'LabelNo' int(11) NOT NULL DEFAULT '0' COMMENT 'Generated Label No',Īnd add some of the values using INSERT statement like the following: INSERT INTO 'last_tran_date' ('itemCode', 'LabelNo', 'LastTranDate') VALUES('87','8529816','') Ģ. 'itemCode' int(11) NOT NULL COMMENT 'ItemCode From Item Master',
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Still, before that, I will create a sample table named last_tran_date that will store the date of the last transaction on the particular object along with its item code and label number using the following query: CREATE TABLE 'last_tran_date' ( Let us create one simple stored procedure. Example to Implement MySQL Stored Procedureīelow are some examples of MySQL Stored Procedures:ġ. You can also include calls to other stored procedures within this section of the stored procedure. Execution part of the stored procedure: We can write our program or code in this section of the stored procedure that can contain conditional, looping statements, initializing and assigning the value of variables, and preparing and executing the database queries. Declaration part of the stored procedure: We can declare the local variables if we want any in this part of the stored procedure.ĥ. BEGIN and END: BEGIN keyword marks the beginning of the stored procedure, while END marks the completion of the stored procedure in MYSQL.Ĥ. IN OUT: These parameters are assigned the values while calling the stored procedure, and the value can be modified or overwritten inside the stored procedure and referenced and used by the stored procedure.ģ.OUT:You can assign values to these parameters and override them in the stored procedure, but you cannot reference them directly.They cannot be modified or overwritten within the stored procedure. IN: You assign values to these parameters when calling the stored procedure, and the stored procedure references and utilizes these values.These parameters can belong to either of the three types: A stored procedure can contain none, one, or more than one parameter. NameOfParameter: We can pass the optional parameters to the stored procedures that must be declared while creating it in the () brackets. name_of_SP: The stored procedure’s name needs to be created in MySQL.Ģ. In this article, we will learn about the stored procedures in MySQL, how we can create them call them for execution, and drop the stored procedures.ĬREATE PROCEDURE name_of_SP )]ġ. Note that stored procedures don’t return any values. You can call these stored procedures as many times as desired. We can even call other stored procedures from specific stored procedures. The stored procedure can allow us to work on multiple databases and execute queries involving tables of one or more than one database. Most of the time, the MySQL stored procedure is used when your application involves specific modules having too many database operations and alterations of the tables, and all this needs o to be performed efficiently within a short timespan. These queries can be executed on a conditional basis and looped around using the FOR loop statement. The stored procedure can be called the subroutine that needs to be called, accepts parameters, and consists of a sequence of executed database queries.
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