[jira] [Resolved] (CALCITE-2511) Possible bug in parsing implementation of rown_num select

["Vladimir Sitnikov (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-2511?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vladimir Sitnikov resolved CALCITE-2511.
----------------------------------------
       Resolution: Duplicate
    Fix Version/s: 1.18.0

> Possible bug in parsing implementation of rown_num select
> ---------------------------------------------------------
>
>                 Key: CALCITE-2511
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2511
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.17.0
>            Reporter: Piotr Bojko
>            Assignee: Julian Hyde
>            Priority: Major
>             Fix For: 1.18.0
>
>         Attachments: implementation.java
>
>
> I've found a possible bug.
> With following view:
> {code:json}
> {
> 	"name": "STEPS",
> 	"type": "view",
> 	"sql": [
> 		"WITH ALLROWS AS ( ",
> 		" SELECT ",
> 		"   ROW_NUMBER() OVER W AS IDX, I.ID ISSUE, COALESCE(CG.AUTHOR, I.REPORTER) AS AUTHOR, COALESCE(CI.OLDVALUE, I.STATUS) AS STATUS, I.CREATED AS STARTDATE, CG.CREATED AS ENDDATE ",
> 		" FROM ISSUES AS I ",
> 		" JOIN INTERNAL.CHANGEGROUP AS CG ON CG.ISSUEID = I.ID ",
> 		" JOIN INTERNAL.CHANGEITEM AS CI ON CI.GROUPID = CG.ID ",
> 		" WHERE CI.FIELDTYPE = 'jira' AND CI.FIELD = 'status' ",
> 		" WINDOW w AS (PARTITION BY i.id ORDER BY CG.CREATED) ",
> 		") ",
> 		"SELECT ISSUE, AUTHOR, STATUS, STARTDATE, ENDDATE ",
> 		"FROM ALLROWS WHERE ALLROWS.IDX <= 1 ",
> 		"UNION ALL ",
> 		"SELECT I.ID AS ISSUE, CG.AUTHOR, CI.NEWVALUE AS STATUS, CG.CREATED AS STARTDATE, LEAD(CG.CREATED, 1) OVER W AS ENDDATE ",
> 		"FROM ISSUES i ",
> 		"JOIN INTERNAL.CHANGEGROUP AS CG ON CG.ISSUEID = I.ID ",
> 		"JOIN INTERNAL.CHANGEITEM AS CI ON CI.GROUPID = CG.ID ",
> 		"WHERE CI.FIELDTYPE = 'jira' AND CI.FIELD = 'status' ",
> 		"WINDOW W AS (PARTITION BY I.ID ORDER BY CG.CREATED) "
> 	]
> },
> {code}
> When performig
> {code:sql}
> SELECT * FROM STEPS
> {code}
> The result is
> {noformat}
> Line 1556, Column 0: Java$AmbiguousName is not allowed as an expression statement. Expressions statements must be one of assignments, method invocations, or object allocations..
> {noformat}
> As an attachment, I've attached implementation. Clearly the line 1555/1556 is wrong...
> I've discovered then, when removing *WHERE ALLROWS.IDX <= 1* - all is ok.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)