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https://issues.apache.org/jira/browse/HIVE-10231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14482271#comment-14482271
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Ashutosh Chauhan commented on HIVE-10231:
-----------------------------------------
[~ctang.ma] Since Hive's type system is lucy-gucy you might be able to get away
with quoting all the time, but I won't recommend it. My suggestion will be to
rather go on other extreme and help parser as much as we can about types. So,
generate constants in query like following:
{code}
switch (colType):
case Long:
colVal+"L";
case SmallInt:
colVal+"S";
case Tinyint:
colVal+"Y";
case Decimal:
colVal+"BD";
case String:
case Char:
case VarChar:
" ' "+colVal+" ' ";
case Date:
date " ' "+colVal+" ' ";
case TimeStamp:
timestamp " ' "+colVal+" ' ";
{code}
> Compute partition column stats fails if partition col type is date
> ------------------------------------------------------------------
>
> Key: HIVE-10231
> URL: https://issues.apache.org/jira/browse/HIVE-10231
> Project: Hive
> Issue Type: Bug
> Components: Statistics
> Affects Versions: 1.0.0
> Reporter: Chaoyu Tang
> Assignee: Chaoyu Tang
> Fix For: 1.2.0
>
> Attachments: HIVE-10231.patch
>
>
> Currently the command "analyze table .. partition .. compute statistics for
> columns" may only work for partition column type of string, numeric types,
> but not others like date. See following case using date as partition coltype:
> {code}
> create table colstatspartdate (key int, value string) partitioned by (ds
> date, hr int);
> insert into colstatspartdate partition (ds=date '2015-04-02', hr=2) select
> key, value from src limit 20;
> analyze table colstatspartdate partition (ds=date '2015-04-02', hr=2) compute
> statistics for columns;
> {code}
> you will get RuntimeException:
> {code}
> FAILED: RuntimeException Cannot convert to Date from: int
> 15/04/06 17:30:01 ERROR ql.Driver: FAILED: RuntimeException Cannot convert to
> Date from: int
> java.lang.RuntimeException: Cannot convert to Date from: int
> at
> org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorUtils.getDate(PrimitiveObjectInspectorUtils.java:1048)
> at
> org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorConverter$DateConverter.convert(PrimitiveObjectInspectorConverter.java:264)
> at
> org.apache.hadoop.hive.ql.optimizer.ConstantPropagateProcFactory.typeCast(ConstantPropagateProcFactory.java:163)
> at
> org.apache.hadoop.hive.ql.optimizer.ConstantPropagateProcFactory.propagate(ConstantPropagateProcFactory.java:333)
> at
> org.apache.hadoop.hive.ql.optimizer.ConstantPropagateProcFactory.foldExpr(ConstantPropagateProcFactory.java:242)
> ....
> {code}
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