Group by substr() on collated database causes ERROR XJ001: Java exception:
'ASSERT FAILED col1.getClass() (class org.apache.derby.iapi.types.SQLVarchar)
expected to be the same as col2.getClass() (class
org.apache.derby.iapi.types.CollatorSQLVarchar):
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: DERBY-2960
URL: https://issues.apache.org/jira/browse/DERBY-2960
Project: Derby
Issue Type: Bug
Components: SQL
Affects Versions: 10.4.0.0
Reporter: Kathey Marsden
ij> create table alltypes (i int, s smallint, l bigint, c char(10), v
varchar(50), lvc long varchar,d double precision,
r real, dt date, t time, ts timestamp, b char(2) for bit data, bv varchar(8)
for bit data, lbv long varchar for bit data
, dc decimal(5,2));
0 rows inserted/updated/deleted
ij> select substr(c||v, 1, 4), count(*) from alltypes group by substr(c||v, 1,
4) ;
1 |2
----------------
0 rows selected
ij> insert into alltypes values (0, 100, 1000000, 'duplicate', 'this is
duplicated', 'also duplicated',200.0e0, 200.0e0,
date('1992-01-01'), time('12:30:30'), timestamp('1992-01-01 12:30:30'),
X'12af', x'0000111100001111', X'1234', 111.11)
;
1 row inserted/updated/deleted
ij> insert into alltypes values (0, 100, 1000000, 'duplicate', 'this is
duplicated', 'also duplicated',200.0e0, 200.0e0,
date('1992-01-01'), time('12:30:30'), timestamp('1992-01-01 12:30:30'),
X'12af', x'0000111100001111', X'1234', 111.11)
;
1 row inserted/updated/deleted
ij> select substr(c||v, 1, 4), count(*) from alltypes group by substr(c||v, 1,
4) ;
ERROR XJ001: Java exception: 'ASSERT FAILED col1.getClass() (class
org.apache.derby.iapi.types.SQLVarchar) expected to b
e the same as col2.getClass() (class
org.apache.derby.iapi.types.CollatorSQLVarchar):
org.apache.derby.shared.common.san
ity.AssertFailure'.
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