bug #715: SELECT YEAR+0 FROM foobar is parsed as 'SELECT' 'YEAR' '+0' => syntax error

mysql-test/r/bigint.result

 drop table if exists t1;
 select 0,256,00000000000000065536,2147483647,-2147483648,2147483648,+4294967296;
-0	256	00000000000000065536	2147483647	-2147483648	2147483648	+4294967296
+0	256	00000000000000065536	2147483647	-2147483648	2147483648	4294967296
 0	256	65536	2147483647	-2147483648	2147483648	4294967296
 select 9223372036854775807,-009223372036854775808;
 9223372036854775807	-009223372036854775808
 9223372036854775807	-9223372036854775808
 select +9999999999999999999,-9999999999999999999;
-+9999999999999999999	-9999999999999999999
+9999999999999999999	-9999999999999999999
 9999999999999999999	-10000000000000000000
 select cast(9223372036854775808 as unsigned)+1;
 cast(9223372036854775808 as unsigned)+1
@@ -14,6 +14,9 @@ cast(9223372036854775808 as unsigned)+1
 select 9223372036854775808+1;
 9223372036854775808+1
 9223372036854775809
+select -(0-3),round(-(0-3)), round(9999999999999999999);
+-(0-3)	round(-(0-3))	round(9999999999999999999)
+3	3	10000000000000000000
 create table t1 (a bigint unsigned not null, primary key(a));
 insert into t1 values (18446744073709551615), (0xFFFFFFFFFFFFFFFE);
 select * from t1;

mysql-test/r/type_decimal.result

@@ -436,8 +436,8 @@ a
 99999999999
 drop table t1;
 CREATE TABLE t1 (a_dec DECIMAL(-1,0));
-ERROR 42000: Too big column length for column 'a_dec' (max = 255). Use BLOB instead
+ERROR 42000: You have an error in your SQL syntax.  Check the manual that corresponds to your MySQL server version for the right syntax to use near '-1,0))' at line 1
 CREATE TABLE t1 (a_dec DECIMAL(-2,1));
-ERROR 42000: Too big column length for column 'a_dec' (max = 255). Use BLOB instead
+ERROR 42000: You have an error in your SQL syntax.  Check the manual that corresponds to your MySQL server version for the right syntax to use near '-2,1))' at line 1
 CREATE TABLE t1 (a_dec DECIMAL(-1,1));
-ERROR 42000: Too big column length for column 'a_dec' (max = 255). Use BLOB instead
+ERROR 42000: You have an error in your SQL syntax.  Check the manual that corresponds to your MySQL server version for the right syntax to use near '-1,1))' at line 1

mysql-test/t/bigint.test

@@ -13,6 +13,8 @@ select 9223372036854775807,-009223372036854775808;
 select +9999999999999999999,-9999999999999999999;
 select cast(9223372036854775808 as unsigned)+1;
 select 9223372036854775808+1;
+select -(0-3),round(-(0-3)), round(9999999999999999999);
+
 #
 # In 3.23 we have to disable the test of column to bigint as
 # this fails on AIX powerpc (the resolution for double is not good enough)

mysql-test/t/type_decimal.test

@@ -237,9 +237,9 @@ drop table t1;
 # Test of wrong decimal type
 #
 
---error 1074
+--error 1064
 CREATE TABLE t1 (a_dec DECIMAL(-1,0));
---error 1074
+--error 1064
 CREATE TABLE t1 (a_dec DECIMAL(-2,1));
---error 1074
+--error 1064
 CREATE TABLE t1 (a_dec DECIMAL(-1,1));

mysys/charset.c

@@ -82,7 +82,6 @@ static void init_state_maps(CHARSET_INFO *cs)
   }
   state_map[(uchar)'_']=state_map[(uchar)'$']=(uchar) MY_LEX_IDENT;
   state_map[(uchar)'\'']=(uchar) MY_LEX_STRING;
-  state_map[(uchar)'-']=state_map[(uchar)'+']=(uchar) MY_LEX_SIGNED_NUMBER;
   state_map[(uchar)'.']=(uchar) MY_LEX_REAL_OR_POINT;
   state_map[(uchar)'>']=state_map[(uchar)'=']=state_map[(uchar)'!']= (uchar) MY_LEX_CMP_OP;
   state_map[(uchar)'<']= (uchar) MY_LEX_LONG_CMP_OP;

