[fix](function) Fix wrong nullable processing for convert_tz #38764
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Mryange
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## Proposed changes Issue Number: close #xxx This pr make `convert_tz` use default nullity processing logic rather than `update_null_map` manually to get correct result. The bug of `update_null_map` will be fixed by #38787 before: ```sql mysql> select convert_tz(dt, '+00:00', IF(property_value IS NULL, '+00:00', property_value)) from cvt_tz; +--------------------------------------------------------------------------------+ | convert_tz(dt, '+00:00', if(property_value IS NULL, '+00:00', property_value)) | +--------------------------------------------------------------------------------+ | 2024-04-18 23:20:00 | | | | | | 2024-04-18 23:20:00 | | | | | | 2024-04-18 23:20:00 | | | | 2024-04-18 23:20:00 | | | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | | | | | 2024-04-18 23:20:00 | | | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | | | 2024-04-18 23:20:00 | +--------------------------------------------------------------------------------+ ``` after: ```sql mysql> select convert_tz(dt, '+00:00', IF(property_value IS NULL, '+00:00', property_value)) from cvt_tz; +--------------------------------------------------------------------------------+ | convert_tz(dt, '+00:00', if(property_value IS NULL, '+00:00', property_value)) | +--------------------------------------------------------------------------------+ | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | | 2024-04-18 23:20:00 | +--------------------------------------------------------------------------------+ ```
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Proposed changes
Issue Number: close #xxx
This pr make
convert_tzuse default nullity processing logic rather thanupdate_null_mapmanually to get correct result. The bug ofupdate_null_mapwill be fixed by #38787before:
after: