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I need help .. i want to write code make the email enter only for one time and if the person write the same email again show to him an error message - i use MySQL for data base :"

c#javadatabasehelp
19th Mar 2019, 5:47 PM
haifa
5 Réponses
+ 1
Puedes utilizar la propiedad unique en sql, sobre la columna. Esto te permite ingresar solamente el mismo email 1 ves.
21st Mar 2019, 10:03 PM
Divier Bula
Divier Bula - avatar
0
Hello
5th Nov 2022, 7:39 PM
Ramazon Valiyev
Ramazon Valiyev - avatar
0
oh nice
26th Sep 2023, 12:33 AM
mona jean
- 1
4th Feb 2020, 11:40 AM
Ratnakumari Mandapati
Ratnakumari Mandapati - avatar
- 1
4th Feb 2020, 11:41 AM
Ratnakumari Mandapati
Ratnakumari Mandapati - avatar

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