Skip to main content

SQL Drop

SQL Drop Command

Drop command is used to remove the table from the database.

Syntax

 
drop table <table_name>

Example

 
drop table Employee
Note: Drop command do not drop table permanently from database. Once you drop the table then that table gone into recycle bin.

Permanently drop table from database

To drop table from recycle bin you can use purge table <table_name> command

Syntax

 
pruge table <table_name>

Example

 
pruge table Employee

Permanently drop table from database

To drop table permanently from database you can use following command

Syntax

 
drop table <table_name> pruge

Example

 
drop table Employee pruge

Comments

Popular posts from this blog

Introduction of SQL

Introduction of SQL SQL (Structure Query Language)  was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce in the early 1970s. This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasi-relational database management system. Features of SQL SQL is not a case sensitive language. Every commands in SQL should ends with semicolon(;). SQL can also called as sequel (SEQUEL). SQL Sub Language SQL is mainly divided into four sub language Data Definition Language(DDL) Data Manipulation Language(DML) Transaction Control Language(TCL) Data Control Language(DCL) Only for remember You can remember all these command like below; DDL Commands "dr. cat" d-Drop, r-Rename, c-Create, a-Alter, t-Truncate. DML commands "sudi". s-Select, u-Update, d-Delete, i-Insert.

Text Formatting

• Text formatting tags modify the text between the opening tag and the closing tag – Ex. <b>Hello</b> makes “Hello” bold

css introduction

What is CSS? •Stands for Cascading Style Sheet •CSS allows you to style HTML elements, or define how they are displayed. •Styles are normally stored in Style Sheets •External Style Sheetscan save you a lot of work •External Style Sheets are stored in CSS files •Multiple style definitions will cascadeinto one •Examples: –Changing the color of text –Specifying the size and position of a div What is CSS? (cont.) •CSS is an alternative to the “style” attribute. – <div style=“height:500px; width:200px”></div> •Advantages: –Can control the style of many different elements with a single command. –Separation of function: HTML can focus on content while CSS handles styling. CSS (Cascading Style Sheet) •Simple mechanism for adding style to web page •Code be embedded into the HTML file •HTML tag: <style type=“text/css”>CODE</style> •Also be in a separate file FILENAME.css •HTML tag: <link rel=“stylesheet” href=“scs.css” type=“text/css”> •St...