It does not currently. See https://issues.apache.org/jira/browse/CALCITE-5248.
> On May 22, 2023, at 4:12 AM, Zineeddine ZIDANE <iz_zid...@esi.dz> wrote: > > Does calcite support referencing column aliases in WHERE clause? I know SQL > doesn't allow this but it is supported out of the box in databases such as > redshift, bigquery etc.. > > The following query (for the sake of the example) fails with the error > message below: > > Query: > > > > SELECT (CASE WHEN deptno = 20 THEN deptno ELSE NULL END) AS deptno_20 > FROM emp WHERE deptno_20 = 20; > > > > Error: > > > > org.apache.calcite.sql.validate.SqlValidatorException: Column 'W_20' > not found in any table > at > java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native > Method) > at > java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) > at > java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) > at > java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) > at > org.apache.calcite.runtime.Resources$ExInstWithCause.ex(Resources.java:505) > at org.apache.calcite.runtime.Resources$ExInst.ex(Resources.java:599) > at org.apache.calcite.sql.SqlUtil.newContextException(SqlUtil.java:945) > at org.apache.calcite.sql.SqlUtil.newContextException(SqlUtil.java:930) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.newValidationError(SqlValidatorImpl.java:5408) > at > org.apache.calcite.sql.validate.DelegatingScope.fullyQualify(DelegatingScope.java:286) > at > org.apache.calcite.sql.validate.SqlValidatorImpl$Expander.visit(SqlValidatorImpl.java:6573) > at > org.apache.calcite.sql.validate.SqlValidatorImpl$Expander.visit(SqlValidatorImpl.java:6553) > at org.apache.calcite.sql.SqlIdentifier.accept(SqlIdentifier.java:324) > at > org.apache.calcite.sql.util.SqlShuttle$CallCopyingArgHandler.visitChild(SqlShuttle.java:134) > at > org.apache.calcite.sql.util.SqlShuttle$CallCopyingArgHandler.visitChild(SqlShuttle.java:101) > at org.apache.calcite.sql.SqlOperator.acceptCall(SqlOperator.java:954) > at > org.apache.calcite.sql.validate.SqlValidatorImpl$Expander.visitScoped(SqlValidatorImpl.java:6593) > at > org.apache.calcite.sql.validate.SqlScopedShuttle.visit(SqlScopedShuttle.java:54) > at > org.apache.calcite.sql.validate.SqlScopedShuttle.visit(SqlScopedShuttle.java:37) > at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:161) > at > org.apache.calcite.sql.validate.SqlValidatorImpl$Expander.go(SqlValidatorImpl.java:6562) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.expand(SqlValidatorImpl.java:6144) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateWhereClause(SqlValidatorImpl.java:4450) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:3737) > at > org.apache.calcite.sql.validate.SelectNamespace.validateImpl(SelectNamespace.java:61) > at > org.apache.calcite.sql.validate.AbstractNamespace.validate(AbstractNamespace.java:88) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateNamespace(SqlValidatorImpl.java:1114) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:1085) > at org.apache.calcite.sql.SqlSelect.validate(SqlSelect.java:248) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validateScopedExpression(SqlValidatorImpl.java:1060) > at > org.apache.calcite.sql.validate.SqlValidatorImpl.validate(SqlValidatorImpl.java:766) > > > Thank you for any leads on this,
