Write a PL/SQL blocks, output all the serial number of readers of books, name, date of gender, the library name, borrowing
I know where the error prompt wrong I want to consult how to use the loop to rescue this topic make

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Dbms_output. Put_line ()

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reference 1st floor weixin_45069503 response:

dbms_output. Put_line ()

did out thanks a lot

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From the table name is borrowreturn1, but is written in the where borrowreturn, sent a 1 (and possibly l)

To the same,