Ian Hellstrom created DRILL-4506:
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Summary: Allow substitution variables in SQL scripts
Key: DRILL-4506
URL: https://issues.apache.org/jira/browse/DRILL-4506
Project: Apache Drill
Issue Type: Bug
Components: SQL Parser
Reporter: Ian Hellstrom
It would be great if substitution variables could be created à la SQL*Plus in
scripts. This would be especially helpful when objects need to be (re-)created
from scratch (i.e. in testing), and they share e.g. workspaces, which have to
be hard-coded otherwise.
The following is a rough idea (based on SQL*Plus syntax):
{code}
IN_LOCATION=hdfs.project
OUT_LOCATION=hdfs.storage
CREATE VIEW &OUT_LOCATION.view_name AS
SELECT * FROM &IN_LOCATION.table_name;
{code}
For a first implementation, it would be best to have simply substitution
variables and not allow computations to be done, although it is conceivable
that that would be a second step.
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