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DROP DATABASE DROP DATABASE database_name DROP INDEX DROP INDEX table_name.index_name (SQL Server)DROP INDEX index_name ON table_name (MS Access)DROP INDEX index_name (DB2/Oracle)ALTER TABLE table_nameDROP INDEX index_name (MySQL) DROP TABLE DROP TABLE table_name EXISTS IF EXISTS (SELECT...
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Language aside what is involved in creating a web crawler (like the GoogleBot) that will index a site, follow links, etc.Skemcin Members 2.7k Location:West Suburbs of Chicago, IL Languages:(X)HTML, CSS, JavaScript, XML, XSL, ColdFusion, CDML, WML, WAP, SQL, MySQL, Oracle Posted...
The following SQL creates an index named "idx_lastname" on the "LastName" column in the "Persons" table: CREATEINDEXidx_lastname ONPersons (LastName); If you want to create an index on a combination of columns, you can list the column names within the parentheses, separated by commas:...
Exercise: MySQL CREATE INDEXWhat is the purpose of the SQL CREATE INDEX statement? To create a backup of a table To retrieve data more quickly by creating indexes To ensure data integrity in a table To delete an existing index in a table...
CREATE UNIQUE INDEXThe CREATE UNIQUE INDEX command creates a unique index on a table (no duplicate values allowed)Indexes are used to retrieve data from the database very fast. The users cannot see the indexes, they are just used to speed up searches/queries.The following SQL creates an ...
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.