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Updating record through cursor

Relational database management systems including SQL Server are very good at processing data in sets. However, if you want to process data on row-by-row basis rather than in sets, cursors are your only choice. To populate a cursor, database tables are iterated on row-by-row basis rather than in sets. While a cursor is being populated, the table being iterated is locked. Row operations can take a long time to execute depending upon the type of task being performed on each row. While the cursor is open, a table cannot be accessed or updated by the other users.
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Oracle CURSOR FOR UPDATE

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How to Use Update Cursors in SQL Server - CodeProject

By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Cursors are generally not a good solution, so any solution such as Mikael Eriksson's is potentially better. However if you really have to use a cursor to do an update then you should mark it as insensitive:.
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Understanding cursors and replacing them with JOINs in SQL Server

Cursors allow you to step through a set of data one record at a time. Posted by Andrew Gould on 26 March You need a minimum screen resolution of about pixels width to see our blogs.
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By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. I am trying to write a cursor. I have created a table for capturing login name and time from sys. Now, I need to write a cursor to update the login time to last login time if the login already exists and insert a row in case login does not exists in my table.
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