> Min function working incorrectly for string type with dictionary include in presto.
> -----------------------------------------------------------------------------------
>
> Key: CARBONDATA-2152
> URL:
https://issues.apache.org/jira/browse/CARBONDATA-2152> Project: CarbonData
> Issue Type: Bug
> Components: presto-integration
> Affects Versions: 1.3.0
> Environment: Spark2.1
> Presto0.187
> Reporter: Sangeeta Gulia
> Assignee: anubhav tarar
> Priority: Major
> Fix For: 1.4.0
>
> Attachments: lineitem.csv
>
>
> Steps to reproduce:
> 1) Create and Load in carbondata.
> create table if not exists lineitem_carbon1(
> L_SHIPDATE date,
> L_SHIPMODE string,
> L_SHIPINSTRUCT string,
> L_RETURNFLAG string,
> L_RECEIPTDATE date,
> L_ORDERKEY string,
> L_PARTKEY string,
> L_SUPPKEY string,
> L_LINENUMBER int,
> L_QUANTITY double,
> L_EXTENDEDPRICE double,
> L_DISCOUNT double,
> L_TAX double,
> L_LINESTATUS string,
> L_COMMITDATE date,
> L_COMMENT string
> ) STORED BY 'carbondata'
> TBLPROPERTIES ('DICTIONARY_INCLUDE'='L_SHIPMODE,L_SHIPINSTRUCT,L_RETURNFLAG,L_LINESTATUS', 'table_blocksize'='300', 'no_inverted_index'='L_ORDERKEY, L_PARTKEY, L_SUPPKEY, L_COMMENT');
> load data inpath "hdfs://localhost:54310/user/hduser/input-files/lineitem.csv" into table lineitem_carbon1 options('DATEFORMAT' = 'yyyy-MM-dd','DELIMITER'='|','FILEHEADER'='L_ORDERKEY,L_PARTKEY,L_SUPPKEY,L_LINENUMBER,L_QUANTITY,L_EXTENDEDPRICE,L_DISCOUNT,L_TAX,L_RETURNFLAG,L_LINESTATUS,L_SHIPDATE,L_COMMITDATE,L_RECEIPTDATE,L_SHIPINSTRUCT,L_SHIPMODE,L_COMMENT','BAD_RECORDS_LOGGER_ENABLE'='true', 'BAD_RECORDS_ACTION'='FORCE');
>
> 0: jdbc:hive2://localhost:10000> select min(l_shipmode) from lineitem_carbon1;
> +------------------+--+
> | min(l_shipmode) |
> +------------------+--+
> | AIR |
> +------------------+--+
> 2) Connect to carbondata store from presto and perform the below query from presto-cli:
> presto:performance> select min(l_shipmode) from lineitem_carbon1;
> _col0
> ----------
> @NU#LL$!
> (1 row)
>
> Expected: On presto also, it should give the correct output as shown on carbondata.
>
Locked
