QSpiders - Interacting with My SQL Database
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This document provides instructions for interacting with a MySQL database using the MySQL command line client. It explains how to open the client, select a database, create tables, insert and retrieve data, update records, and delete records. The key steps are to open the MySQL client, select a database, connect to it, then use SQL statements like CREATE, INSERT, SELECT, UPDATE, and DELETE to manage tables and data within the selected database.
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QSpiders - Interacting with My SQL Database
- 1. Interacting with My-SQL Database By, Vikas S Kumar Software Engineer
- 2. • Go to start and type mysql client • Select MySQL Command Line Client • Press enter • The client window opens Select mysql client
- 3. Give the password (Which you had given while installing)
- 4. • Data base has to be created before creating table • All your tables will be created inside the database • You can create as many number of database as you want • Command • create database <data-Base-Name>; • Eg : create database vikas; Create data base
- 5. • To execute any queries first we need to connect to database • After connecting to database we can execute any queries • To create table • Insert data • Delete data • Update data • Connect to database • syntax: connect <data-base-name>; Connect to database
- 6. • Create table Syntax : create table <table-name> (column_1_name datatype (size),column_2_name datatype (size),….);
- 7. • Insert data • Syntax : insert into <table-name> values(‘value1’,’value1’,……) • If you are inserting the string or alpha value the value should be encoded inside the single quotes ‘ ‘ Eg: ‘vikas’ • If the value is numeric it can be written with out single quotes.
- 8. • To display the data • Select * from <table-name>; • To display only name • To display only name and rol number • To display all columns
- 9. • Update • Syntax : update <table-name> set <column-name>=NewValue where <column- name>=value; • After update
- 10. • Delete • Syntax : delete from <table-name> where <column- name>=value; • After delete