Victoria Markman created DRILL-2244:
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Summary: Implicit cast between decimal data types is not
implemented
Key: DRILL-2244
URL: https://issues.apache.org/jira/browse/DRILL-2244
Project: Apache Drill
Issue Type: Improvement
Components: Execution - Codegen
Affects Versions: 0.8.0
Reporter: Victoria Markman
Assignee: Mehant Baid
I created two tables in drill with the following schema:
t1.c1 - decimal(8,2)
t2.c1 - decimal(18,4)
Attempt to join on these columns produces run time error on not implemented
compare function.
Since we do support cast from INT to BIGINT, this behavior is inconsistent.
{code}
0: jdbc:drill:schema=dfs> select * from x1, x2 where x1.c1 = x2.c1;
Query failed: RemoteRpcException: Failure while running fragment., Failure
finding function that runtime code generation expected. Signature: compare_to(
DECIMAL9:OPTIONALDECIMAL18:OPTIONAL, ) returns INT:REQUIRED [
53049aa6-7165-4e5a-9dc5-9efa832b4e49 on atsqa4-134.qa.lab:31010 ]
[ 53049aa6-7165-4e5a-9dc5-9efa832b4e49 on atsqa4-134.qa.lab:31010 ]
Error: exception while executing query: Failure while executing query.
(state=,code=0)
{code}
Explicit cast works:
{code}
0: jdbc:drill:schema=dfs> select * from x1 left outer join x2 on cast(x1.c1 as
decimal(18,2)) = x2.c1;
+------------+------------+
| c1 | c10 |
+------------+------------+
| 1032.65 | null |
+------------+------------+
1 row selected (0.137 seconds)
{code}
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