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mariadb/mysql-test/suite/versioning/t
Eugene Kosov 9dc81f7d38 MDEV-16330 Allow instant change of WITH SYSTEM VERSIONING column attribute
Changing columns WITH/WITHOUT SYSTEM VERSIONING doens't require to read data at
all. Thus it should be an instant operation.

Patch also fixes a bug when ALTER_COLUMN_UNVERSIONED wasn't passed to InnoDB
to change its internal structures.

change_field_versioning_try(): apply WITH/WITHOUT SYSTEM VERSIONING
change in SYS_COLUMNS for one field.

change_fields_versioning_try(): apply WITH/WITHOUT SYSTEM VERSIONING
change in SYS_COLUMNS for every changed field in a table.

change_fields_versioning_cache(): update cache for versioning property
of columns.
2018-06-20 19:23:48 +03:00
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