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From "Khurram Faraaz (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-5064) wrong results - equijoin involving interval day type columns
Date Tue, 22 Nov 2016 14:17:59 GMT
Khurram Faraaz created DRILL-5064:
-------------------------------------

             Summary: wrong results - equijoin involving interval day type columns
                 Key: DRILL-5064
                 URL: https://issues.apache.org/jira/browse/DRILL-5064
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Flow
    Affects Versions: 1.9.0
            Reporter: Khurram Faraaz



The problem exists on Drill 1.9.0 git commit ID: 4312d65 (i.e difference in results) even
without the nullability check ... OR ( t1.col_intrvl_day IS NULL AND t2.col_intrvl_day IS
NULL ). A simple equi-join involving interval type columns returns wrong results.

{noformat}
postgres=# SELECT t1.col_intrvl_dy , t2.col_intrvl_dy
postgres-# FROM typeall_l t1 INNER JOIN  typeall_r t2
postgres-# ON  t1.col_intrvl_dy= t2.col_intrvl_dy;
      col_intrvl_dy       |      col_intrvl_dy
--------------------------+--------------------------
 9 years 10 mons 9 days   | 9 years 10 mons 9 days
 25 years 11 mons 22 days | 25 years 11 mons 22 days
 23 years 10 mons 25 days | 23 years 10 mons 25 days
 26 years 8 mons 12 days  | 26 years 8 mons 12 days
 13 years 6 mons 31 days  | 13 years 7 mons 1 day
 27 years 11 mons 17 days | 27 years 11 mons 17 days
 27 years 11 mons 17 days | 27 years 11 mons 17 days
 23 years 5 mons 20 days  | 23 years 5 mons 20 days
 14 years 7 mons 12 days  | 14 years 7 mons 12 days
 4 years 10 mons 11 days  | 4 years 10 mons 11 days
 21 years 31 days         | 21 years 1 mon 1 day
 23 years 10 mons 25 days | 23 years 10 mons 25 days
(12 rows)
{nformat}

{noformat}
0: jdbc:drill:schema=dfs.tmp> SELECT t1.col_intrvl_day , t2.col_intrvl_day
. . . . . . . . . . . . . . > FROM typeall_l t1 INNER JOIN  typeall_r t2
. . . . . . . . . . . . . . > ON  t1.col_intrvl_day= t2.col_intrvl_day;
+-----------------+------------------+
| col_intrvl_day  | col_intrvl_day0  |
+-----------------+------------------+
| P9DT33156S      | P9DT33156S       |
| P22DT25501S     | P22DT25501S      |
| P25DT10592S     | P25DT10592S      |
| P17DT30024S     | P17DT30024S      |
| P17DT30024S     | P17DT30024S      |
+-----------------+------------------+
5 rows selected (0.515 seconds)
{noformat}

Parquet schema details of the two files used in the join query

[root@centos-01 intrvl]# ~/parquet-tools/parquet-schema typeall_l/0_0_0.parquet
message root {
  optional int32 col_int;
  optional binary col_chr (UTF8);
  optional binary col_vrchr1 (UTF8);
  optional binary col_vrchr2 (UTF8);
  optional int32 col_dt (DATE);
  optional int32 col_tim (TIME_MILLIS);
  optional int64 col_tmstmp (TIMESTAMP_MILLIS);
  optional float col_flt;
  optional fixed_len_byte_array(12) col_intrvl_yr (INTERVAL);
  optional fixed_len_byte_array(12) col_intrvl_day (INTERVAL);
  optional boolean col_bln;
}

[root@centos-01 intrvl]# ~/parquet-tools/parquet-schema typeall_r/0_0_0.parquet
message root {
  optional int32 col_int;
  optional binary col_chr (UTF8);
  optional binary col_vrchr1 (UTF8);
  optional binary col_vrchr2 (UTF8);
  optional int32 col_dt (DATE);
  optional int32 col_tim (TIME_MILLIS);
  optional int64 col_tmstmp (TIMESTAMP_MILLIS);
  optional float col_flt;
  optional fixed_len_byte_array(12) col_intrvl_yr (INTERVAL);
  optional fixed_len_byte_array(12) col_intrvl_day (INTERVAL);
  optional boolean col_bln;
}



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