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Would you like to answer one of these unanswered questions instead?In this chapter, we will discuss the cursors in PL/SQL. A cursor holds the rows (one or more) returned by a SQL statement.So here's what I came up with: Thank you for your interest in this question.Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).UPDATE Table1 T1 SET T1= (SELECT T2FROM Table2 T2 WHERE T2= T1.id), T1= (SELECT T2FROM Table2 T2 WHERE T2= T1.id) WHERE T1IN (SELECT T2FROM Table2 T2 WHERE T2= T1.id); The full example is here: beef is in having the columns that you want to use as the key in parentheses in the where clause before 'in' and have the select statement with the same column names in parentheses.where (column1,column2) in ( If your table t1 and it's backup t2 have many columns, here's a compact way to do it.You will be given questions that you need to solve.
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The trick is that when you do select * from a pair of tables with duplicate column names, the 2nd one will get named _1.An explicit cursor should be defined in the declaration section of the PL/SQL Block.
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