Mysql stored procedure cursor with parameter

Almost stored procedures that you develop require parameters. The parameters make the stored procedure more flexible and useful. How to import an SQL file using the command line.

Creating a procedure in mySql with parameters. MySQL Procedure with Cursor Parameter. To handle a result set inside a stored procedure , you use a cursor.

A cursor allows you to iterate a set of rows returned by a query and process each row individually. Read-only: you cannot update data in the underlying table through the cursor. Hi, I am having trouble to declare a cursor for a query passed as parameter to a stored procedure.

In this SP, we have one input parameter and two output parameters. This defines the signature of the SP. A procedure has a name, a parameter list, and SQL statement(s).

An INOUT parameter is initialized by the caller, can be modified by the procedure , and any change made by the procedure is visible to the caller when the procedure returns. For each OUT or INOUT parameter , pass a user-defined variable in the CALL statement that invokes the procedure so that you can obtain its value when the procedure returns. We just used two parameter modes (IN and OUT).

A MySqlCommand object is create but rather than taking an SQL query as a parameter , it takes the name of the stored procedure to call. This method calls the stored procedure named by the proc_name argument. The args sequence of parameters must contain one entry for each argument that the procedure expects.

Input parameters are left untouched. Driver returns garbage output parameter value when stored procedure has cursor. If I remove open v_ cursor.

A stored procedure can have parameters so you can pass values to it and get the result back. For example, you can have a stored procedure that returns customers by country and city. Parameters – introduce you to various types of parameters used in stored procedures including IN, OUT, and INOUT parameter.

In this tutorial, we will focus on what they are, and how they can make your life easier. Write a dynamic sql by constructing the passed in table name and compute the SUM, AVG, MAX, MIN of scores by using group by on event_id. Hi, I am relatively new to the SQL server prog and had a follwing query regarding the stored prodecure syntax. This stored procedure is used to populate data in the report based on the user parameter supplied from an asp page. I am not getting the acurate syntax to declare a cursor and define it based on the user supplied parameters.

Can I return a cursor as an OUT parameter from a stored procedure ? Cursor is supported in all SQL Server versions i. A DECLARE statement is used to define and name the cursorin this case ordernumbers. Nothing is done with the cursor , and as soon as the stored procedure finishes processing it will cease to exist (as it is local to the stored procedure itself). Now that the cursor is define it is ready to be opened.

An IN parameter passes a value into a procedure. Stored procedure with IN, OUT, INOUT parameters. The procedure might modify the value, but.