W3school sql

This article is tagged with: W3school sql and mysql

w3school sql

class ClassName {
  constructor() { ... }
}

odp mysql 3wschools

<?php
$servername = "localhost";
$username = "username";
$password = "password";
try {
  $conn = new PDO("mysql:host=$servername;dbname=myDB", $username, $password);
  // set the PDO error mode to exception
  $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
  echo "Connected successfully";

} catch(PDOException $e) {
  echo "Connection failed: " . $e->getMessage();
}
?>

php mysql

<?php
$servername = "localhost";
$username = "username";
$password = "password";
// Create connection
$conn = new mysqli($servername, $username, $password);
// Check connection
if ($conn->connect_error) {
  die("Connection failed: " . $conn->connect_error);
}

// Create database
$sql = "CREATE DATABASE myDB";
if ($conn->query($sql) === TRUE) {
  echo "Database created successfully";
} else {
  echo "Error creating database: " . $conn->error;
}
$conn->close();
?>

php database

<?php
// Provide login information
$servername = "localhost";
$username = "username";
$password = "password";
// Create connection
$conn = new mysqli($servername, $username, $password);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
} else {
echo "Connected successfully";
}
?>

SQL

CREATE TABLE friends (
id INTEGER,
name TEXT,
birthday DATE
);
INSERT INTO friends (id, name, birthday)
VALUES (1, 'Jane Doe', '1990-05-30');
INSERT INTO friends(id , name , birthday)
VALUES(2 , 'APOORV' , '2000-2-2');
UPDATE friends
SET name = 'Jane Srivastava'
WHERE id = 1;
ALTER TABLE friends
ADD COLUMN email TEXT;
UPDATE friends
SET email = '[email protected]'
where id = 1;
UPDATE friends
SET email = '[email protected]'
where id = 2;
DELETE FROM friends
WHERE id = 1;
SELECT *
FROM friends;

css in sql query

SELECT 'test1' AS [@class]
, ( SELECT 'test2' as [@class]
, (SELECT 'Name' FOR XML PATH(''))
FOR XML PATH('td'), type)
,(SELECT 'test3' as [@class]
, (SELECT 'Value' FOR XML PATH(''))
FOR XML PATH('td'), type)
FOR XML PATH('tr'), type

This article is tagged with: W3school sql and mysql