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Eric Lomore commented on PHOENIX-3347: -------------------------------------- {code}public boolean isFromRequired() Whether FROM clause is required in a SELECT statement. True in ORACLE_10, STRICT_92, STRICT_99, STRICT_2003; false otherwise.{code} Switching to any of these 3 should work as there are no other changes except this. DEFAULT PRAGMATIC_99 PRAGMATIC_2003 http://calcite.apache.org/apidocs/org/apache/calcite/sql/validate/SqlConformance.html [~maryannxue] with your blessing, can I proceed with a quick patch to change to DEFAULT or one of the others if that's preferred? Thanks! > Change conformance or remove SELECT statements without FROM clauses > ------------------------------------------------------------------- > > Key: PHOENIX-3347 > URL: https://issues.apache.org/jira/browse/PHOENIX-3347 > Project: Phoenix > Issue Type: Sub-task > Reporter: Eric Lomore > Assignee: Eric Lomore > > Current conformance settings do not allow SELECT statements without a FROM > clause. Either need to change conformance or stop supporting SELECT without > FROM as Phoenix currently does. > According to the Calcite parser, > {{FROM is mandatory in standard SQL, optional in dialects such as MySQL, > PostgreSQL. The parser allows SELECT without FROM, but the validator fails if > conformance is, say, STRICT_2003.}} > Based on PhoenixCalciteEmbeddedDriver.java, we are using ORACLE_10 > conformance which does not support this > {code}setPropertyIfNotSpecified( > info2, > CalciteConnectionProperty.CONFORMANCE.camelName(), > SqlConformance.ORACLE_10.toString()){code} > Confirming this is the fact that it is specifically the SqlValidator throwing > the exception in relevant test cases > {{Caused by: org.apache.calcite.sql.validate.SqlValidatorException: SELECT > must have a FROM clause}} -- This message was sent by Atlassian JIRA (v6.3.4#6332)