ajantha-bhat opened a new pull request #3504: [CARBONDATA-3614] Support Alter table properties set/unset for longstring columns
URL:
https://github.com/apache/carbondata/pull/3504
If some users want to change string column to long string columns as data is huge. can use this command.
`ALTER TABLE table_name SET TBLPROPERTIES('long_String_columns'='col1,col2')`
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