[DRILL-1895] Improve message where implicit cast fails (e.g. with IN clause)

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 0.7.0
• Fix Version/s: Future
• Component/s: Execution - Data Types
• Assignee: Unassigned
• Reporter: Victoria Markman
• Created: 18/Dec/14 23:52
• Updated: 08/Oct/15 20:10

Description

– Works, because value in "IN CLAUSE" is a compatible numeric type

0: jdbc:drill:schema=dfs> select * from cp.`tpch/nation.parquet` where n_regionkey in (4);
+-------------+------------+-------------+------------+
| n_nationkey |   n_name   | n_regionkey | n_comment  |
+-------------+------------+-------------+------------+
| 4           | EGYPT      | 4           | y above the carefully unusual theodolites. final dugouts are quickly across the furiously regular d |
| 10          | IRAN       | 4           | efully alongside of the slyly final dependencies.  |
| 11          | IRAQ       | 4           | nic deposits boost atop the quickly final requests? quickly regula |
| 13          | JORDAN     | 4           | ic deposits are blithely about the carefully regular pa |
| 20          | SAUDI ARABIA | 4           | ts. silent requests haggle. closely express packages sleep across the blithely |
+-------------+------------+-------------+------------+
5 rows selected (0.092 seconds)

– WORKS (trying to convert literal string to numeric and succeeds, because it can be implicitly converted)

0: jdbc:drill:schema=dfs> select * from cp.`tpch/nation.parquet` where n_regionkey in ('4');
+-------------+------------+-------------+------------+
| n_nationkey |   n_name   | n_regionkey | n_comment  |
+-------------+------------+-------------+------------+
| 4           | EGYPT      | 4           | y above the carefully unusual theodolites. final dugouts are quickly across the furiously regular d |
| 10          | IRAN       | 4           | efully alongside of the slyly final dependencies.  |
| 11          | IRAQ       | 4           | nic deposits boost atop the quickly final requests? quickly regula |
| 13          | JORDAN     | 4           | ic deposits are blithely about the carefully regular pa |
| 20          | SAUDI ARABIA | 4           | ts. silent requests haggle. closely express packages sleep across the blithely |
+-------------+------------+-------------+------------+
5 rows selected (0.073 seconds)

– FAILS (can't be converted to numeric type)

0: jdbc:drill:schema=dfs> select * from cp.`tpch/nation.parquet` where n_regionkey in ('abc');
Query failed: Query failed: Failure while running fragment., abc [ 4578a64c-75c5-4acf-be8c-28ce0db8623d on atsqa4-133.qa.lab:31010 ]
[ 4578a64c-75c5-4acf-be8c-28ce0db8623d on atsqa4-133.qa.lab:31010 ]
Error: exception while executing query: Failure while executing query. (state=,code=0)

0: jdbc:drill:schema=dfs> select * from cp.`tpch/nation.parquet` where n_regionkey in ('4');
+-------------+------------+-------------+------------+
| n_nationkey |   n_name   | n_regionkey | n_comment  |
+-------------+------------+-------------+------------+
| 4           | EGYPT      | 4           | y above the carefully unusual theodolites. final dugouts are quickly across the furiously regular d |
| 10          | IRAN       | 4           | efully alongside of the slyly final dependencies.  |
| 11          | IRAQ       | 4           | nic deposits boost atop the quickly final requests? quickly regula |
| 13          | JORDAN     | 4           | ic deposits are blithely about the carefully regular pa |
| 20          | SAUDI ARABIA | 4           | ts. silent requests haggle. closely express packages sleep across the blithely |
+-------------+------------+-------------+------------+
5 rows selected (0.073 seconds)

It would be really neat to get a descriptive error message.
Postges example:

postgres=# select * from t1 where c1 in ('abc');
ERROR:  invalid input syntax for integer: "abc"