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SQL Crash Course

SQL Crash Course. SQL stands for Structured Query Language Backend of all modern websites You can think about SQL like a large Excel table Only difference is Rows are called Records. SELECT username, FavoriteFood FROM users WHERE IsAdmin =0; .

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SQL Crash Course

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  1. SQL Crash Course • SQL stands for Structured Query Language • Backend of all modern websites • You can think about SQL like a large Excel table • Only difference is Rows are called Records

  2. SELECT username, FavoriteFoodFROM users WHERE IsAdmin=0;

  3. SELECT username, FavoriteFoodFROM users WHEREIsAdmin=0; ACTION ITEMS LOCATION FILTER SELECT * FROM users WHERE username=$var1 AND password=$var2 Select everything from the users table where username is equal to the inputted username and password is also equal to the inputted password.

  4. SQL Injections SELECT * FROM users WHERE username=$var1 AND password=$var2 $var1 = rburden $var2 = 123456 SELECT * FROM users WHERE username=“rburden” AND password=“123456”; $var1 = rburden $var2 = 123456” OR 1==1; SELECT * FROM users WHERE username=“rburden” AND password=“123456” OR 1 == 1;

  5. XSS (Cross Site Scripting) <iframesrc=“http://evilhackerwebsite.com”style="border: 0; width: 100%; height: 100%"> Your browser doesn't support iFrames. </iframe>

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