Java JDBC, using parameters in a SQL delete Statement with Java JDBC

Pubblicato il: 01 gennaio 1970
sul canale di: PCWorkshops Coding Courses
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In Java JDBC, use parameters in and SQL Statement to delete specific records with Java JDBC

Why Use Parameters in Java JDBC?
It makes your SQL Statement flexibly.

E.g.: I code a Client id into the SQL Statement, e.g.
Select from Users where userid = 1;
But now I will always delete user 1 , but what if I don't know whic user to program in to the SQL Statement, then I do the following:
Select from Users where userid = ?;
JDBC will then, every time that you execute the delete statement, replace the ? with a variable value for the userid.


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