Can we use cursor in MySQL?
MySQL supports cursors inside stored programs. The syntax is as in embedded SQL. Cursors have these properties: Asensitive: The server may or may not make a copy of its result table.
What is a cursor in MySQL?
MySQL cursor is a kind of loop facility given to traverse in the result of SQL one by one. We can operate on every result by using the cursor in MySQL. Cursors are supported in stored procedures, functions, and triggers only. MySQL cursor is available from version 5 or greater.
How do you call a cursor in MySQL?
Working with MySQL cursor A cursor must always associate with a SELECT statement. Next, open the cursor by using the OPEN statement. The OPEN statement initializes the result set for the cursor, therefore, you must call the OPEN statement before fetching rows from the result set.
What should I declare in MySQL cursor?
A cursor in database is a construct which allows you to iterate/traversal the records of a table. In MySQL you can use cursors with in a stored program such as procedures, functions etc. READ ONLY − Using these cursors you cannot update any table.
What is cursor function in SQL?
In SQL procedures, a cursor make it possible to define a result set (a set of data rows) and perform complex logic on a row by row basis. By using the same mechanics, an SQL procedure can also define a result set and return it directly to the caller of the SQL procedure or to a client application.
What is cursor in MySQL Geeksforgeeks?
Cursor is a Temporary Memory or Temporary Work Station. It is Allocated by Database Server at the Time of Performing DML(Data Manipulation Language) operations on Table by User. Cursors are used to store Database Tables. There are 2 types of Cursors: Implicit Cursors, and Explicit Cursors.
What is cursor and its types?
What is a cursor in database?
A database cursor is an identifier associated with a group of rows. It is, in a sense, a pointer to the current row in a buffer. You must use a cursor in the following cases: Statements that return more than one row of data from the database server: A SELECT statement requires a select cursor.
Why do we use cursor in SQL?