[jira] [Assigned] (FLINK-11399) Parsing nested ROW()s in SQL

["TANG Wen-hui (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-11399?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

TANG Wen-hui reassigned FLINK-11399:
------------------------------------

    Assignee: TANG Wen-hui

> Parsing nested ROW()s in SQL
> ----------------------------
>
>                 Key: FLINK-11399
>                 URL: https://issues.apache.org/jira/browse/FLINK-11399
>             Project: Flink
>          Issue Type: Bug
>          Components: Table API & SQL
>    Affects Versions: 1.7.1
>            Reporter: Benoît Paris
>            Assignee: TANG Wen-hui
>            Priority: Minor
>
> Hi!
> I'm trying to build a nested structure in SQL (mapping to json with flink-json). This works fine: 
> {code:java}
> INSERT INTO outputTable
> SELECT ROW(col1, col2) 
> FROM (
>   SELECT 
>     col1, 
>     ROW(col1, col1) as col2 
>   FROM inputTable
> ) tbl2
> {code}
> (and I use it as a workaround), but it fails in the simpler version: 
> {code:java}
> INSERT INTO outputTable
> SELECT ROW(col1, ROW(col1, col1)) 
> FROM inputTable
> {code}
> , yielding the following stacktrace: 
> {noformat}
> Exception in thread "main" org.apache.flink.table.api.SqlParserException: SQL parse failed. Encountered ", ROW" at line 1, column 40.
> Was expecting one of:
> ")" ...
> "," <IDENTIFIER> ...
> "," <QUOTED_IDENTIFIER> ...
> "," <BACK_QUOTED_IDENTIFIER> ...
> "," <BRACKET_QUOTED_IDENTIFIER> ...
> "," <UNICODE_QUOTED_IDENTIFIER> ...
> at org.apache.flink.table.calcite.FlinkPlannerImpl.parse(FlinkPlannerImpl.scala:94)
> at org.apache.flink.table.api.TableEnvironment.sqlUpdate(TableEnvironment.scala:803)
> at org.apache.flink.table.api.TableEnvironment.sqlUpdate(TableEnvironment.scala:777)
> at TestBug.main(TestBug.java:32)
> Caused by: org.apache.calcite.sql.parser.SqlParseException: Encountered ", ROW" at line 1, column 40.
> Was expecting one of:
> ")" ...
> "," <IDENTIFIER> ...
> "," <QUOTED_IDENTIFIER> ...
> "," <BACK_QUOTED_IDENTIFIER> ...
> "," <BRACKET_QUOTED_IDENTIFIER> ...
> "," <UNICODE_QUOTED_IDENTIFIER> ...
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.convertException(SqlParserImpl.java:347)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.normalizeException(SqlParserImpl.java:128)
> at org.apache.calcite.sql.parser.SqlParser.parseQuery(SqlParser.java:137)
> at org.apache.calcite.sql.parser.SqlParser.parseStmt(SqlParser.java:162)
> at org.apache.flink.table.calcite.FlinkPlannerImpl.parse(FlinkPlannerImpl.scala:90)
> ... 3 more
> Caused by: org.apache.calcite.sql.parser.impl.ParseException: Encountered ", ROW" at line 1, column 40.
> Was expecting one of:
> ")" ...
> "," <IDENTIFIER> ...
> "," <QUOTED_IDENTIFIER> ...
> "," <BACK_QUOTED_IDENTIFIER> ...
> "," <BRACKET_QUOTED_IDENTIFIER> ...
> "," <UNICODE_QUOTED_IDENTIFIER> ...
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.generateParseException(SqlParserImpl.java:23019)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.jj_consume_token(SqlParserImpl.java:22836)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.ParenthesizedSimpleIdentifierList(SqlParserImpl.java:4466)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.Expression3(SqlParserImpl.java:3328)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.Expression2b(SqlParserImpl.java:3066)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.Expression2(SqlParserImpl.java:3092)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.Expression(SqlParserImpl.java:3045)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.SelectExpression(SqlParserImpl.java:1525)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.SelectItem(SqlParserImpl.java:1500)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.SelectList(SqlParserImpl.java:1477)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.SqlSelect(SqlParserImpl.java:912)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.LeafQuery(SqlParserImpl.java:552)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.LeafQueryOrExpr(SqlParserImpl.java:3030)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.QueryOrExpr(SqlParserImpl.java:2949)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.OrderedQueryOrExpr(SqlParserImpl.java:463)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.SqlInsert(SqlParserImpl.java:1212)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.SqlStmt(SqlParserImpl.java:847)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.SqlStmtEof(SqlParserImpl.java:869)
> at org.apache.calcite.sql.parser.impl.SqlParserImpl.parseSqlStmtEof(SqlParserImpl.java:184)
> at org.apache.calcite.sql.parser.SqlParser.parseQuery(SqlParser.java:130)
> ... 5 more{noformat}
>  
> I was thinking it could be a naming/referencing issue; or I was not using ROW() properly, in the json-idiomatic way I want to push on it.
> Anyway this is very minor, thanks for all the good work on Flink!
> Cheers,
> Ben 



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