[MDEV-17677] Keywords are parsed as identifiers when followed by a dot Created: 2018-11-12  Updated: 2018-12-27

Status: Open
Project: MariaDB Server
Component/s: Parser
Affects Version/s: 5.5, 10.0, 10.1, 10.2, 10.3, 10.4
Fix Version/s: 10.4

Type: Bug Priority: Major
Reporter: Alexander Barkov Assignee: Alexander Barkov
Resolution: Unresolved Votes: 0
Labels: None

Issue Links:
Blocks
blocks MDEV-17674 GRANT ON PROCEDURE can be erroneously... Open

 Description   

Keywords immediately followed by a dot character are parsed as identifiers. So, e.g., this generates a syntax error:

MariaDB [test]> SELECT.1;
 
ERROR 1064 (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 'SELECT.1' at line 1

This does not conform to the SQL standard. It should be normally parsed as equivalent to:

SELECT .1;

Note, other databases do understand this syntax:

Oracle Database 11g Express Edition Release 11.2.0.2.0 - 64bit Production
 
 
 
SQL> SELECT.1 FROM DUAL;
 
 
 
	.1
 
----------
 
	.1
 
SQL> 


psql (9.4.9)
 
Type "help" for help.
 
 
 
bar=> SELECT.1;
 
 ?column? 
----------
 
      0.1
 
(1 row)


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