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In version 1.4.184, "group by" ignored the table name, and could pick a select column by mistake. Example: select 0 as x from system_range(1, 2) d group by d.x;

found by CodePro

found by CodePro

found by CodePro

the logic that cleared the flag could never be reached, resulting in performance degradation.
Reported by Alexander Nesterov.

MVStore: imported BLOB and CLOB data sometimes disappeared. This was caused by a bug in the ObjectDataType comparison.

Group by with a quoted select column name alias didn't work. Example: select 1 "a" from dual group by "a" 

In version 1.3.183, indexes that contains columns with a default value generated by a sequence where not used. This includes identity and auto-increment columns. This bug was introduced by supporting "rownum" in views and derived tables.