Sergey Nuyanzin created CALCITE-7312:
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Summary: Alias is not auto generated for LATERAL TABLE
Key: CALCITE-7312
URL: https://issues.apache.org/jira/browse/CALCITE-7312
Project: Calcite
Issue Type: Bug
Reporter: Sergey Nuyanzin
Assignee: Sergey Nuyanzin
CALCITE-7217 fixed losing {{LATERAL}} while validation, however it seems it
missed the case if alias is not specified, for instance
{code:sql}
select * from emp, lateral table(ramp(emp.deptno)), dept
{code}
then validation will rewrite query to
{code:sql}
SELECT SELECT `EMP`.`EMPNO`, `EMP`.`ENAME`, `EMP`.`JOB`, `EMP`.`MGR`,
`EMP`.`HIREDATE`, `EMP`.`SAL`, `EMP`.`COMM`, `EMP`.`DEPTNO`, `EMP`.`SLACKER`,
`EXPR$0`.`I`, `DEPT`.`DEPTNO` AS `DEPTNO0`, `DEPT`.`NAME`
FROM `CATALOG`.`SALES`.`EMP` AS `EMP`,
LATERAL TABLE(RAMP(`EMP`.`DEPTNO`))
`CATALOG`.`SALES`.`DEPT` AS `DEPT`
{code}
thus it uses generated alias in projection however it doesn't add it to
{{LATERAL TABLE}} in {{FROM}}
so it should be
{code:sql}
SELECT `EMP`.`EMPNO`, `EMP`.`ENAME`, `EMP`.`JOB`, `EMP`.`MGR`,
`EMP`.`HIREDATE`, `EMP`.`SAL`, `EMP`.`COMM`, `EMP`.`DEPTNO`, `EMP`.`SLACKER`,
`EXPR$0`.`I`, `DEPT`.`DEPTNO` AS `DEPTNO0`, `DEPT`.`NAME`
FROM `CATALOG`.`SALES`.`EMP` AS `EMP`,
LATERAL TABLE(RAMP(`EMP`.`DEPTNO`)) AS `EXPR$0`,
`CATALOG`.`SALES`.`DEPT` AS `DEPT`
{code}
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