XuQianJin-Stars commented on issue #1168: [CALCITE-3005] Implement string functions: LEFT, RIGHT URL: https://github.com/apache/calcite/pull/1168#issuecomment-495138738 hi @julianhyde @chunweilei @pengzhiwei2018 Thank you very much.I now found an error when adding JDBC String function `{fn LEFT(string, integer)` and `{fn RIGHT(string, integer)}` create in `SqlJdbcFunctionCall` and test in `SqlOperatorBaseTest.testJdbcFn()`.It looks like there's a conflict between String's `LEFT` semantics and `LEFT JOIN` semantics.I am not sure how to solve this problem. Could you give me some advice? best qianjin
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