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https://issues.apache.org/jira/browse/PHOENIX-3347?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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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 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}}
was:
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}}
> 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}}
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