What is cursor in plsql

We can give the cursor name instead of range limit in the FOR loop statement so that the loop will work from the first record of the cursor to the last record of the cursor. The cursor variable, opening of cursor, fetching and closing of the cursor will be done implicitly by the FOR loop. Example 1 : In this example, we will project all the employee name from emp table using a cursor-FOR loop. Skip to content.

Report a Bug. Previous Prev. Next Continue. Home Testing Expand child menu Expand. SAP Expand child menu Expand. Both implicit and explicit cursors have the same functionality, but they differ in the way they are accessed. Oracle provides few attributes called as implicit cursor attributes to check the status of DML operations.

INTO statement return at least one row. Finally, let's see a cursor in action. Above table student will be used in following program, where we will use the SELECT query to fetch the names of all the students, store them in a cursor and then loop around the cursor to print the names. A Cursor FOR LOOP is a loop meant for the cursor which automatically checks for the row count and exits the loop when all the data stored in the cursor is iterated.

A cursor FOR loop automatically does the following:. A parameterized cursor is a cursor with arguments and it allows us to create dynamic SQL queries with conditions containing the variables. After declaring a parameterized cursor, when we open it we have to provide the value to be used in the parameterized cursor, like this:.

Learn Core Java. Java Examples Java 8 Java 11 Java HTML 5 Interactive. In this article, we are going to discuss about Cursors in Oracle. So basically Cursor is a pointer to a context area. The context area is basically a memory space for processing an SQL statement. Thus context area contains all information which is required to process the statement. So, basically the cursor points to this particular area. On executing the statement the cursor holds the returned result set which can contain single or multiple rows.

As we go on we will learn about cursor in more detail. As the name suggests implicit cursors are created by oracle.