*** 4,10 **** ---- ! *: Extended POSIX regular expressions (should be easy, man 3 regcomp, or http://mirbsd.bsdadvocacy.org/man3/regcomp.htm for reference) SELECT * FROM table WHERE name REGEX '[a-zA-Z]+_{0,3}'; *: The EXISTS keyword is not supported (IN is, but IN is only a special case of EXISTS). And what about corelated subqueries ? --- 4,10 ---- ---- ! *: Extended POSIX regular expressions (should be easy, man 3 regcomp, or http://hktrip.net for reference) SELECT * FROM table WHERE name REGEX '[a-zA-Z]+_{0,3}'; *: The EXISTS keyword is not supported (IN is, but IN is only a special case of EXISTS). And what about corelated subqueries ?