How do you loop a stored procedure?

How do you loop a stored procedure?

The LOOP statement allows you to execute one or more statements repeatedly. The LOOP can have optional labels at the beginning and end of the block. The LOOP executes the statement_list repeatedly. The statement_list may have one or more statements, each terminated by a semicolon (;) statement delimiter.

How do you write a for loop in SQL?

I am detailing answer on ways to achieve different types of loops in SQL server.

1. FOR Loop. DECLARE @cnt INT = 0; WHILE @cnt < 10 BEGIN PRINT ‘Inside FOR LOOP’; SET @cnt = @cnt + 1; END; PRINT ‘Done FOR LOOP’;
2. DO.. WHILE Loop.
3. REPEAT..UNTIL Loop.

How do you write a loop in MySQL query?

The MySQL LOOP statement could be used to run a block of code or set of statements, again and again, depends on the condition.

1. Syntax : [labelname:] LOOP statements END LOOP [labelname]
2. Parameters –
3. Example-1 :
4. Output – 0, 1, 2, 3, 4, 5.

How does for loop work in SQL?

PL/SQL – FOR LOOP Statement

1. The initial step is executed first, and only once.
2. Next, the condition, i.e., initial_value ..
3. After the body of the for loop executes, the value of the counter variable is increased or decreased.
4. The condition is now evaluated again.

What are 3 types of loops in SQL?

Explain Different Types of Loops in PL/SQL

• The simple or infinite loop.
• The FOR loop.
• The WHILE loop.

Can we use loops in SQL?

SQL WHILE loop provides us with the advantage to execute the SQL statement(s) repeatedly until the specified condition result turn out to be false. Otherwise, the code flow will exit the loop. If any SQL statement exists outside the loop, it will be executed.

How do I declare in MySQL?

Declaring variables

1. First, specify the name of the variable after the DECLARE keyword. The variable name must follow the naming rules of MySQL table column names.
2. Second, specify the data type and length of the variable.
3. Third, assign a variable a default value using the DEFAULT option.

What is procedure 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).

Can a loop be run within a stored procedure?

So, it looks like you can run an explicit loop only within a stored procedure, function or trigger. Depending on what you do in your SQL statement, it may be acceptable to use a table (or view) of numbers ( Creating a “Numbers Table” in mysql, MYSQL: Sequential Number Table ).

How to insert multiple rows using stored procedure in SQL?

Let us say for each table you have a minimum of 4 underlying procedures, these are Insert, Update, Delete, and Select statements etc. If we take a database of 400 tables then there would be 1600 procedures in minimum. We assume here that there are no duplicate values stored in database tables.

How to fix MySQL-loop n times without using stored procedure?

1064 – You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘DECLARE count INT DEFAULT 0; WHILE count < 10 DO at line’ 2 I have looked through the Internet for a solution with no luck.

How to loop over query results in TSQL?

DECLARE @id INT DECLARE @name NVARCHAR (100) DECLARE @getid CURSOR SET @getid = CURSOR FOR SELECT table.id, table.name FROM table WHILE 1=1 BEGIN FETCH NEXT FROM @getid INTO @id, @name IF @@FETCH_STATUS < 0 BREAK EXEC stored_proc @varName=@id, @otherVarName=’test’, @varForName=@name END CLOSE @getid DEALLOCATE @getid