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A cursor is a database object used to retrieve and manipulate data in a database management system.
A cursor allows for sequential processing of query results one row at a time.
It can be used to update or delete specific rows in a result set.
Cursors are commonly used in stored procedures and triggers.
Example: DECLARE cursor_name CURSOR FOR SELECT column1, column2 FROM table_name;
Query using listagg function to concatenate values into a single string
Use the listagg function followed by the column name and delimiter in parentheses
Specify the order by clause if needed
Can be used in SQL queries to display aggregated data
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