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Query Parameter

 

We will learn how to create, select, insert, update, and delete statements using stored procedures in SQL.

 

CREATING a Table:

CREATE TABLE worker
(
   id         INTEGER NOT NULL PRIMARY KEY,
   first_name VARCHAR(15),
   last_name  VARCHAR(15),
   salary     DECIMAL(10, 3),
)

 


INSERTING into a Table:

Syntax for inserting data into a table is:

INSERT INTO table_name (column1, column2, column3, ...)
VALUES (value1, value2, value3, ...);

Example:

“INSERT INTO worker VALUES (2, 'Rajesh', 'Kumar', 6000,)”;

 


SELECT from a Table:

Syntax for selecting data into a table is:

SELECT * FROM table_name WHERE CONDITION;

Example:

“SELECT * FROM   worker where `id` = 1”;


UPDATING into a Table:

Syntax for updating data into a table.

UPDATE table SET `column1` = `Value1` = `column2` = `value2`, ... WHERE CONDITION;

Example:

UPDATE workers SET `first_name` = ”Rajesh”, `last_name` = “Kumar” WHERE `id`  = 1;

 

DELETING from a Table:

Syntax for deleting data from a table.

DELETE FROM table_name WHERE condition;

Example:

DELETE FROM WORKERS WHERE `id` = 1;

 

Hence, it is possible to create a stored procedure in SQL that can handle select, add (insert), update, and delete operations on a database table.

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