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

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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.
This commit is contained in:
Sergei Golubchik
2022-12-05 00:21:28 +01:00
parent f8adc47b69
commit eba099184e
4 changed files with 25 additions and 6 deletions
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8
mysql-test/main/parser.test
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@ -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 #