CockroachDB agent changelog

GSSD-1120: Fixed deduplication logic for primary keys columns with case insensitive collation;

Added precision fallback for null datetime precision;

Fixed primary key matching with NULL values in SQL queries;

Removed primary keys constraint from temp tables;

Added multiple missing data types (now 1:1 with PostgreSQL);

Improved support for enhaced columns discovery (precision, lenght, scale);

Improved performance and stability;

Optimized metadata queries;

Agent compatibility upgrade to Gluesync 2.2;