What is Alter procedure in MySQL?

If you mean you want to edit the Procedure, then you can’t according to the MySQL docs: This statement can be used to change the characteristics of a stored procedure. More than one change may be specified in an ALTER PROCEDURE statement.

What does alter procedure do in SQL?

In SQL Server, this statement alters a previously created procedure (using the CREATE PROCEDURE statement) but doesn’t change permissions or affect dependent stored procedures or triggers. In Oracle, this command simply recompiles a PL/SQL stored procedure, but does not allow the code to be changed.

What is alter routine in MySQL?

This statement can be used to change the characteristics of a stored procedure. … However, you cannot change the parameters or body of a stored procedure using this statement; to make such changes, you must drop and re-create the procedure using DROP PROCEDURE and CREATE PROCEDURE .

Can we alter stored procedure in MySQL?

Fortunately, MySQL does not have any statement that allows you to directly modify the parameters and body of the stored procedure. To make such changes, you must drop ad re-create the stored procedure using the DROP PROCEDURE and CREATE PROCEDURE statements.

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How do I edit a procedure in MySQL?

To modify an existing stored routine (procedure or function), double-click the node of the routine to modify, or right-click this node and choose the Alter Routine command from the context menu. Either of the commands opens the SQL Editor.

Can we alter stored procedure?

Modifying or ALTERing a stored procedure is pretty simple. Once a stored procedure has been created it is stored within one of the system tables in the database that is was created in. … The command to modify an existing stored procedure is ALTER PROCEDURE or ALTER PROC.

How do I check if a stored procedure exists?

Check for stored procedure name using EXISTS condition in T-SQL.

  1. IF EXISTS (SELECT * FROM sys.objects WHERE type = ‘P’ AND name = ‘Sp_Exists’)
  2. DROP PROCEDURE Sp_Exists.
  3. go.
  4. create PROCEDURE [dbo].[Sp_Exists]
  5. @EnrollmentID INT.
  6. AS.
  7. BEGIN.
  8. select * from TblExists.

What is difference between stored procedure and function?

The function must return a value but in Stored Procedure it is optional. Even a procedure can return zero or n values. Functions can have only input parameters for it whereas Procedures can have input or output parameters. Functions can be called from Procedure whereas Procedures cannot be called from a Function.

What is trigger in MySQL?

A trigger is a named database object that is associated with a table, and that activates when a particular event occurs for the table. Some uses for triggers are to perform checks of values to be inserted into a table or to perform calculations on values involved in an update.

What are procedures in MySQL?

A procedure is a subroutine (like a subprogram) in a regular scripting language, stored in a database. In the case of MySQL, procedures are written in MySQL and stored in the MySQL database/server. A MySQL procedure has a name, a parameter list, and SQL statement(s).

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How do you alter a procedure?

Using SQL Server Management Studio

  1. In Object Explorer, connect to an instance of Database Engine and then expand that instance.
  2. Expand Databases, expand the database in which the procedure belongs, and then expand Programmability.
  3. Expand Stored Procedures, right-click the procedure to modify, and then click Modify.

How do I view a stored procedure in MySQL?

To view the list of the stored procedure, you can query the information_schema. routines table. It contains the list of the stored procedure and stored functions created on the database. To view the list of the stored procedure created in a sakila database, run the following query.

What is stored procedure in MySQL?

A procedure (often called a stored procedure) is a collection of pre-compiled SQL statements stored inside the database. It is a subroutine or a subprogram in the regular computing language. A procedure always contains a name, parameter lists, and SQL statements.

How recompile MySQL procedure?

MySQL will not compile all stored procedures at once. They will be executed on demand like queries as per requirement and when you call them. With a stored procedure, however, the database compiles the query plan once and reuses the compiled process. This pre-compilation can yield a significant performance advantage.

Which menu will you click to edit an already existing procedure?

To edit an existing stored program in this way, you simply locate and select the stored program in the MySQL Query Browser’s Schemata browser, right-click, and select Edit Procedure (or Edit Function) from the context menu.

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