>b);
+insert into t1 values (1,0);
+insert into t1 values (0,1);
+drop table t1;
+create table t1 (a int ,b int, constraint abc check (a>b));
+insert into t1 values (1,0);
+insert into t1 values (0,1);
+drop table t1;
+create table t1 (a int null);
+insert into t1 values (1),(NULL);
+drop table t1;

mysql-test/r/func_time.result

@@ -24,6 +24,12 @@ now()-curdate()*1000000-curtime()
 select strcmp(current_timestamp(),concat(current_date()," ",current_time()));
 strcmp(current_timestamp(),concat(current_date()," ",current_time()))
 0
+select strcmp(localtime(),concat(current_date()," ",current_time()));
+strcmp(localtime(),concat(current_date()," ",current_time()))
+0
+select strcmp(localtimestamp(),concat(current_date()," ",current_time()));
+strcmp(localtimestamp(),concat(current_date()," ",current_time()))
+0
 select date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w");
 date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w")
 January Thursday 2nd 1997 97 01 02 03 04 05 4

mysql-test/t/bigint.test

@@ -35,11 +35,3 @@ alter table t1 modify big bigint not null;
 select min(big),max(big),max(big)-1 from t1;
 select min(big),max(big),max(big)-1 from t1 group by a;
 drop table t1;
-
-select CAST(1-2 AS UNSIGNED);
-select CAST(CAST(1-2 AS UNSIGNED) AS SIGNED INTEGER);
-select CONVERT('-1',UNSIGNED);
-select cast(-5 as unsigned) | 1, cast(-5 as unsigned) & -1;
-select cast(-5 as unsigned) -1, cast(-5 as unsigned) + 1;
-select ~5, cast(~5 as signed);
-select cast(5 as unsigned) -6.0;

mysql-test/t/cast.test

+#
+# Test of cast function
+#
+
+select CAST(1-2 AS UNSIGNED);
+select CAST(CAST(1-2 AS UNSIGNED) AS SIGNED INTEGER);
+select CONVERT('-1',UNSIGNED);
+select cast(-5 as unsigned) | 1, cast(-5 as unsigned) & -1;
+select cast(-5 as unsigned) -1, cast(-5 as unsigned) + 1;
+select ~5, cast(~5 as signed);
+select cast(5 as unsigned) -6.0;
+select cast("A" as binary) = "a", cast(BINARY "a" as CHAR) = "A";
+select cast("2001-1-1" as DATE), cast("2001-1-1" as DATETIME);
+select cast("1:2:3" as TIME);
+
+#
+# The following should be fixed in 4.1
+#
+
+select cast("2001-1-1" as date) = "2001-01-01";
+select cast("2001-1-1" as datetime) = "2001-01-01 00:00:00";
+select cast("1:2:3" as TIME) = "1:02:03";

mysql-test/t/constraints.test

+#
+# Testing of constraints
+# Currently MySQL only ignores the syntax.
+#
+drop table if exists t1;
+
+create table t1 (a int check (a>0));
+insert into t1 values (1);
+insert into t1 values (0);
+drop table t1;
+create table t1 (a int ,b int, check a>b);
+insert into t1 values (1,0);
+insert into t1 values (0,1);
+drop table t1;
+create table t1 (a int ,b int, constraint abc check (a>b));
+insert into t1 values (1,0);
+insert into t1 values (0,1);
+drop table t1;
+create table t1 (a int null);
+insert into t1 values (1),(NULL);
+drop table t1;

mysql-test/t/func_time.test

@@ -12,6 +12,8 @@ select sec_to_time(9001),sec_to_time(9001)+0,time_to_sec("15:12:22"),
 select sec_to_time(time_to_sec('-838:59:59'));
 select now()-curdate()*1000000-curtime();
 select strcmp(current_timestamp(),concat(current_date()," ",current_time()));
+select strcmp(localtime(),concat(current_date()," ",current_time()));
+select strcmp(localtimestamp(),concat(current_date()," ",current_time()));
 select date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w");
 select date_format("1997-01-02", concat("%M %W %D ","%Y %y %m %d %h %i %s %w"));
 select dayofmonth("1997-01-02"),dayofmonth(19970323);

sql/item_create.cc

@@ -425,6 +425,7 @@ Item *create_func_cast(Item *a, Item_cast cast_type)
   LINT_INIT(res);
   switch (cast_type) {
   case ITEM_CAST_BINARY: 	res= new Item_func_binary(a); break;
+  case ITEM_CAST_CHAR:	 	res= new Item_char_typecast(a); break;
   case ITEM_CAST_SIGNED_INT:	res= new Item_func_signed(a); break;
   case ITEM_CAST_UNSIGNED_INT:  res= new Item_func_unsigned(a); break;
   case ITEM_CAST_DATE:		res= new Item_date_typecast(a); break;

sql/item_func.h

@@ -1003,7 +1003,7 @@ class Item_func_match_bool :public Item_func_match
 enum Item_cast
 {
   ITEM_CAST_BINARY, ITEM_CAST_SIGNED_INT, ITEM_CAST_UNSIGNED_INT,
-  ITEM_CAST_DATE, ITEM_CAST_TIME, ITEM_CAST_DATETIME
+  ITEM_CAST_DATE, ITEM_CAST_TIME, ITEM_CAST_DATETIME, ITEM_CAST_CHAR
 };
 
