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Xurenhe edited comment on CALCITE-5029 at 3/11/22, 3:17 AM: ------------------------------------------------------------ Define a custom identifier token in the basic {*}Parser.jj{*}, and expand it in the babel's {*}config.fmpp{*}{*}{*} Hi all PR is ready, please review it. Thanks PR: [https://github.com/apache/calcite/pull/2737/files] was (Author: wojustme): Hi all PR is ready, please review it. Thanks PR: https://github.com/apache/calcite/pull/2737/files > Babel parser support identifier starting with number > ---------------------------------------------------- > > Key: CALCITE-5029 > URL: https://issues.apache.org/jira/browse/CALCITE-5029 > Project: Calcite > Issue Type: Improvement > Components: babel > Reporter: Xurenhe > Assignee: Xurenhe > Priority: Major > Labels: pull-request-available > Time Spent: 20m > Remaining Estimate: 0h > > MySQL support identifier starting with number, which is without any quoting. > * test case > {code:java} > @Test void testIdentifierStartWithNumber() { > final String sql = > "select 1_c1 from (select deptno as 1_c1 from emp)"; > sql(sql).ok(); > } {code} > * Exception > {code:java} > java.lang.RuntimeException: > org.apache.calcite.sql.parser.SqlParseException: Encountered "1" at line 1, > column 36. > Was expecting one of: > <QUOTED_STRING> ... > <BRACKET_QUOTED_IDENTIFIER> ... > <QUOTED_IDENTIFIER> ... > <BACK_QUOTED_IDENTIFIER> ... > <BIG_QUERY_BACK_QUOTED_IDENTIFIER> ... > <HYPHENATED_IDENTIFIER> ... > <IDENTIFIER> ... > <UNICODE_QUOTED_IDENTIFIER> ... > at > org.apache.calcite.sql.parser.SqlParseException.writeReplace(SqlParseException.java:171) > {code} > ---- > As discuss of email's group: > [https://lists.apache.org/thread/yj905ht2t2gwnndgyw5ks8nh0nftlyoo] > We could support it in babel's parser. -- This message was sent by Atlassian Jira (v8.20.1#820001)