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Oracle: Delete duplicate rows from table

Oracle: Extract Initials of Names

ORA-01723: zero-length columns are not allowed

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Oracle Error Codes

ORA-00000   •   ORA-00001   •   ORA-00018
ORA-00020   •   ORA-00027   •   ORA-00054
ORA-00257   •   ORA-00600   •   ORA-00604
ORA-00843   •   ORA-00849   •   ORA-00904
ORA-00911   •   ORA-00936   •   ORA-00942
ORA-01031   •   ORA-01034   •   ORA-01017
ORA-01157   •   ORA-01403   •   ORA-01422
ORA-01436   •   ORA-01439   •   ORA-01460
ORA-01476   •   ORA-01489   •   ORA-01555
ORA-01722   •   ORA-01723   •   ORA-01779
ORA-01821   •   ORA-01830   •   ORA-01843
ORA-02030   •   ORA-02041   •   ORA-02303
ORA-02438   •   ORA-03113   •   ORA-03135
ORA-04031   •   ORA-06502   •   ORA-06512
ORA-06530   •   ORA-06550   •   ORA-08002
ORA-12838   •   ORA-12154   •   ORA-12514
ORA-12545   •   ORA-12560   •   ORA-16000
ORA-23404   •   ORA-27101   •   ORA-28002
ORA-30009   •   PLS-00172

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