MDEV-30151 parse error 1=2 not between/in

the parser couldn't parse `1=2 not between 3 and 5`
after `2` it expected only NOT2_SYM, but not NOT_SYM
(visible from the sql_yacc.output file), which resulted in
Syntax error ... near 'not between 3 and 4'

The parser was confused by a rather low NOT_SYM precedence and
%prec BETWEEN_SYM didn't resolve this confusion.

As a fix, let's remove any %precedence from NOT_SYM and
specify %prec explicitly in the only place where it matters for NOT_SYM.

In other places, such as for NOT BETWEEN, NOT_SYM won't have a
precedence, so bison won't be confused about it.

mysql-test/main/parser.result

@@ -1866,4 +1866,15 @@ ERROR 42000: You have an error in your SQL syntax; check the manual that corresp
 EXECUTE IMMEDIATE 'CREATE PROCEDURE p() UPDATE t SET c=\'\'"abc';
 ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '"abc' at line 1
 SET @@sql_mode=@save_sql_mode;
+#
+# MDEV-30151 parse error 1=2 not between/in
+#
+select 1=2 not in (3,4);
+1=2 not in (3,4)
+1
+select 1=2 not between 3 and 4;
+1=2 not between 3 and 4
+1
+#
 # End of 10.3 tests
+#

mysql-test/main/parser.test

@@ -1673,4 +1673,12 @@ EXECUTE IMMEDIATE 'CREATE PROCEDURE p() UPDATE t SET c=\'\'"abc';
 
 SET @@sql_mode=@save_sql_mode;
 
+--echo #
+--echo # MDEV-30151 parse error 1=2 not between/in
+--echo #
+select 1=2 not in (3,4);
+select 1=2 not between 3 and 4;
+
+--echo #
 --echo # End of 10.3 tests
+--echo #

sql/sql_yacc.yy

@@ -899,7 +899,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b, size_t *yystacksize);
 /*
   We should not introduce any further shift/reduce conflicts.
 */
-%expect 85
+%expect 96
 
 /*
    Comments for TOKENS.
@@ -1687,7 +1687,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b, size_t *yystacksize);
 
 %left   PREC_BELOW_NOT
 
-%nonassoc NOT_SYM
+%nonassoc LOW_PRIORITY_NOT
 %left   '=' EQUAL_SYM GE '>' LE '<' NE
 %nonassoc IS
 %right BETWEEN_SYM
@@ -9840,7 +9840,7 @@ expr:
                 MYSQL_YYABORT;
             }
           }
-        | NOT_SYM expr %prec NOT_SYM
+        | NOT_SYM expr %prec LOW_PRIORITY_NOT
           {
             $$= negate_expression(thd, $2);
             if (unlikely($$ == NULL))

sql/sql_yacc_ora.yy

@@ -293,7 +293,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b, size_t *yystacksize);
 /*
   We should not introduce any further shift/reduce conflicts.
 */
-%expect 87
+%expect 98
 
 /*
    Comments for TOKENS.
@@ -1081,7 +1081,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b, size_t *yystacksize);
 
 %left   PREC_BELOW_NOT
 
-%nonassoc NOT_SYM
+%nonassoc LOW_PRIORITY_NOT
 %left   '=' EQUAL_SYM GE '>' LE '<' NE
 %nonassoc IS
 %right BETWEEN_SYM
@@ -9797,7 +9797,7 @@ expr:
                 MYSQL_YYABORT;
             }
           }
-        | NOT_SYM expr %prec NOT_SYM
+        | NOT_SYM expr %prec LOW_PRIORITY_NOT
           {
             $$= negate_expression(thd, $2);
             if (unlikely($$ == NULL))