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https://issues.apache.org/jira/browse/KYLIN-5215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17574455#comment-17574455
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gaogao commented on KYLIN-5215:
---
example: select count(*) as "COUNT__stime" from tabletest
在指标查询的时候加上 as 和双引号就会这样。
cube query result:
{isNullable: 0, displaySize: 19, label: "COUNT__stime", name: "COUNT__stime",
schemaName: null,…}
pushdown query result:
{isNullable: 0, displaySize: 2147483647, label: "COUNT__STIME", name:
"COUNT__STIME", schemaName: null,…}
> The metadata information returned by Kylin pushdown query and Cube query is
> inconsistent
>
>
> Key: KYLIN-5215
> URL: https://issues.apache.org/jira/browse/KYLIN-5215
> Project: Kylin
> Issue Type: Bug
> Components: Spark Engine
>Affects Versions: all, v4.0.1
> Environment: kylin 4.0.1
>Reporter: gaogao
>Priority: Major
> Attachments: cube_query.png, pushdown_query.png
>
>
> 问题：
> 在下压查询中返回的结果 和 cube 查询的结果不一致，下压查询中 columnMetas 的 label 和 name 字段会默认转换成大写！
> 对应源码类
> PushDownRunnerSparkImpl 50行
> ：
>
> {code:java}
> // fill in selected column meta
> for (int i = 0; i < columnCount; ++i) {
> int nullable = fieldList.get(i).isNullable() ? 1 : 0;
> columnMetas.add(new SelectedColumnMeta(false, false, false, false, nullable,
> true, Integer.MAX_VALUE,
> fieldList.get(i).getName().toUpperCase(Locale.ROOT),
> fieldList.get(i).getName().toUpperCase(Locale.ROOT), null, null,
> null, fieldList.get(i).getPrecision(), fieldList.get(i).getScale(),
> fieldList.get(i).getDataType(),
> fieldList.get(i).getDataTypeName(), false, false, false));
> }
>
> {code}
>
> pushdown query:
> !c:\Users\Administrator\AppData\Local\YNote\data\weixinobU7VjlOcNgcm0ZbmNGYzYRPZ__4\401fe7a7ea05495799145f2d413b0da4\clipboard.png!
> cube query:
> !c:\Users\Administrator\AppData\Local\YNote\data\weixinobU7VjlOcNgcm0ZbmNGYzYRPZ__4\0ef826f0229f42b59c4ad946a08bf6f3\clipboard.png!
>
> 我认为这个问题应该修复，因为在尝试对接superset时发现，有些此类框架会强校验元数据列的大小写，如果默认进行转换会导致无法适配，且cube
> query和pushdown query查询的元数据列结果不一致这也是无法接受的。
>
> 如果讨论有需要的话，我可以修复他，谢谢~
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