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https://issues.apache.org/jira/browse/FLINK-14858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16977474#comment-16977474
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Dawid Wysakowicz commented on FLINK-14858:
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I assigned you [~toutian] to the ticket.
> Wrong "if" statement in SqlToOperationConverter
> -----------------------------------------------
>
> Key: FLINK-14858
> URL: https://issues.apache.org/jira/browse/FLINK-14858
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 1.9.1
> Reporter: zhaozhangwan
> Assignee: zhaozhangwan
> Priority: Trivial
> Fix For: 1.10.0
>
>
> In class {{org.apache.flink.table.sqlexec.SqlToOperationConverter}}
> {code:java}
> public static Operation convert(FlinkPlannerImpl flinkPlanner, SqlNode
> sqlNode) {
> // validate the query
> final SqlNode validated = flinkPlanner.validate(sqlNode);
> SqlToOperationConverter converter = new
> SqlToOperationConverter(flinkPlanner);
> if (validated instanceof SqlCreateTable) {
> return converter.convertCreateTable((SqlCreateTable) validated);
> } if (validated instanceof SqlDropTable) { // this
> should be "else if" not the "if"
> return converter.convertDropTable((SqlDropTable) validated);
> } else if (validated instanceof RichSqlInsert) {
> return converter.convertSqlInsert((RichSqlInsert) validated);
> } else if (validated.getKind().belongsTo(SqlKind.QUERY)) {
> return converter.convertSqlQuery(validated);
> } else {
> throw new TableException("Unsupported node type "
> + validated.getClass().getSimpleName());
> }
> }{code}
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