Bibashsql
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This document provides instructions for various SQL commands used to create and manage databases and tables, insert, select, update, and delete data. It includes commands to create databases and tables, insert data into tables, select data using where clauses, update and delete rows, add and remove columns, and order results. The goal is to teach students how to structure and query a database through hands-on SQL commands and examples.
![DBMS LAB ASSIGNMENT
4 010BScCSIT10
insert into person(fname,lname,address,age,phone)
values('Saswot','Nepal','Dillibazar',15,9849209845);
insert into person(fname,lname,address,age,phone)
values('Ashim','Adhikari','Chabahil',24,9849284671);
insert into person(fname,lname,address,age,phone)
values('Manoj','Paudel','Gyaneshwor',24,984894152);
insert into person(fname,lname,address,age,phone)
values('Raj','Rana','Balwataar',22,9841671560);
SELECT statement
Syntax
select column_name(s)
from table_name
select *from table_name [ * selects all columns ]
E.g. select fname,lname from person;](https://image.slidesharecdn.com/bibashsql-130421211922-phpapp01/85/Bibashsql-4-320.jpg)
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Bibashsql
- 1. DBMS LAB ASSIGNMENT 1 010BScCSIT10 Create database Syntax: create database database_name; E.g. create database bibash; Delete database Syntax: drop database database_name; E.g. drop database 010BScCSIT043; Create table Syntax: create table table_name; E.g. create table person ( person_id int, fname varchar(100), lname varchar(100), address varchar(100), age int, phone bigint ); Delete table Syntax: drop table table_name; E.g. drop table person;
- 2. DBMS LAB ASSIGNMENT 2 010BScCSIT10 Insert data in table Syntax insert into table table_name (field1, field2… fieldN) values (value1, value2 … valueN); If field2 value is to be null, then insert into table_name (filed1,filed3,field4 … fieldN) values (value1,value3,value4 … valueN); E.g. insert into person(person_id,fname,lname,address,age) values(1,'Rajeev','Manandhar','Naxal',24); insert into person(person_id,fname,lname,address,phone) values(2,'Avishek','Satyal','Gairidhara',9841121326); insert into person(person_id,fname,lname,address,age,phone) values(3,'Avaya','Satyal','Gairidhara',25,9841689411); insert into person(person_id,fname,lname,address,age,phone) values(4,'Ayush','Ghimire','Old Baneshwor',20,9849611554); insert into person(person_id,fname,lname,address,age,phone) values(5,'Prajwol','Sharma','Hattigauda',20,9849102030); insert into person(person_id,fname,lname,address,age,phone) values(6,'Satyam','Nepal','Dillibazar',22,9841571219); insert into person(person_id,fname,lname,address,age,phone) values(7,'Saswot','Nepal','Dillibazar',15,9849209845); insert into person(person_id,fname,lname,address,age,phone) values(8,'Ashim','Adhikari','Chabahil',24,9849284671); insert into person(person_id,fname,lname,address,age,phone) values(9,'Manoj','Paudel','Gyaneshwor',24,984894152); insert into person(person_id,fname,lname,address,age,phone) values(10,'Raj','Rana','Balwataar',22,9841671560);
- 3. DBMS LAB ASSIGNMENT 3 010BScCSIT10 Creating table with auto_increment Syntax create table table_name; E.g. create table person ( person_id int not null auto_increment primary key, fname varchar(100), lname varchar(100), address varchar(100), age int, phone bigint ); insert into person(fname,lname,address,age) values('Rajeev','Manandhar','Naxal',24); insert into person(fname,lname,address,phone) values('Avishek','Satyal','Gairidhara',9841121326); insert into person(fname,lname,address,age,phone) values('Avaya','Satyal','Gairidhara',25,9841689411); insert into person(fname,lname,address,age,phone) values('Ayush','Ghimire','Old Baneshwor',20,9849611554); insert into person(fname,lname,address,age,phone) values('Prajwol','Sharma','Hattigauda',20,9849102030); insert into person(fname,lname,address,age,phone) values('Satyam','Nepal','Dillibazar',22,9841571219);
- 4. DBMS LAB ASSIGNMENT 4 010BScCSIT10 insert into person(fname,lname,address,age,phone) values('Saswot','Nepal','Dillibazar',15,9849209845); insert into person(fname,lname,address,age,phone) values('Ashim','Adhikari','Chabahil',24,9849284671); insert into person(fname,lname,address,age,phone) values('Manoj','Paudel','Gyaneshwor',24,984894152); insert into person(fname,lname,address,age,phone) values('Raj','Rana','Balwataar',22,9841671560); SELECT statement Syntax select column_name(s) from table_name select *from table_name [ * selects all columns ] E.g. select fname,lname from person;
- 5. DBMS LAB ASSIGNMENT 5 010BScCSIT10 Where clause Syntax: select *from table_name where field_name=’value’ E.g. select *from person where address=’Gairidhara’; select *from person where lname= 'Nepal' AND (fname='Satyam' OR fname='Saswot'); Update Statement Syntax Update table_name SET column1=value, column2=value, …… WHERE some_column = some_value E.g. Update person SET address=’Samakhusi’ WHERE fname=’Ashim’ AND lname=’Adhikari’
- 6. DBMS LAB ASSIGNMENT 6 010BScCSIT10 Delete from table Syntax Delete from table_name Where some_column=some_value E.g. delete from person where fname='Raj' AND lname='Rana' Selecting Distinct values from a set of data’s Syntax: select DISTINCT column_name from table_name; E.g. select distinct address from person;
- 7. DBMS LAB ASSIGNMENT 7 010BScCSIT10 Ordering the table in descending or ascending order Syntax: select * from table_name order by column_name; (sorts attibutes in ascending order, by default) select * from table_name order by column_name DESC; (sorts address in descending order) E.g. select * from person order by address; select * from person order by address DESC;
- 8. DBMS LAB ASSIGNMENT 8 010BScCSIT10 Alter table to add and delete a column Syntax: Alter table table_name(new_attribute); E.g.alter table person add (citizenship_id int); (adds new column citizenship_id of type int) Combining conditions and Boolean expression Syntax:select column1_name,column2_name… from table_name where condition AND/OR condition E.g. select fname,lname,phone from person where person_id<6 AND age>19 ; (Selects fname, lname and phone of those whose person_id is less than 6 and age is greater than 19)