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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-4970) Wrong results when casting double to bigint or int
Date Mon, 03 Jul 2017 17:28:00 GMT

    [ https://issues.apache.org/jira/browse/DRILL-4970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16072749#comment-16072749
] 

ASF GitHub Bot commented on DRILL-4970:
---------------------------------------

Github user vvysotskyi commented on a diff in the pull request:

    https://github.com/apache/drill/pull/863#discussion_r125332691
  
    --- Diff: exec/java-exec/src/test/java/org/apache/drill/exec/fn/impl/TestCastFunctions.java
---
    @@ -78,4 +81,71 @@ public void testToDateForTimeStamp() throws Exception {
             .build()
             .run();
       }
    +
    +  @Test // DRILL-4970
    +  public void testCastNegativeFloatToInt() throws Exception {
    +    try {
    +      test("create table dfs_test.tmp.table_with_float as\n" +
    --- End diff --
    
    The initial bug was caused by changing the input holder when negative values casting,
so current test checks the correctness of the fix only.
    Added tests to check cast functions with boundary values. 


> Wrong results when casting double to bigint or int
> --------------------------------------------------
>
>                 Key: DRILL-4970
>                 URL: https://issues.apache.org/jira/browse/DRILL-4970
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Execution - Data Types
>    Affects Versions: 1.8.0
>            Reporter: Robert Hou
>            Assignee: Volodymyr Vysotskyi
>         Attachments: test_table
>
>
> This query returns the wrong result
> {code:sql}
> 0: jdbc:drill:zk=10.10.100.186:5181/drill/rho> select count(\*) from test_table where
(int_id > -3025 and bigint_id <= -256) or (cast(double_id as bigint) >= -255 and
double_id <= -5);
> +---------+
> | EXPR$0  |
> +---------+
> | 2769    |
> +---------+
> {code}
> Without the cast, it returns the correct result:
> {code:sql}
> 0: jdbc:drill:zk=10.10.100.186:5181/drill/rho> select count(\*) from test_table where
(int_id > -3025 and bigint_id <= -256) or (double_id >= -255 and double_id <=
-5);
> +---------+
> | EXPR$0  |
> +---------+
> | 3020    |
> +---------+
> {code}
> By itself, the result is also correct:
> {code:sql}
> 0: jdbc:drill:zk=10.10.100.186:5181/drill/rho> select count(\*) from test_table where
(cast(double_id as bigint) >= -255 and double_id <= -5);
> +---------+
> | EXPR$0  |
> +---------+
> | 251     |
> +---------+
> {code}



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