Details
-
Bug
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Status: Resolved
-
Major
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Resolution: Fixed
-
0.8.0
Description
create table t1(c1) as select cast(null as decimal(28,4)) from `t1.csv`; message root { optional double c1; <-- Wrong, should be decimal }
This is very commonly used construct to convert csv files to parquet files, that's why I'm marking this bug as critical.
create table t2 as select case when columns[3] = '' then cast(null as decimal(28,4)) else cast(columns[3] as decimal(28, 4)) end from `t1.csv`;
Correct - cast string literal to decimal
create table t3(c1) as select cast('12345678901234567890.1234' as decimal(28,4)) from `t1.csv`; message root { required fixed_len_byte_array(12) c1 (DECIMAL(28,4)); }
Correct - cast literal from csv file as decimal
create table t4(c1) as
select
cast(columns[3] as decimal(28,4))
from `t1.csv`;
message root {
optional fixed_len_byte_array(12) c1 (DECIMAL(28,4));
}
Correct - case statement (no null involved)
create table t5(c1) as select case when columns[3] = '' then cast('1111' as decimal(28,4)) else cast(columns[3] as decimal(28,4)) end from `t1.csv`; message root { optional fixed_len_byte_array(12) c1 (DECIMAL(28,4)); }
Attachments
Attachments
Issue Links
- relates to
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DRILL-3367 Implement SQL data type DECIMAL.
- Open
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DRILL-6094 Decimal data type enhancements
- Closed