The value of the PARTITION_COMMENT column is an empty string if there is no partition comment.
mysql-test/r/information_schema_part.result:
result fix
mysql-test/r/ndb_dd_alter.result:
result fix
mysql-test/r/ndb_dd_backuprestore.result:
result fix
mysql-test/r/ndb_partition_range.result:
result fix
sql/sql_show.cc:
The value of the PARTITION_COMMENT column is an empty string if there is no partition comment.
and in SHOW CREATE TABLE
mysql-test/r/information_schema_part.result:
Added new test cases
mysql-test/t/information_schema_part.test:
Added new test cases
sql/sql_partition.cc:
Added missing check for LINEAR keyword on subpartitions
sql/sql_show.cc:
Added missing check for LINEAR keyword on subpartitions
Small remove of duplicate code