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MySQL Stored Procedure to update records with certain condition?
For this, you can use the UPDATE command along with the WHERE clause in a PROCEDURE. Let us first create a table −
mysql> create table DemoTable -> ( -> Id int, -> FirstName varchar(20), -> LastName varchar(20) -> ); Query OK, 0 rows affected (0.56 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values(101,'David','Brown'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values(102,'Chris','Brown'); Query OK, 1 row affected (0.08 sec) mysql> insert into DemoTable values(103,'John','Doe'); Query OK, 1 row affected (0.07 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+------+-----------+----------+ | Id | FirstName | LastName | +------+-----------+----------+ | 101 | David | Brown | | 102 | Chris | Brown | | 103 | John | Doe | +------+-----------+----------+ 3 rows in set (0.00 sec)
Here is the query to create a stored procedure−
mysql> delimiter // mysql> create procedure update_sp(fName varchar(20),lName varchar(20)) -> begin -> update DemoTable -> set FirstName=fName, -> LastName=lName -> where Id=101; -> end -> // Query OK, 0 rows affected (0.12 sec) mysql> delimiter ;
Now you can call a stored procedure using call command −
mysql> call update_sp('Adam','Smith');
Query OK, 1 row affected, 2 warnings (0.08 sec)Let us check the table records once again −
mysql> select *from DemoTable;
This will produce the following output −
+------+-----------+----------+ | Id | FirstName | LastName | +------+-----------+----------+ | 101 | Adam | Smith | | 102 | Chris | Brown | | 103 | John | Doe | +------+-----------+----------+ 3 rows in set (0.00 sec)
Updated on: 17-Dec-2019
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