sql/item.h

@@ -374,7 +374,7 @@ public:
   Item_uint(const char *str_arg, uint length) :
     Item_int(str_arg, (longlong) strtoull(str_arg,(char**) 0,10), length) {}
   Item_uint(uint32 i) :Item_int((longlong) i, 10) {}
-  double val() { return ulonglong2double(value); }
+  double val() { return ulonglong2double((ulonglong)value); }
   String *val_str(String*);
   Item *new_item() { return new Item_uint(name,max_length); }
   bool fix_fields(THD *thd, struct st_table_list *list, Item **item)

sql/item_func.cc

@@ -597,7 +597,8 @@ void Item_func_neg::fix_length_and_dec()
 {
   decimals=args[0]->decimals;
   max_length=args[0]->max_length;
-  hybrid_type= args[0]->result_type() == INT_RESULT ? INT_RESULT : REAL_RESULT;
+  hybrid_type= args[0]->result_type() == INT_RESULT && !args[0]->unsigned_flag ?
+    INT_RESULT : REAL_RESULT;
 }
 
 double Item_func_abs::val()

sql/sql_lex.cc

@@ -455,6 +455,13 @@ int yylex(void *arg, void *yythd)
       }
     case MY_LEX_CHAR:			// Unknown or single char token
     case MY_LEX_SKIP:			// This should not happen
+      if (c == '-' && yyPeek() == '-' &&
+          (my_isspace(cs,yyPeek2()) || 
+           my_iscntrl(cs,yyPeek2())))
+      {
+        state=MY_LEX_COMMENT;
+        break;
+      }
       yylval->lex_str.str=(char*) (lex->ptr=lex->tok_start);// Set to first chr
       yylval->lex_str.length=1;
       c=yyGet();
@@ -694,37 +701,6 @@ int yylex(void *arg, void *yythd)
       lex->next_state= MY_LEX_START;
       return(IDENT);
     }
-    case MY_LEX_SIGNED_NUMBER:		// Incomplete signed number
-      if (prev_state == MY_LEX_OPERATOR_OR_IDENT)
-      {
-	if (c == '-' && yyPeek() == '-' &&
-	    (my_isspace(cs,yyPeek2()) || 
-             my_iscntrl(cs,yyPeek2())))
-	  state=MY_LEX_COMMENT;
-	else
-	  state= MY_LEX_CHAR;		// Must be operator
-	break;
-      }
-      if (!my_isdigit(cs,c=yyGet()) || yyPeek() == 'x')
-      {
-	if (c != '.')
-	{
-	  if (c == '-' && my_isspace(cs,yyPeek()))
-	    state= MY_LEX_COMMENT;
-	  else
-	    state= MY_LEX_CHAR;		// Return sign as single char
-	  break;
-	}
-	yyUnget();			// Fix for next loop
-      }
-      while (my_isdigit(cs,c=yyGet())) ;	// Incomplete real or int number
-      if ((c == 'e' || c == 'E') &&
-	  (yyPeek() == '+' || yyPeek() == '-' || my_isdigit(cs,yyPeek())))
-      {					// Real number
-	yyUnget();
-	c= '.';				// Fool next test
-      }
-      // fall through
     case MY_LEX_INT_OR_REAL:		// Compleat int or incompleat real
       if (c != '.')
       {					// Found complete integer number.

sql/sql_yacc.yy

@@ -2294,6 +2294,7 @@ simple_expr:
 	      YYABORT;
 	  }
 	| sum_expr
+	| '+' expr %prec NEG	{ $$= $2; }
 	| '-' expr %prec NEG    { $$= new Item_func_neg($2); }
 	| '~' expr %prec NEG	{ $$= new Item_func_bit_neg($2); }
 	| NOT expr %prec NEG	{ $$= new Item_func_not($2); }
@@ -4310,8 +4311,6 @@ ident:
 	  LEX *lex= Lex;
 	  $$.str= lex->thd->strmake($1.str,$1.length);
 	  $$.length=$1.length;
-	  if (lex->next_state != MY_LEX_END)
-	    lex->next_state= MY_LEX_OPERATOR_OR_IDENT;
 	}
 	;