[ https://issues.apache.org/jira/browse/PHOENIX-3347?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Eric Lomore updated PHOENIX-3347: --------------------------------- Description: 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 I assume does not support this, {code}setPropertyIfNotSpecified( info2, CalciteConnectionProperty.CONFORMANCE.camelName(), SqlConformance.ORACLE_10.toString()){code} Confirming this is the fact that the SqlValidator throws the exception in relevant test cases {{Caused by: org.apache.calcite.sql.validate.SqlValidatorException: SELECT must have a FROM clause}} was: Current conformance settings do not allow SELECT statements without a FROM clause 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 I assume does not support this, {code}setPropertyIfNotSpecified( info2, CalciteConnectionProperty.CONFORMANCE.camelName(), SqlConformance.ORACLE_10.toString()){code} Note that the actual failure occurs when the SqlValidator rejects the statement {{Caused by: org.apache.calcite.sql.validate.SqlValidatorException: SELECT must have a FROM clause}} Either need to change conformance or stop supporting SELECT without FROM as Phoenix currently does. > 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 I assume does not support this, > {code}setPropertyIfNotSpecified( > info2, > CalciteConnectionProperty.CONFORMANCE.camelName(), > SqlConformance.ORACLE_10.toString()){code} > Confirming this is the fact that the SqlValidator throws 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)