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TheCREATE TABLEcommand creates a new table in the database. The following SQL creates a table called "Persons" that contains five columns: PersonID, LastName, FirstName, Address, and City: Example CREATETABLEPersons ( PersonID int, LastName varchar(255), ...
This program first checks to see if the text file "temp.txt" exists on your Android device. If the "temp.txt" file does not exist, it creates a new blank text file named "temp.txt". Then it reads the contents of the "temp.txt" file, and allows the user to edit it. Finally, i...
Tip: Make sure you have admin privilege before creating any database. Once a database is created, you can check it in the list of databases with the following SQL command: SHOW DATABASES;Exercise? What is the purpose of the SQL CREATE DATABASE statement? To create a new table in an ...
CREATE TABLE command creates a new table in the database. The following SQL creates a table called "Persons" that contains five columns: PersonID, LastName, FirstName, Address, and City:ExampleGet your own SQL Server CREATE TABLE Persons ( PersonID int, LastName varchar(255), FirstName ...
if($conn->query($sql) === TRUE) { echo"Table MyGuests created successfully"; }else{ echo"Error creating table: ". $conn->error; } $conn->close(); ?> Example (MySQLi Procedural) <?php $servername ="localhost"; $username ="username"; ...
SQL CREATE TABLE Example The following example creates a table called "Persons" that contains five columns: PersonID, LastName, FirstName, Address, and City: ExampleGet your own SQL Server CREATETABLEPersons ( PersonID int, LastName varchar(255), ...
A view is a virtual table based on the result set of an SQL statement.The following SQL creates a view that selects all customers from Brazil:ExampleGet your own SQL Server CREATE VIEW [Brazil Customers] AS SELECT CustomerName, ContactName FROM Customers WHERE Country = "Brazil"; Query...
❮Previous❮ SQL KeywordsReferenceNext❯ CREATE OR REPLACE VIEW TheCREATE OR REPLACE VIEWcommand updates a view. The following SQL adds the "City" column to the "Brazil Customers" view: ExampleGet your own SQL Server CREATEORREPLACEVIEW[Brazil Customers]AS ...
The DROP INDEX statement is used to delete an index in a table.MS Access:DROP INDEX index_name ON table_name; SQL Server:DROP INDEX table_name.index_name; DB2/Oracle:DROP INDEX index_name; MySQL:ALTER TABLE table_nameDROP INDEX index_name; ...