[DRILL-1876] Implement concatenation operator ( || )

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.7.0
• Fix Version/s: 0.8.0
• Component/s: Documentation
• Assignee: Unassigned
• Reporter: Victoria Markman
• Created: 16/Dec/14 22:13
• Updated: 24/Apr/15 21:02
• Resolved: 24/Apr/15 21:02

Description

It is documented, but it does not work at all (DRILL-779)
Workaround exists: concat function

As of version 0.7.0 (git.commit.id.abbrev=3b0ff5d)

(1)
0: jdbc:drill:schema=dfs> select 'abc' || 'def' from cp.`tpch/nation.parquet`;
Query failed: Query failed: Failure while running fragment.[ dc4727ed-4ac3-42bb-a60b-f8f370dd4fcf on atsqa4-133.qa.lab:31010 ]
[ dc4727ed-4ac3-42bb-a60b-f8f370dd4fcf on atsqa4-133.qa.lab:31010 ]
Error: exception while executing query: Failure while executing query. (state=,code=0)

(2)
0: jdbc:drill:schema=dfs> select n_name || 'xyz' from cp.`tpch/nation.parquet`;
Query failed: Query failed: Unexpected exception during fragment initialization: Internal error: pre-condition failed: SqlTypeUtil.sameNamedType(argTypes[0], argTypes[1])
Error: exception while executing query: Failure while executing query. (state=,code=0)

(3)
0: jdbc:drill:schema=dfs> select cast(n_nationkey as varchar(10)) || n_name from cp.`tpch/nation.parquet`;
Query failed: Query failed: Unexpected exception during fragment initialization: Internal error: pre-condition failed: SqlTypeUtil.sameNamedType(argTypes[0], argTypes[1])
Error: exception while executing query: Failure while executing query. (state=,code=0)

(4)
0: jdbc:drill:schema=dfs> select 'abc' || 'cde' from `test.json`;
Query failed: Query failed: Failure while running fragment.[ 01194cdf-746c-45db-ae4e-014590bfbffd on atsqa4-133.qa.lab:31010 ]
[ 01194cdf-746c-45db-ae4e-014590bfbffd on atsqa4-133.qa.lab:31010 ]
Error: exception while executing query: Failure while executing query. (state=,code=0)

Issue Links

• is duplicated by: DRILL-2054 Support `||` as "concat operator" for varchar inputs