 Item *create_func_cast(Item *a, Item_cast cast_type);

sql/item_timefunc.h

@@ -410,6 +410,7 @@ class Item_date_add_interval :public Item_date_func
   unsigned int size_of() { return sizeof(*this);}  
 };
 
+
 class Item_extract :public Item_int_func
 {
   const interval_type int_type;
@@ -424,10 +425,12 @@ class Item_extract :public Item_int_func
   unsigned int size_of() { return sizeof(*this);}  
 };
 
+
 class Item_typecast :public Item_str_func
 {
 public:
   Item_typecast(Item *a) :Item_str_func(a) {}
+  const char *func_name() const { return "char"; }
   String *val_str(String *a)
   { a=args[0]->val_str(a); null_value=args[0]->null_value; return a; }
   void fix_length_and_dec() { max_length=args[0]->max_length; }
@@ -435,6 +438,14 @@ class Item_typecast :public Item_str_func
 };
 
 
+class Item_char_typecast :public Item_typecast
+{
+public:
+  Item_char_typecast(Item *a) :Item_typecast(a) {}
+  void fix_length_and_dec() { binary=0; max_length=args[0]->max_length; }
+};
+
+
 class Item_date_typecast :public Item_typecast
 {
 public:
@@ -450,6 +461,7 @@ class Item_date_typecast :public Item_typecast
   }  
 };
 
+
 class Item_time_typecast :public Item_typecast
 {
 public:
@@ -465,6 +477,7 @@ class Item_time_typecast :public Item_typecast
   }
 };
 
+
 class Item_datetime_typecast :public Item_typecast
 {
 public:

sql/lex.h

@@ -210,6 +210,8 @@ static SYMBOL symbols[] = {
   { "LIMIT",		SYM(LIMIT),0,0},
   { "LOAD",		SYM(LOAD),0,0},
   { "LOCAL",		SYM(LOCAL_SYM),0,0},
+  { "LOCALTIME",	SYM(NOW_SYM),0,0},
+  { "LOCALTIMESTAMP",	SYM(NOW_SYM),0,0},
   { "LOCK",		SYM(LOCK_SYM),0,0},
   { "LOCKS",		SYM(LOCKS_SYM),0,0},
   { "LOGS",		SYM(LOGS_SYM),0,0},
@@ -394,7 +396,9 @@ static SYMBOL sql_functions[] = {
   { "BIT_OR",		SYM(BIT_OR),0,0},
   { "BIT_AND",		SYM(BIT_AND),0,0},
   { "CAST",		SYM(CAST_SYM),0,0},
+  { "CEIL",		SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_ceiling)},
   { "CEILING",		SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_ceiling)},
+  { "CURRENT_USER",	SYM(USER),0,0},
   { "BIT_LENGTH",	SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_bit_length)},
   { "CHAR_LENGTH",	SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_char_length)},
   { "CHARACTER_LENGTH", SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_char_length)},

sql/sql_yacc.yy

@@ -899,7 +899,7 @@ field_list:
 
 
 field_list_item:
-	  field_spec
+	  field_spec check_constraint
 	| field_spec references
 	  {
 	    Lex->col_list.empty();		/* Alloced by sql_alloc */
@@ -914,10 +914,16 @@ field_list_item:
 	  {
 	    Lex->col_list.empty();		/* Alloced by sql_alloc */
 	  }
-	| opt_constraint CHECK_SYM '(' expr ')'
+	| opt_constraint check_constraint
 	  {
 	    Lex->col_list.empty();		/* Alloced by sql_alloc */
-	  };
+	  }
+	;
+
+check_constraint:
+	/* empty */
+	| CHECK_SYM expr
+	;
 
 opt_constraint:
 	/* empty */
@@ -1986,13 +1992,15 @@ in_sum_expr:
 
 cast_type:
 	BINARY 			{ $$=ITEM_CAST_BINARY; }
+	| CHAR_SYM		{ $$=ITEM_CAST_CHAR; }
 	| SIGNED_SYM		{ $$=ITEM_CAST_SIGNED_INT; }
 	| SIGNED_SYM INT_SYM	{ $$=ITEM_CAST_SIGNED_INT; }
 	| UNSIGNED		{ $$=ITEM_CAST_UNSIGNED_INT; }
 	| UNSIGNED INT_SYM	{ $$=ITEM_CAST_UNSIGNED_INT; }
 	| DATE_SYM		{ $$=ITEM_CAST_DATE; }
 	| TIME_SYM		{ $$=ITEM_CAST_TIME; }
-	| DATETIME		{ $$=ITEM_CAST_DATETIME; };
+	| DATETIME		{ $$=ITEM_CAST_DATETIME; }
+	;
 
 expr_list:
 	{ Select->expr_list.push_front(new List<Item>); }
@@ -2437,7 +2445,7 @@ table_name:
 	{ if (!add_table_to_list($1,NULL,1)) YYABORT; };
 
 if_exists:
-	/* empty */ { $$=0; }
+	/* empty */ { $$= 0; }
 	| IF EXISTS { $$= 1; }
 	;
 
@@ -3154,7 +3162,6 @@ keyword:
 	| CACHE_SYM		{}
 	| CHANGED		{}
 	| CHECKSUM_SYM		{}
-	| CHECK_SYM		{}
 	| CIPHER_SYM		{}
 	| CLIENT_SYM		{}
 	| CLOSE_SYM		{}