SQL Basic
SQL HOMESQL Intro
SQL Syntax
SQL Select
SQL Distinct
SQL Where
SQL And & Or
SQL Order By
SQL Insert
SQL Update
SQL Delete
SQL Demo
SQL Try ItSQL Advanced
SQL TopSQL Like
SQL Wildcards
SQL In
SQL Between
SQL Alias
SQL Joins
SQL Inner Join
SQL Left Join
SQL Right Join
SQL Full Join
SQL Union
SQL Select Into
SQL Create DB
SQL Create Table
SQL Constraints
SQL Not Null
SQL Unique
SQL Primary Key
SQL Foreign Key
SQL Check
SQL Default
SQL Create Index
SQL Drop
SQL Alter
SQL Increment
SQL Views
SQL Dates
SQL Nulls
SQL isnull()
SQL Data Types
SQL Functions
SQL FunctionsSQL avg()
SQL count()
SQL first()
SQL last()
SQL max()
SQL min()
SQL sum()
SQL Group By
SQL Having
SQL ucase()
SQL lcase()
SQL mid()
SQL len()
SQL round()
SQL now()
SQL format()
SQL Quick Ref
SQL Hosting
SQL Summary
SQL Quiz
SQL QuizSQL DROP INDEX, DROP TABLE, and DROP DATABASE
| « Previous | Next Chapter » |
Indexes, tables, and databases can easily be deleted/removed with the DROP statement.
The DROP INDEX Statement
The DROP INDEX statement is used to delete an index in a table.
DROP INDEX Syntax for MS Access:
| DROP INDEX index_name ON table_name |
DROP INDEX Syntax for MS SQL Server:
| DROP INDEX table_name.index_name |
DROP INDEX Syntax for DB2/Oracle:
| DROP INDEX index_name |
DROP INDEX Syntax for MySQL:
| ALTER TABLE table_name DROP INDEX index_name |
The DROP TABLE Statement
The DROP TABLE statement is used to delete a table.
| DROP TABLE table_name |
The DROP DATABASE Statement
The DROP DATABASE statement is used to delete a database.
| DROP DATABASE database_name |
The TRUNCATE TABLE Statement
What if we only want to delete the data inside the table, and not the table itself?
Then, use the TRUNCATE TABLE statement:
| TRUNCATE TABLE table_name |
| « Previous | Next Chapter » |