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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"SQL contains ISNULL function in select clause parsing fails if used with NOT","articleBody":"The fix for ISNULL as a keyword or as a function doesn't work with NOT as a prefix:\r\n```java\r\n    @Test\r\n    public void testSqlContainIsNullFunctionShouldBeParsed3() throws JSQLParserException {\r\n        assertSqlCanBeParsedAndDeparsed(\"SELECT name, age FROM person WHERE NOT ISNULL(home, 'earn more money')\");\r\n    }\r\n```\r\n\r\nresults in:\r\n```net.sf.jsqlparser.parser.ParseException: Encountered unexpected token: \"(\" \"(\"\r\n    at line 1, column 46.\r\n\r\nWas expecting one of:\r\n\r\n    \"\u0026\u0026\"\r\n    \";\"\r\n    \"AND\"\r\n    \"CONNECT\"\r\n    \"EXCEPT\"\r\n    \"FOR\"\r\n    \"GROUP\"\r\n    \"HAVING\"\r\n    \"INTERSECT\"\r\n    \"MINUS\"\r\n    \"ORDER\"\r\n    \"START\"\r\n    \"UNION\"\r\n    \u003cEOF\u003e\r\n```\r\n\r\n_Originally posted by @damienb-opt in https://github.com/JSQLParser/JSqlParser/pull/610#issuecomment-453487603_","author":{"url":"https://github.com/damienb-opt","@type":"Person","name":"damienb-opt"},"datePublished":"2019-01-14T09:00:09.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/733/JSqlParser/issues/733"}