[DRILL-5298] CTAS with 0 records from a SELECT query should create the table with metadata

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.9.0
• Fix Version/s: 1.9.0
• Component/s: Metadata, Query Planning & Optimization, SQL Parser

Environment

MapR 5.2

• Assignee: Unassigned
• Reporter: Senthilkumar
• Created: 25/Feb/17 07:06
• Updated: 27/Feb/17 09:13
• Resolved: 27/Feb/17 09:13

Description

Hello team,

I create a table in Drill using CTAS as

CREATE TABLE CTAS_TEST AS SELECT * FROM `hive.default`.`test` WHERE 1 = 0

It runs successfully.

But the table is not getting created as there are 0 records getting returned from the SELECT query.

CTAS should still go ahead and create the table with the column metadata.

When BI tools fire up multi-pass queries, with CTAS in the first query, the subsequent queries fail because of a missing table.

In databases like SQL Server, Postgres, CTAS will create the table, even if the SELECT doesnt return any rows.

Issue Links

• duplicates: DRILL-4517 Reading emtpy Parquet file failes with java.lang.IllegalArgumentException