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Display records from MySQL stored Procedure with IF…THEN…END IF statements
Let us first create a table −
mysql> create table DemoTable643 (ClientId int); Query OK, 0 rows affected (0.86 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable643 values(1000); Query OK, 1 row affected (0.19 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable643;
This will produce the following output −
+----------+ | ClientId | +----------+ | 1000 | +----------+ 1 row in set (0.00 sec)
Here is the query to MySQL stored procedure with IF THEN END IF −
mysql> DELIMITER // mysql> CREATE PROCEDURE IF_DEMO(argument int) BEGIN DECLARE firstArgument int; DECLARE secondArgument int; set firstArgument=0; set secondArgument=1; IF firstArgument=argument THEN insert into DemoTable643 values(2000); END IF; IF secondArgument=argument THEN select *from DemoTable643; END IF; END // Query OK, 0 rows affected (0.12 sec) mysql> DELIMITER ;
Call the stored procedure using call command −
mysql> call IF_DEMO(0); Query OK, 1 row affected (0.17 sec)
Here is the query to display all the records from the stored procedure −
mysql> call IF_DEMO(1);
This will produce the following output −
+----------+ | ClientId | +----------+ | 1000 | | 2000 | +----------+ 2 rows in set (0.00 sec) Query OK, 0 rows affected (0.03 sec)
Updated on: 23-Aug-2019
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