Multiple column names to be included in --update-key argument with SQOOP export
(update)
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Key: SQOOP-313
URL: https://issues.apache.org/jira/browse/SQOOP-313
Project: Sqoop
Issue Type: New Feature
Reporter: Bejoy KS
Currently the --update-key argument in SQOOP export (Updates) supports only one
column name. But in most real time scenarios the target db table would have
composite primary key hence in the SQL generated by SQOOP we may have to
include more than one condition separated by AND in the WHERE clauses, ie the
db UPDATE query generated should be like
UPDATE .... SET ... WHERE PKColumn1 = '<value>' AND PKColumn2= '<value>' AND
...
For this we need to modify --update-key argument to accomodate more that one
column name which is separated using some separator like comma.
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