Fixed error mapper for constraint errors

[nItroFreeZer]

Fixed error mapper for constraint errors and added error 1451 #62

[codecov]

Codecov Report

Attention: 6 lines in your changes are missing coverage. Please review.

Comparison is base (57be534) 100.00% compared to head (a5c81f6) 96.47%.

❗ Current head a5c81f6 differs from pull request most recent head 916634a. Consider uploading reports for the commit 916634a to get more accurate results

Files	Patch %	Lines
mysql.go	57.14%	6 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##              main      #63      +/-   ##
===========================================
- Coverage   100.00%   96.47%   -3.53%     
===========================================
  Files            2        2              
  Lines          157      170      +13     
===========================================
+ Hits           157      164       +7     
- Misses           0        6       +6     

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[nItroFreeZer]

Thanks for suggestion 🙏

[Fs02]

LGTM