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From Andries Engelbrecht <aengelbre...@mapr.com>
Subject Re: Exception While Querying Decimal Fields in Apache Drill
Date Fri, 27 Apr 2018 14:41:12 GMT
What version of Drill are you using?
Also is planner.enable_decimal_data_type set to true on the system?


´╗┐On 4/27/18, 7:24 AM, "Peter Edike" <peter.edike@interswitchgroup.com> wrote:

    Tried That, It did not work. Still Fails with the exception. Let me even add that even
if the query is a simple select ....from statement, as long any of the fields is decimal type,
the statement will fail with the stated exception
    Please Help.... a lot depends on this
    Best regards,
    Peter Edike
    This message has been marked as CONFIDENTIAL on Friday, April 27, 2018 @ 3:24:36 PM
    -----Original Message-----
    From: Andries Engelbrecht <aengelbrecht@mapr.com> 
    Sent: Friday, April 27, 2018 3:07 PM
    To: user@drill.apache.org
    Subject: Re: Exception While Querying Decimal Fields in Apache Drill
    Perhaps try to convert the predicate and select operations involving the decimal types
to float or similar.
    i.e tran_completed = 1.0   and ((cast(SETTLE_AMOUNT_IMPACT as double) *(-1.0))/100.0)
    Alternatively you may have to cast the decimals as float, but that will be more cumbersome.
    On 4/27/18, 5:18 AM, "Peter Edike" <peter.edike@interswitchgroup.com> wrote:
        I am trying to run the following query in apache drill, I am querying data stored
in parquet files using the following query
        select pan, count(*) as number_of_transactions ,
        terminal_id,SUM((cast(SETTLE_AMOUNT_IMPACT as double) *-1)/100) AS settle_amount_impact
        from dfs.`/iswdata/storage/products/superswitch/parquet/transactions`
        where pan like '506126%' and terminal_id like '1%' and
        sink_node_name like ('SWTDB%')
        and source_node_name not like ('SWTDBLsrc')
        and tran_completed=1
        and tran_reversed = 0
        and tran_postilion_originated = 1
        AND tran_type = '01'
        --and pan like '506126%0011'
        group by pan,terminal_id
        The Schema for the data I am querying is as follows
        post_tran_id LONG
         post_tran_cust_id :LONG
         settle_entity_id :INTEGER
         batch_nr : INTEGER
         prev_post_tran_id : LONG
         next_post_tran_id : LONG
         sink_node_name : STRING
         tran_postilion_originated : DECIMAL
         tran_completed : DECIMAL
         tran_amount_req : DECIMAL
         tran_amount_rsp : DECIMAL
         settle_amount_impact : DECIMAL
         tran_cash_req : DECIMAL
         tran_cash_rsp : DECIMAL
        tran_currency_code : STRING
        tran_tran_fee_req : DECIMAL
        tran_tran_fee_rsp : DECIMAL
        tran_tran_fee_currency_code : STRING
        tran_proc_fee_req : DECIMAL
        tran_proc_fee_rsp : DECIMAL
        tran_proc_fee_currency_code : STRING
        settle_amount_req : DECIMAL
        settle_amount_rsp : DECIMAL
        settle_cash_req : DECIMAL
        settle_cash_rsp : DECIMAL
        settle_tran_fee_req : DECIMAL
        settle_tran_fee_rsp : DECIMAL
        settle_proc_fee_req : DECIMAL
        settle_proc_fee_rsp : DECIMAL
        settle_currency_code : STRING
        However When I run the query against the dataset, I get the following exception
        SYSTEM ERROR: ClassCastException: org.apache.drill.exec.vector.NullableDecimal28SparseVector
cannot be cast to org.apache.drill.exec.vector.VariableWidthVector
        More so, the same error occurs when I include a decimal field in the select clause.
Please, is there something I am missing or doing wrong, Any pointer will be deeply appreciated
        Kind Regards

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