Hello, I've added some missing MySQL, PostgreSQL and Oracle (et al) keywords to the SQL keyword list:

tablespace package profile cluster materialized index indextype regexp_like returning synonym explain flashback purge noaudit rename truncate diskgroup merge minus exists regexp varchar2 nvarchar2 tinyint fixed long middleint bigint mediumint mediumtext mediumblob bool type dimension bfile

Here's a patch: http://felipe.ath.cx/diff/geany/sql-keywords.diff